/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/parallel/ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:22:41,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:22:41,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:22:41,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:22:41,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:22:41,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:22:41,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:22:41,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:22:42,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:22:42,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:22:42,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:22:42,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:22:42,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:22:42,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:22:42,009 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:22:42,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:22:42,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:22:42,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:22:42,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:22:42,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:22:42,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:22:42,012 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:22:42,012 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:22:42,013 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:22:42,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:22:42,013 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:22:42,013 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:22:42,014 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:22:42,014 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:22:42,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:22:42,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:22:42,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:22:42,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:22:42,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:22:42,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:22:42,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:22:42,016 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:22:42,016 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:22:42,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:22:42,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:22:42,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:22:42,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:22:42,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:22:42,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:22:42,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:22:42,486 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:22:42,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/ticket-4.wvr.c [2021-10-06 21:22:42,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/babae9b85/d511bbbda5964031bae31ab46087e652/FLAG6ca61be37 [2021-10-06 21:22:43,220 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:22:43,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-4.wvr.c [2021-10-06 21:22:43,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/babae9b85/d511bbbda5964031bae31ab46087e652/FLAG6ca61be37 [2021-10-06 21:22:43,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/babae9b85/d511bbbda5964031bae31ab46087e652 [2021-10-06 21:22:43,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:22:43,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:22:43,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:22:43,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:22:43,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:22:43,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:22:43" (1/1) ... [2021-10-06 21:22:43,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0978cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:43, skipping insertion in model container [2021-10-06 21:22:43,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:22:43" (1/1) ... [2021-10-06 21:22:43,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:22:43,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:22:43,935 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/parallel/ticket-4.wvr.c[2782,2795] [2021-10-06 21:22:43,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:22:43,973 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:22:44,032 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/parallel/ticket-4.wvr.c[2782,2795] [2021-10-06 21:22:44,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:22:44,061 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:22:44,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44 WrapperNode [2021-10-06 21:22:44,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:22:44,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:22:44,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:22:44,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:22:44,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:22:44,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:22:44,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:22:44,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:22:44,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:22:44,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:22:44,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:22:44,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:22:44,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:22:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:22:44,274 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) [2021-10-06 21:22:44,289 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 [2021-10-06 21:22:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:22:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:22:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:22:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:22:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:22:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:22:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:22:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 21:22:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 21:22:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:22:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:22:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:22:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:22:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:22:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:22:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:22:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:22:44,340 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:22:45,111 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:22:45,111 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-06 21:22:45,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:22:45 BoogieIcfgContainer [2021-10-06 21:22:45,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:22:45,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:22:45,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:22:45,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:22:45,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:22:43" (1/3) ... [2021-10-06 21:22:45,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8a7383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:22:45, skipping insertion in model container [2021-10-06 21:22:45,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (2/3) ... [2021-10-06 21:22:45,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8a7383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:22:45, skipping insertion in model container [2021-10-06 21:22:45,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:22:45" (3/3) ... [2021-10-06 21:22:45,124 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-4.wvr.c [2021-10-06 21:22:45,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:22:45,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-06 21:22:45,132 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:22:45,174 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,174 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,175 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,175 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,175 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,176 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,176 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,176 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,176 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,176 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,177 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,177 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,177 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,177 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,178 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,178 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,178 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,178 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,179 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,179 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,179 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,179 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,181 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,181 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,181 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,183 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,183 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,184 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,186 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,186 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,186 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,186 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,187 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,187 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,187 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,189 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,189 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,189 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,189 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,190 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,190 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,190 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,190 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,191 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,191 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,191 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,191 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,194 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,194 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,194 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,195 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,195 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,195 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,195 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,196 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,196 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,196 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,196 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,196 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,197 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,197 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,197 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,198 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,198 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,198 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,198 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,198 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,199 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,199 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,199 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,199 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,203 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,203 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,203 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,204 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,204 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,204 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,207 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,210 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,214 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,220 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,221 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,230 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-06 21:22:45,292 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:22:45,307 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 [2021-10-06 21:22:45,307 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-06 21:22:45,340 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:22:45,357 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 172 transitions, 376 flow [2021-10-06 21:22:45,365 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 172 transitions, 376 flow [2021-10-06 21:22:45,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 172 transitions, 376 flow [2021-10-06 21:22:45,485 INFO L129 PetriNetUnfolder]: 6/168 cut-off events. [2021-10-06 21:22:45,486 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-06 21:22:45,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 168 events. 6/168 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2021-10-06 21:22:45,502 INFO L116 LiptonReduction]: Number of co-enabled transitions 4712 [2021-10-06 21:23:02,610 INFO L131 LiptonReduction]: Checked pairs total: 14697 [2021-10-06 21:23:02,611 INFO L133 LiptonReduction]: Total number of compositions: 170 [2021-10-06 21:23:02,630 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 63 transitions, 158 flow [2021-10-06 21:23:03,060 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8291 states, 8273 states have (on average 4.341230508884323) internal successors, (35915), 8290 states have internal predecessors, (35915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 8291 states, 8273 states have (on average 4.341230508884323) internal successors, (35915), 8290 states have internal predecessors, (35915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:23:03,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:03,122 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:23:03,123 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:03,132 INFO L82 PathProgramCache]: Analyzing trace with hash 649, now seen corresponding path program 1 times [2021-10-06 21:23:03,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:03,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306548625] [2021-10-06 21:23:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:03,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:03,155 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) [2021-10-06 21:23:03,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:23:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:03,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:23:03,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:03,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:03,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:03,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306548625] [2021-10-06 21:23:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306548625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:03,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:03,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:23:03,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002311639] [2021-10-06 21:23:03,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:23:03,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:03,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:23:03,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:23:03,295 INFO L87 Difference]: Start difference. First operand has 8291 states, 8273 states have (on average 4.341230508884323) internal successors, (35915), 8290 states have internal predecessors, (35915), 0 states have call successors, (0), 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) [2021-10-06 21:23:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:03,600 INFO L93 Difference]: Finished difference Result 8288 states and 32352 transitions. [2021-10-06 21:23:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:23:03,601 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 [2021-10-06 21:23:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:03,826 INFO L225 Difference]: With dead ends: 8288 [2021-10-06 21:23:03,827 INFO L226 Difference]: Without dead ends: 8288 [2021-10-06 21:23:03,828 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 [2021-10-06 21:23:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8288 states. [2021-10-06 21:23:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8288 to 8288. [2021-10-06 21:23:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8288 states, 8273 states have (on average 3.9105523993714493) internal successors, (32352), 8287 states have internal predecessors, (32352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8288 states to 8288 states and 32352 transitions. [2021-10-06 21:23:04,477 INFO L78 Accepts]: Start accepts. Automaton has 8288 states and 32352 transitions. Word has length 1 [2021-10-06 21:23:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:04,478 INFO L470 AbstractCegarLoop]: Abstraction has 8288 states and 32352 transitions. [2021-10-06 21:23:04,479 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) [2021-10-06 21:23:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 8288 states and 32352 transitions. [2021-10-06 21:23:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:23:04,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:04,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:23:04,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:23:04,699 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 [2021-10-06 21:23:04,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash 639843, now seen corresponding path program 1 times [2021-10-06 21:23:04,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:04,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175024506] [2021-10-06 21:23:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:04,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:04,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:04,705 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) [2021-10-06 21:23:04,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:23:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:04,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:23:04,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:05,105 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 21:23:05,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-06 21:23:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:05,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:05,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:05,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175024506] [2021-10-06 21:23:05,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175024506] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:05,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:05,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:05,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040463419] [2021-10-06 21:23:05,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:05,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:05,405 INFO L87 Difference]: Start difference. First operand 8288 states and 32352 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) [2021-10-06 21:23:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:05,683 INFO L93 Difference]: Finished difference Result 8065 states and 31583 transitions. [2021-10-06 21:23:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:05,686 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 [2021-10-06 21:23:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:05,777 INFO L225 Difference]: With dead ends: 8065 [2021-10-06 21:23:05,777 INFO L226 Difference]: Without dead ends: 8065 [2021-10-06 21:23:05,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8065 states. [2021-10-06 21:23:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8065 to 8065. [2021-10-06 21:23:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8065 states, 8052 states have (on average 3.922379533035271) internal successors, (31583), 8064 states have internal predecessors, (31583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8065 states to 8065 states and 31583 transitions. [2021-10-06 21:23:06,296 INFO L78 Accepts]: Start accepts. Automaton has 8065 states and 31583 transitions. Word has length 3 [2021-10-06 21:23:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:06,297 INFO L470 AbstractCegarLoop]: Abstraction has 8065 states and 31583 transitions. [2021-10-06 21:23:06,297 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) [2021-10-06 21:23:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 8065 states and 31583 transitions. [2021-10-06 21:23:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:23:06,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:06,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:23:06,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:06,510 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 [2021-10-06 21:23:06,512 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 639842, now seen corresponding path program 1 times [2021-10-06 21:23:06,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:06,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74988957] [2021-10-06 21:23:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:06,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:06,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:06,517 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) [2021-10-06 21:23:06,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:23:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:06,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:23:06,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:06,892 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:23:06,892 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 5 case distinctions, treesize of input 37 treesize of output 75 [2021-10-06 21:23:06,902 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 77 treesize of output 75 [2021-10-06 21:23:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:07,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:07,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:07,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74988957] [2021-10-06 21:23:07,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74988957] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:07,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:07,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:07,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643349605] [2021-10-06 21:23:07,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:07,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:07,296 INFO L87 Difference]: Start difference. First operand 8065 states and 31583 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) [2021-10-06 21:23:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:07,639 INFO L93 Difference]: Finished difference Result 7842 states and 30814 transitions. [2021-10-06 21:23:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:07,640 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 [2021-10-06 21:23:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:07,715 INFO L225 Difference]: With dead ends: 7842 [2021-10-06 21:23:07,716 INFO L226 Difference]: Without dead ends: 7842 [2021-10-06 21:23:07,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2021-10-06 21:23:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7842. [2021-10-06 21:23:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7842 states, 7831 states have (on average 3.9348742178521263) internal successors, (30814), 7841 states have internal predecessors, (30814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 30814 transitions. [2021-10-06 21:23:08,207 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 30814 transitions. Word has length 3 [2021-10-06 21:23:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:08,209 INFO L470 AbstractCegarLoop]: Abstraction has 7842 states and 30814 transitions. [2021-10-06 21:23:08,209 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) [2021-10-06 21:23:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 30814 transitions. [2021-10-06 21:23:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:23:08,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:08,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:23:08,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:08,414 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 [2021-10-06 21:23:08,415 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:08,416 INFO L82 PathProgramCache]: Analyzing trace with hash 614904436, now seen corresponding path program 1 times [2021-10-06 21:23:08,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:08,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793603231] [2021-10-06 21:23:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:08,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:08,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:08,420 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) [2021-10-06 21:23:08,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:23:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:08,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:23:08,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:08,557 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 21:23:08,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-06 21:23:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:08,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:08,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:08,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793603231] [2021-10-06 21:23:08,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793603231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:08,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:08,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:23:08,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715378000] [2021-10-06 21:23:08,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:23:08,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:23:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:23:08,619 INFO L87 Difference]: Start difference. First operand 7842 states and 30814 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) [2021-10-06 21:23:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:08,737 INFO L93 Difference]: Finished difference Result 7764 states and 30605 transitions. [2021-10-06 21:23:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:08,738 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 [2021-10-06 21:23:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:08,795 INFO L225 Difference]: With dead ends: 7764 [2021-10-06 21:23:08,795 INFO L226 Difference]: Without dead ends: 7764 [2021-10-06 21:23:08,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:23:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7764 states. [2021-10-06 21:23:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7764 to 7764. [2021-10-06 21:23:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7764 states, 7755 states have (on average 3.9464861379754996) internal successors, (30605), 7763 states have internal predecessors, (30605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7764 states to 7764 states and 30605 transitions. [2021-10-06 21:23:09,427 INFO L78 Accepts]: Start accepts. Automaton has 7764 states and 30605 transitions. Word has length 5 [2021-10-06 21:23:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:09,428 INFO L470 AbstractCegarLoop]: Abstraction has 7764 states and 30605 transitions. [2021-10-06 21:23:09,429 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) [2021-10-06 21:23:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7764 states and 30605 transitions. [2021-10-06 21:23:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:23:09,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:09,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:23:09,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:09,633 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 [2021-10-06 21:23:09,634 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash 614904438, now seen corresponding path program 1 times [2021-10-06 21:23:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:09,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633326914] [2021-10-06 21:23:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:09,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:09,638 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) [2021-10-06 21:23:09,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:23:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:09,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:23:09,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:09,989 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:23:09,990 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 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-06 21:23:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:10,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:10,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:10,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633326914] [2021-10-06 21:23:10,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633326914] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:10,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:10,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:10,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616103783] [2021-10-06 21:23:10,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:10,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:10,187 INFO L87 Difference]: Start difference. First operand 7764 states and 30605 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) [2021-10-06 21:23:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:10,307 INFO L93 Difference]: Finished difference Result 7686 states and 30396 transitions. [2021-10-06 21:23:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:10,308 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 [2021-10-06 21:23:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:10,463 INFO L225 Difference]: With dead ends: 7686 [2021-10-06 21:23:10,463 INFO L226 Difference]: Without dead ends: 7686 [2021-10-06 21:23:10,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7686 states. [2021-10-06 21:23:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7686 to 7686. [2021-10-06 21:23:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7686 states, 7679 states have (on average 3.958327907279594) internal successors, (30396), 7685 states have internal predecessors, (30396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7686 states to 7686 states and 30396 transitions. [2021-10-06 21:23:10,888 INFO L78 Accepts]: Start accepts. Automaton has 7686 states and 30396 transitions. Word has length 5 [2021-10-06 21:23:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:10,889 INFO L470 AbstractCegarLoop]: Abstraction has 7686 states and 30396 transitions. [2021-10-06 21:23:10,889 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) [2021-10-06 21:23:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7686 states and 30396 transitions. [2021-10-06 21:23:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:23:10,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:10,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:10,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:11,095 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 [2021-10-06 21:23:11,096 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:11,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1782308618, now seen corresponding path program 1 times [2021-10-06 21:23:11,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:11,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245898548] [2021-10-06 21:23:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:11,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:11,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:11,100 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) [2021-10-06 21:23:11,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:23:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:11,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:23:11,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:11,227 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 21:23:11,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-06 21:23:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:11,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:11,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:11,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245898548] [2021-10-06 21:23:11,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245898548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:11,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:11,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:23:11,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39324942] [2021-10-06 21:23:11,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:23:11,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:23:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:23:11,298 INFO L87 Difference]: Start difference. First operand 7686 states and 30396 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:11,403 INFO L93 Difference]: Finished difference Result 7428 states and 29497 transitions. [2021-10-06 21:23:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:11,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-06 21:23:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:11,445 INFO L225 Difference]: With dead ends: 7428 [2021-10-06 21:23:11,446 INFO L226 Difference]: Without dead ends: 7428 [2021-10-06 21:23:11,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:23:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2021-10-06 21:23:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 7428. [2021-10-06 21:23:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 7423 states have (on average 3.9737302977232924) internal successors, (29497), 7427 states have internal predecessors, (29497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 29497 transitions. [2021-10-06 21:23:11,889 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 29497 transitions. Word has length 7 [2021-10-06 21:23:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:11,889 INFO L470 AbstractCegarLoop]: Abstraction has 7428 states and 29497 transitions. [2021-10-06 21:23:11,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 29497 transitions. [2021-10-06 21:23:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:23:11,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:11,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:11,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:12,105 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 [2021-10-06 21:23:12,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:12,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1782308616, now seen corresponding path program 1 times [2021-10-06 21:23:12,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:12,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75898851] [2021-10-06 21:23:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:12,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:12,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:12,108 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) [2021-10-06 21:23:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:23:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:12,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:23:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:12,418 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:23:12,419 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 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-06 21:23:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:12,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:12,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:12,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75898851] [2021-10-06 21:23:12,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75898851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:12,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:12,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:12,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606146516] [2021-10-06 21:23:12,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:12,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:12,638 INFO L87 Difference]: Start difference. First operand 7428 states and 29497 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:12,902 INFO L93 Difference]: Finished difference Result 7170 states and 28598 transitions. [2021-10-06 21:23:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-06 21:23:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:12,957 INFO L225 Difference]: With dead ends: 7170 [2021-10-06 21:23:12,957 INFO L226 Difference]: Without dead ends: 7170 [2021-10-06 21:23:12,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2021-10-06 21:23:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 7170. [2021-10-06 21:23:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7167 states have (on average 3.990233012418027) internal successors, (28598), 7169 states have internal predecessors, (28598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 28598 transitions. [2021-10-06 21:23:13,417 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 28598 transitions. Word has length 7 [2021-10-06 21:23:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:13,418 INFO L470 AbstractCegarLoop]: Abstraction has 7170 states and 28598 transitions. [2021-10-06 21:23:13,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 28598 transitions. [2021-10-06 21:23:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:23:13,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:13,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:13,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:13,634 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 [2021-10-06 21:23:13,635 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash 893384532, now seen corresponding path program 1 times [2021-10-06 21:23:13,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:13,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514737098] [2021-10-06 21:23:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:13,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:13,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:13,639 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) [2021-10-06 21:23:13,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:23:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:13,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:23:13,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:13,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:13,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:13,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514737098] [2021-10-06 21:23:13,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514737098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:13,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:13,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:23:13,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049553668] [2021-10-06 21:23:13,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:23:13,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:23:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:23:13,939 INFO L87 Difference]: Start difference. First operand 7170 states and 28598 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:14,026 INFO L93 Difference]: Finished difference Result 5658 states and 22010 transitions. [2021-10-06 21:23:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:14,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-06 21:23:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:14,053 INFO L225 Difference]: With dead ends: 5658 [2021-10-06 21:23:14,053 INFO L226 Difference]: Without dead ends: 5658 [2021-10-06 21:23:14,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:23:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-10-06 21:23:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5658. [2021-10-06 21:23:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5658 states, 5656 states have (on average 3.8914427157001414) internal successors, (22010), 5657 states have internal predecessors, (22010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 22010 transitions. [2021-10-06 21:23:14,405 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 22010 transitions. Word has length 9 [2021-10-06 21:23:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:14,405 INFO L470 AbstractCegarLoop]: Abstraction has 5658 states and 22010 transitions. [2021-10-06 21:23:14,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 22010 transitions. [2021-10-06 21:23:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:23:14,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:14,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:14,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:14,620 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 [2021-10-06 21:23:14,620 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:14,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:14,621 INFO L82 PathProgramCache]: Analyzing trace with hash 893384533, now seen corresponding path program 1 times [2021-10-06 21:23:14,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:14,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306269034] [2021-10-06 21:23:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:14,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:14,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:14,625 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) [2021-10-06 21:23:14,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:23:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:14,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:23:14,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:14,797 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-06 21:23:14,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-06 21:23:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:14,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:14,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:14,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306269034] [2021-10-06 21:23:14,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306269034] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:14,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:14,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:23:14,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321019338] [2021-10-06 21:23:14,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:23:14,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:14,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:23:14,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:23:14,997 INFO L87 Difference]: Start difference. First operand 5658 states and 22010 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:15,078 INFO L93 Difference]: Finished difference Result 4146 states and 15422 transitions. [2021-10-06 21:23:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:15,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 9 [2021-10-06 21:23:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:15,096 INFO L225 Difference]: With dead ends: 4146 [2021-10-06 21:23:15,096 INFO L226 Difference]: Without dead ends: 4146 [2021-10-06 21:23:15,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:23:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2021-10-06 21:23:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4146. [2021-10-06 21:23:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 4145 states have (on average 3.720627261761158) internal successors, (15422), 4145 states have internal predecessors, (15422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 15422 transitions. [2021-10-06 21:23:15,372 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 15422 transitions. Word has length 9 [2021-10-06 21:23:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:15,372 INFO L470 AbstractCegarLoop]: Abstraction has 4146 states and 15422 transitions. [2021-10-06 21:23:15,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 15422 transitions. [2021-10-06 21:23:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:15,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:15,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:15,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:15,606 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 [2021-10-06 21:23:15,607 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:15,608 INFO L82 PathProgramCache]: Analyzing trace with hash -62704803, now seen corresponding path program 1 times [2021-10-06 21:23:15,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:15,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103857168] [2021-10-06 21:23:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:15,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:15,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:15,611 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) [2021-10-06 21:23:15,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:23:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:15,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:23:15,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:16,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:16,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:16,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103857168] [2021-10-06 21:23:16,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103857168] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:16,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:16,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:23:16,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804250948] [2021-10-06 21:23:16,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:23:16,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:16,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:23:16,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:23:16,400 INFO L87 Difference]: Start difference. First operand 4146 states and 15422 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:16,487 INFO L93 Difference]: Finished difference Result 6361 states and 23267 transitions. [2021-10-06 21:23:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:23:16,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:16,528 INFO L225 Difference]: With dead ends: 6361 [2021-10-06 21:23:16,529 INFO L226 Difference]: Without dead ends: 4074 [2021-10-06 21:23:16,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:23:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2021-10-06 21:23:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4074. [2021-10-06 21:23:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 3.5811441198134055) internal successors, (14586), 4073 states have internal predecessors, (14586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 14586 transitions. [2021-10-06 21:23:16,719 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 14586 transitions. Word has length 38 [2021-10-06 21:23:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:16,720 INFO L470 AbstractCegarLoop]: Abstraction has 4074 states and 14586 transitions. [2021-10-06 21:23:16,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 14586 transitions. [2021-10-06 21:23:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:16,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:16,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:16,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:16,953 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 [2021-10-06 21:23:16,954 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:16,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1502944629, now seen corresponding path program 2 times [2021-10-06 21:23:16,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:16,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670268318] [2021-10-06 21:23:16,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:16,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:16,958 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) [2021-10-06 21:23:16,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:23:17,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:17,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:17,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:23:17,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:17,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:17,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:17,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670268318] [2021-10-06 21:23:17,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670268318] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:17,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:17,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:23:17,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481075899] [2021-10-06 21:23:17,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:23:17,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:17,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:23:17,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:23:17,460 INFO L87 Difference]: Start difference. First operand 4074 states and 14586 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:18,342 INFO L93 Difference]: Finished difference Result 5672 states and 20144 transitions. [2021-10-06 21:23:18,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:23:18,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:18,364 INFO L225 Difference]: With dead ends: 5672 [2021-10-06 21:23:18,364 INFO L226 Difference]: Without dead ends: 4732 [2021-10-06 21:23:18,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 278.7ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:23:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2021-10-06 21:23:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4424. [2021-10-06 21:23:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 3.5530183133619717) internal successors, (15715), 4423 states have internal predecessors, (15715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 15715 transitions. [2021-10-06 21:23:18,515 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 15715 transitions. Word has length 38 [2021-10-06 21:23:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:18,515 INFO L470 AbstractCegarLoop]: Abstraction has 4424 states and 15715 transitions. [2021-10-06 21:23:18,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 15715 transitions. [2021-10-06 21:23:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:18,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:18,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:18,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:18,750 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 [2021-10-06 21:23:18,755 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:18,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:18,756 INFO L82 PathProgramCache]: Analyzing trace with hash -670692447, now seen corresponding path program 3 times [2021-10-06 21:23:18,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:18,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685055492] [2021-10-06 21:23:18,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:18,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:18,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:18,758 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) [2021-10-06 21:23:18,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:23:18,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:23:18,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:18,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:23:18,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:19,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:19,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:19,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685055492] [2021-10-06 21:23:19,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685055492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:19,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:19,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-06 21:23:19,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921045347] [2021-10-06 21:23:19,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:23:19,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:19,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:23:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:23:19,375 INFO L87 Difference]: Start difference. First operand 4424 states and 15715 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:20,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:20,871 INFO L93 Difference]: Finished difference Result 5062 states and 16901 transitions. [2021-10-06 21:23:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:23:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:20,888 INFO L225 Difference]: With dead ends: 5062 [2021-10-06 21:23:20,889 INFO L226 Difference]: Without dead ends: 4004 [2021-10-06 21:23:20,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 667.3ms TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:23:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2021-10-06 21:23:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3640. [2021-10-06 21:23:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.291838417147568) internal successors, (11979), 3639 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 11979 transitions. [2021-10-06 21:23:21,036 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 11979 transitions. Word has length 38 [2021-10-06 21:23:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:21,037 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 11979 transitions. [2021-10-06 21:23:21,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 11979 transitions. [2021-10-06 21:23:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:21,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:21,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:21,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:21,267 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 [2021-10-06 21:23:21,267 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:21,268 INFO L82 PathProgramCache]: Analyzing trace with hash -961767611, now seen corresponding path program 4 times [2021-10-06 21:23:21,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:21,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526995149] [2021-10-06 21:23:21,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:21,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:21,270 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) [2021-10-06 21:23:21,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:23:21,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:21,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:21,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:23:21,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:21,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:21,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:21,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526995149] [2021-10-06 21:23:21,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526995149] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:21,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:21,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-06 21:23:21,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891949978] [2021-10-06 21:23:21,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:23:21,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:23:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:23:21,944 INFO L87 Difference]: Start difference. First operand 3640 states and 11979 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:22,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:22,971 INFO L93 Difference]: Finished difference Result 3118 states and 9626 transitions. [2021-10-06 21:23:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:23:22,973 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:22,985 INFO L225 Difference]: With dead ends: 3118 [2021-10-06 21:23:22,986 INFO L226 Difference]: Without dead ends: 3022 [2021-10-06 21:23:22,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 495.1ms TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:23:22,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-10-06 21:23:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2950. [2021-10-06 21:23:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2949 states have (on average 3.126144455747711) internal successors, (9219), 2949 states have internal predecessors, (9219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 9219 transitions. [2021-10-06 21:23:23,083 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 9219 transitions. Word has length 38 [2021-10-06 21:23:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:23,084 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 9219 transitions. [2021-10-06 21:23:23,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 9219 transitions. [2021-10-06 21:23:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:23,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:23,095 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:23,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:23,307 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 [2021-10-06 21:23:23,308 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1143521617, now seen corresponding path program 5 times [2021-10-06 21:23:23,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:23,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586616761] [2021-10-06 21:23:23,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:23:23,311 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:23,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:23,312 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) [2021-10-06 21:23:23,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:23:23,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:23,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:23,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:23:23,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:23,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:23,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:23,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586616761] [2021-10-06 21:23:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586616761] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:23,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:23,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:23:23,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460691801] [2021-10-06 21:23:23,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:23:23,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:23:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:23:23,792 INFO L87 Difference]: Start difference. First operand 2950 states and 9219 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:24,380 INFO L93 Difference]: Finished difference Result 1790 states and 5117 transitions. [2021-10-06 21:23:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:23:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:24,386 INFO L225 Difference]: With dead ends: 1790 [2021-10-06 21:23:24,386 INFO L226 Difference]: Without dead ends: 1790 [2021-10-06 21:23:24,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:23:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-10-06 21:23:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1702. [2021-10-06 21:23:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.8977072310405645) internal successors, (4929), 1701 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4929 transitions. [2021-10-06 21:23:24,438 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4929 transitions. Word has length 38 [2021-10-06 21:23:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:24,439 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4929 transitions. [2021-10-06 21:23:24,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4929 transitions. [2021-10-06 21:23:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:24,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:24,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:24,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:24,658 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 [2021-10-06 21:23:24,659 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1975173369, now seen corresponding path program 6 times [2021-10-06 21:23:24,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:24,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912636077] [2021-10-06 21:23:24,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:24,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:24,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:24,662 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) [2021-10-06 21:23:24,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:23:24,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:23:24,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:24,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:25,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:25,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:25,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912636077] [2021-10-06 21:23:25,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912636077] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:25,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:25,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:25,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283260853] [2021-10-06 21:23:25,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:25,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:25,523 INFO L87 Difference]: Start difference. First operand 1702 states and 4929 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:29,214 INFO L93 Difference]: Finished difference Result 2534 states and 7417 transitions. [2021-10-06 21:23:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:23:29,215 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:29,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:29,220 INFO L225 Difference]: With dead ends: 2534 [2021-10-06 21:23:29,220 INFO L226 Difference]: Without dead ends: 2410 [2021-10-06 21:23:29,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1843.8ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:23:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-10-06 21:23:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1830. [2021-10-06 21:23:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1829 states have (on average 2.883542919628212) internal successors, (5274), 1829 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 5274 transitions. [2021-10-06 21:23:29,281 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 5274 transitions. Word has length 38 [2021-10-06 21:23:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:29,281 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 5274 transitions. [2021-10-06 21:23:29,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 5274 transitions. [2021-10-06 21:23:29,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:29,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:29,288 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:29,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:29,500 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 [2021-10-06 21:23:29,501 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2097511727, now seen corresponding path program 7 times [2021-10-06 21:23:29,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:29,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898067284] [2021-10-06 21:23:29,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:23:29,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:29,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:29,505 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) [2021-10-06 21:23:29,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:23:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:23:29,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:29,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:30,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:30,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898067284] [2021-10-06 21:23:30,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898067284] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:30,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:30,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-06 21:23:30,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453317858] [2021-10-06 21:23:30,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:23:30,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:23:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:23:30,522 INFO L87 Difference]: Start difference. First operand 1830 states and 5274 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:36,392 INFO L93 Difference]: Finished difference Result 2916 states and 8506 transitions. [2021-10-06 21:23:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:23:36,393 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:36,400 INFO L225 Difference]: With dead ends: 2916 [2021-10-06 21:23:36,400 INFO L226 Difference]: Without dead ends: 2868 [2021-10-06 21:23:36,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2829.4ms TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:23:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2021-10-06 21:23:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1960. [2021-10-06 21:23:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 2.880551301684533) internal successors, (5643), 1959 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 5643 transitions. [2021-10-06 21:23:36,473 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 5643 transitions. Word has length 38 [2021-10-06 21:23:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:36,473 INFO L470 AbstractCegarLoop]: Abstraction has 1960 states and 5643 transitions. [2021-10-06 21:23:36,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 5643 transitions. [2021-10-06 21:23:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:36,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:36,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:36,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:36,695 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 [2021-10-06 21:23:36,695 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:36,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:36,696 INFO L82 PathProgramCache]: Analyzing trace with hash 760049899, now seen corresponding path program 8 times [2021-10-06 21:23:36,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:36,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14267527] [2021-10-06 21:23:36,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:36,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:36,698 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) [2021-10-06 21:23:36,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:23:36,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:36,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:36,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:36,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:37,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:37,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:37,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14267527] [2021-10-06 21:23:37,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14267527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:37,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:37,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:37,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684185265] [2021-10-06 21:23:37,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:37,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:37,492 INFO L87 Difference]: Start difference. First operand 1960 states and 5643 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:41,008 INFO L93 Difference]: Finished difference Result 2872 states and 8253 transitions. [2021-10-06 21:23:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:23:41,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:41,015 INFO L225 Difference]: With dead ends: 2872 [2021-10-06 21:23:41,015 INFO L226 Difference]: Without dead ends: 2712 [2021-10-06 21:23:41,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1458.2ms TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:23:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-10-06 21:23:41,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1980. [2021-10-06 21:23:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1979 states have (on average 2.8716523496715514) internal successors, (5683), 1979 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 5683 transitions. [2021-10-06 21:23:41,085 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 5683 transitions. Word has length 38 [2021-10-06 21:23:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:41,086 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 5683 transitions. [2021-10-06 21:23:41,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 5683 transitions. [2021-10-06 21:23:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:41,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:41,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:41,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:41,306 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 [2021-10-06 21:23:41,307 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1476112659, now seen corresponding path program 9 times [2021-10-06 21:23:41,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:41,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689306760] [2021-10-06 21:23:41,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:41,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:41,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:41,310 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) [2021-10-06 21:23:41,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:23:41,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:23:41,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:41,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:23:41,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:41,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:42,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:42,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689306760] [2021-10-06 21:23:42,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689306760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:42,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:42,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-06 21:23:42,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543322203] [2021-10-06 21:23:42,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:23:42,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:23:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:23:42,206 INFO L87 Difference]: Start difference. First operand 1980 states and 5683 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:48,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:48,559 INFO L93 Difference]: Finished difference Result 3488 states and 10209 transitions. [2021-10-06 21:23:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:23:48,560 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:48,568 INFO L225 Difference]: With dead ends: 3488 [2021-10-06 21:23:48,568 INFO L226 Difference]: Without dead ends: 3470 [2021-10-06 21:23:48,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2998.7ms TimeCoverageRelationStatistics Valid=391, Invalid=1091, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:23:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2021-10-06 21:23:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 1934. [2021-10-06 21:23:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 2.8737713398861873) internal successors, (5555), 1933 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5555 transitions. [2021-10-06 21:23:48,642 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5555 transitions. Word has length 38 [2021-10-06 21:23:48,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:48,642 INFO L470 AbstractCegarLoop]: Abstraction has 1934 states and 5555 transitions. [2021-10-06 21:23:48,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5555 transitions. [2021-10-06 21:23:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:48,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:48,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:48,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:48,848 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 [2021-10-06 21:23:48,848 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:48,850 INFO L82 PathProgramCache]: Analyzing trace with hash 137764401, now seen corresponding path program 10 times [2021-10-06 21:23:48,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:48,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389457490] [2021-10-06 21:23:48,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:48,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:48,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:48,853 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) [2021-10-06 21:23:48,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:23:49,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:49,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:49,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:23:49,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:49,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:49,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:49,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389457490] [2021-10-06 21:23:49,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389457490] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:49,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:49,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-06 21:23:49,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367845325] [2021-10-06 21:23:49,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:23:49,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:23:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:23:49,733 INFO L87 Difference]: Start difference. First operand 1934 states and 5555 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:54,743 INFO L93 Difference]: Finished difference Result 3134 states and 9005 transitions. [2021-10-06 21:23:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:23:54,744 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:54,750 INFO L225 Difference]: With dead ends: 3134 [2021-10-06 21:23:54,751 INFO L226 Difference]: Without dead ends: 3094 [2021-10-06 21:23:54,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2516.6ms TimeCoverageRelationStatistics Valid=425, Invalid=1381, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:23:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-10-06 21:23:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 1930. [2021-10-06 21:23:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 2.8750648004147226) internal successors, (5546), 1929 states have internal predecessors, (5546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 5546 transitions. [2021-10-06 21:23:54,799 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 5546 transitions. Word has length 38 [2021-10-06 21:23:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:54,800 INFO L470 AbstractCegarLoop]: Abstraction has 1930 states and 5546 transitions. [2021-10-06 21:23:54,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 5546 transitions. [2021-10-06 21:23:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:54,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:54,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:54,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:55,004 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 [2021-10-06 21:23:55,005 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:55,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:55,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1777317625, now seen corresponding path program 11 times [2021-10-06 21:23:55,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:55,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530747599] [2021-10-06 21:23:55,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:23:55,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:55,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:55,010 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) [2021-10-06 21:23:55,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:23:55,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:23:55,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:55,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:23:55,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:55,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:55,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:55,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530747599] [2021-10-06 21:23:55,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530747599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:55,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:55,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:23:55,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862779706] [2021-10-06 21:23:55,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:23:55,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:55,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:23:55,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:23:55,819 INFO L87 Difference]: Start difference. First operand 1930 states and 5546 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:57,729 INFO L93 Difference]: Finished difference Result 2306 states and 6471 transitions. [2021-10-06 21:23:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:23:57,730 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 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 38 [2021-10-06 21:23:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:57,736 INFO L225 Difference]: With dead ends: 2306 [2021-10-06 21:23:57,736 INFO L226 Difference]: Without dead ends: 2146 [2021-10-06 21:23:57,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1093.1ms TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:23:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-10-06 21:23:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1970. [2021-10-06 21:23:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 2.8588115794819706) internal successors, (5629), 1969 states have internal predecessors, (5629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 5629 transitions. [2021-10-06 21:23:57,798 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 5629 transitions. Word has length 38 [2021-10-06 21:23:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:57,799 INFO L470 AbstractCegarLoop]: Abstraction has 1970 states and 5629 transitions. [2021-10-06 21:23:57,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 5629 transitions. [2021-10-06 21:23:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:23:57,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:57,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:57,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:58,020 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 [2021-10-06 21:23:58,021 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:23:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1061254865, now seen corresponding path program 12 times [2021-10-06 21:23:58,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:58,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416053440] [2021-10-06 21:23:58,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:58,023 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:58,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:58,024 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) [2021-10-06 21:23:58,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:23:58,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:23:58,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:58,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:23:58,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:58,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:58,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:58,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416053440] [2021-10-06 21:23:58,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416053440] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:58,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:58,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-06 21:23:58,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576853269] [2021-10-06 21:23:58,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:23:58,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:23:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:23:58,962 INFO L87 Difference]: Start difference. First operand 1970 states and 5629 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:02,732 INFO L93 Difference]: Finished difference Result 2860 states and 8148 transitions. [2021-10-06 21:24:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:24:02,734 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:02,743 INFO L225 Difference]: With dead ends: 2860 [2021-10-06 21:24:02,743 INFO L226 Difference]: Without dead ends: 2842 [2021-10-06 21:24:02,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1882.2ms TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:24:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-10-06 21:24:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1886. [2021-10-06 21:24:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 2.8562334217506633) internal successors, (5384), 1885 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 5384 transitions. [2021-10-06 21:24:02,811 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 5384 transitions. Word has length 38 [2021-10-06 21:24:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:02,811 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 5384 transitions. [2021-10-06 21:24:02,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 5384 transitions. [2021-10-06 21:24:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:02,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:02,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:02,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:03,031 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 [2021-10-06 21:24:03,032 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:03,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1895364173, now seen corresponding path program 13 times [2021-10-06 21:24:03,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:03,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862670031] [2021-10-06 21:24:03,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:24:03,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:03,036 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) [2021-10-06 21:24:03,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:24:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:03,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:24:03,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:03,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:03,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:03,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862670031] [2021-10-06 21:24:03,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862670031] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:03,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:03,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-06 21:24:03,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135606909] [2021-10-06 21:24:03,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:24:03,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:24:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:24:03,997 INFO L87 Difference]: Start difference. First operand 1886 states and 5384 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:07,256 INFO L93 Difference]: Finished difference Result 2816 states and 8045 transitions. [2021-10-06 21:24:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:24:07,258 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:07,263 INFO L225 Difference]: With dead ends: 2816 [2021-10-06 21:24:07,263 INFO L226 Difference]: Without dead ends: 2804 [2021-10-06 21:24:07,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1669.7ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:24:07,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-10-06 21:24:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1878. [2021-10-06 21:24:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 2.8588172615876397) internal successors, (5366), 1877 states have internal predecessors, (5366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 5366 transitions. [2021-10-06 21:24:07,301 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 5366 transitions. Word has length 38 [2021-10-06 21:24:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:07,301 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 5366 transitions. [2021-10-06 21:24:07,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 5366 transitions. [2021-10-06 21:24:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:07,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:07,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:07,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:07,505 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 [2021-10-06 21:24:07,506 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:07,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:07,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1420215003, now seen corresponding path program 14 times [2021-10-06 21:24:07,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:07,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544321415] [2021-10-06 21:24:07,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:24:07,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:07,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:07,509 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) [2021-10-06 21:24:07,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:24:07,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:24:07,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:07,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:24:07,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:08,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:08,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:08,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544321415] [2021-10-06 21:24:08,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544321415] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:08,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:08,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-06 21:24:08,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892600315] [2021-10-06 21:24:08,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:24:08,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:24:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:24:08,480 INFO L87 Difference]: Start difference. First operand 1878 states and 5366 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:10,217 INFO L93 Difference]: Finished difference Result 2046 states and 5708 transitions. [2021-10-06 21:24:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:24:10,221 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:10,227 INFO L225 Difference]: With dead ends: 2046 [2021-10-06 21:24:10,227 INFO L226 Difference]: Without dead ends: 1974 [2021-10-06 21:24:10,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1226.6ms TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:24:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2021-10-06 21:24:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1848. [2021-10-06 21:24:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 2.8586897671900378) internal successors, (5280), 1847 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 5280 transitions. [2021-10-06 21:24:10,283 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 5280 transitions. Word has length 38 [2021-10-06 21:24:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:10,283 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 5280 transitions. [2021-10-06 21:24:10,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 5280 transitions. [2021-10-06 21:24:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:10,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:10,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:10,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-06 21:24:10,503 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 [2021-10-06 21:24:10,503 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:10,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1942522969, now seen corresponding path program 15 times [2021-10-06 21:24:10,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:10,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122554605] [2021-10-06 21:24:10,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:24:10,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:10,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:10,508 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) [2021-10-06 21:24:10,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:24:10,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:24:10,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:10,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:24:10,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:11,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:11,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:11,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122554605] [2021-10-06 21:24:11,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122554605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:11,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:11,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:24:11,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156384167] [2021-10-06 21:24:11,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:24:11,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:24:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:24:11,423 INFO L87 Difference]: Start difference. First operand 1848 states and 5280 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:17,030 INFO L93 Difference]: Finished difference Result 2854 states and 8098 transitions. [2021-10-06 21:24:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:24:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:17,036 INFO L225 Difference]: With dead ends: 2854 [2021-10-06 21:24:17,036 INFO L226 Difference]: Without dead ends: 2670 [2021-10-06 21:24:17,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2659.4ms TimeCoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:24:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2021-10-06 21:24:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 1848. [2021-10-06 21:24:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 2.854358419057932) internal successors, (5272), 1847 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 5272 transitions. [2021-10-06 21:24:17,079 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 5272 transitions. Word has length 38 [2021-10-06 21:24:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:17,080 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 5272 transitions. [2021-10-06 21:24:17,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 5272 transitions. [2021-10-06 21:24:17,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:17,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:17,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:17,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:17,285 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 [2021-10-06 21:24:17,286 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:17,287 INFO L82 PathProgramCache]: Analyzing trace with hash 727399499, now seen corresponding path program 16 times [2021-10-06 21:24:17,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:17,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748168532] [2021-10-06 21:24:17,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:24:17,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:17,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:17,290 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) [2021-10-06 21:24:17,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:24:17,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:24:17,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:17,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:24:17,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:17,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:18,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:18,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748168532] [2021-10-06 21:24:18,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748168532] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:18,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:18,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:24:18,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811194071] [2021-10-06 21:24:18,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:24:18,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:24:18,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:24:18,198 INFO L87 Difference]: Start difference. First operand 1848 states and 5272 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:22,010 INFO L93 Difference]: Finished difference Result 2538 states and 7107 transitions. [2021-10-06 21:24:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:24:22,010 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:22,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:22,016 INFO L225 Difference]: With dead ends: 2538 [2021-10-06 21:24:22,016 INFO L226 Difference]: Without dead ends: 2362 [2021-10-06 21:24:22,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1590.5ms TimeCoverageRelationStatistics Valid=258, Invalid=1224, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:24:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2021-10-06 21:24:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 1832. [2021-10-06 21:24:22,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 2.8574549426542872) internal successors, (5232), 1831 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 5232 transitions. [2021-10-06 21:24:22,058 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 5232 transitions. Word has length 38 [2021-10-06 21:24:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:22,059 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 5232 transitions. [2021-10-06 21:24:22,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 5232 transitions. [2021-10-06 21:24:22,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:22,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:22,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:22,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:22,264 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 [2021-10-06 21:24:22,264 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:22,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1270604855, now seen corresponding path program 17 times [2021-10-06 21:24:22,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:22,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674908912] [2021-10-06 21:24:22,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:24:22,267 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:22,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:22,268 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) [2021-10-06 21:24:22,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:24:22,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:24:22,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:22,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:24:22,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:22,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:23,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:23,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674908912] [2021-10-06 21:24:23,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674908912] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:23,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:23,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:24:23,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393486515] [2021-10-06 21:24:23,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:24:23,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:24:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:24:23,342 INFO L87 Difference]: Start difference. First operand 1832 states and 5232 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:27,785 INFO L93 Difference]: Finished difference Result 2268 states and 6278 transitions. [2021-10-06 21:24:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:24:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:27,790 INFO L225 Difference]: With dead ends: 2268 [2021-10-06 21:24:27,790 INFO L226 Difference]: Without dead ends: 2084 [2021-10-06 21:24:27,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2171.9ms TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:24:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-10-06 21:24:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1596. [2021-10-06 21:24:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1595 states have (on average 2.8100313479623824) internal successors, (4482), 1595 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 4482 transitions. [2021-10-06 21:24:27,822 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 4482 transitions. Word has length 38 [2021-10-06 21:24:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:27,823 INFO L470 AbstractCegarLoop]: Abstraction has 1596 states and 4482 transitions. [2021-10-06 21:24:27,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 4482 transitions. [2021-10-06 21:24:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:27,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:27,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:27,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-06 21:24:28,027 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 [2021-10-06 21:24:28,028 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1820665787, now seen corresponding path program 18 times [2021-10-06 21:24:28,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:28,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12047072] [2021-10-06 21:24:28,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:24:28,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:28,032 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) [2021-10-06 21:24:28,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:24:28,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:24:28,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:28,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:24:28,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:28,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:28,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:28,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12047072] [2021-10-06 21:24:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12047072] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:28,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:24:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354307753] [2021-10-06 21:24:28,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:24:28,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:24:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:24:28,954 INFO L87 Difference]: Start difference. First operand 1596 states and 4482 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:32,347 INFO L93 Difference]: Finished difference Result 1904 states and 5270 transitions. [2021-10-06 21:24:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:24:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:32,351 INFO L225 Difference]: With dead ends: 1904 [2021-10-06 21:24:32,351 INFO L226 Difference]: Without dead ends: 1904 [2021-10-06 21:24:32,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1548.3ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:24:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2021-10-06 21:24:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1676. [2021-10-06 21:24:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1675 states have (on average 2.795223880597015) internal successors, (4682), 1675 states have internal predecessors, (4682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 4682 transitions. [2021-10-06 21:24:32,389 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 4682 transitions. Word has length 38 [2021-10-06 21:24:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:32,389 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 4682 transitions. [2021-10-06 21:24:32,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 4682 transitions. [2021-10-06 21:24:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:32,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:32,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:32,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:32,593 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 [2021-10-06 21:24:32,594 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:32,595 INFO L82 PathProgramCache]: Analyzing trace with hash 460678021, now seen corresponding path program 19 times [2021-10-06 21:24:32,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:32,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738255868] [2021-10-06 21:24:32,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:24:32,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:32,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:32,598 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) [2021-10-06 21:24:32,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:24:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:32,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:24:32,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:33,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:33,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:33,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738255868] [2021-10-06 21:24:33,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738255868] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:33,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:33,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:24:33,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49516445] [2021-10-06 21:24:33,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:24:33,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:24:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:24:33,948 INFO L87 Difference]: Start difference. First operand 1676 states and 4682 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:48,287 INFO L93 Difference]: Finished difference Result 2974 states and 8191 transitions. [2021-10-06 21:24:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:24:48,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:24:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:48,293 INFO L225 Difference]: With dead ends: 2974 [2021-10-06 21:24:48,293 INFO L226 Difference]: Without dead ends: 2956 [2021-10-06 21:24:48,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 7847.7ms TimeCoverageRelationStatistics Valid=528, Invalid=1824, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:24:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-10-06 21:24:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1842. [2021-10-06 21:24:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 2.793047256925584) internal successors, (5142), 1841 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 5142 transitions. [2021-10-06 21:24:48,328 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 5142 transitions. Word has length 38 [2021-10-06 21:24:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:48,329 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 5142 transitions. [2021-10-06 21:24:48,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 5142 transitions. [2021-10-06 21:24:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:24:48,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:48,333 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:48,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:48,533 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 [2021-10-06 21:24:48,534 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:24:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1126385813, now seen corresponding path program 20 times [2021-10-06 21:24:48,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:48,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859726103] [2021-10-06 21:24:48,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:24:48,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:48,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:48,537 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) [2021-10-06 21:24:48,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:24:48,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:24:48,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:48,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:24:48,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:49,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:49,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:49,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859726103] [2021-10-06 21:24:49,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859726103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:49,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:49,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:24:49,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528581728] [2021-10-06 21:24:49,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:24:49,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:24:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:24:49,709 INFO L87 Difference]: Start difference. First operand 1842 states and 5142 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:02,037 INFO L93 Difference]: Finished difference Result 3008 states and 8291 transitions. [2021-10-06 21:25:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:25:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:25:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:02,044 INFO L225 Difference]: With dead ends: 3008 [2021-10-06 21:25:02,044 INFO L226 Difference]: Without dead ends: 2996 [2021-10-06 21:25:02,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 6583.5ms TimeCoverageRelationStatistics Valid=498, Invalid=2154, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:25:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2021-10-06 21:25:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 1844. [2021-10-06 21:25:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 2.792186652197504) internal successors, (5146), 1843 states have internal predecessors, (5146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 5146 transitions. [2021-10-06 21:25:02,093 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 5146 transitions. Word has length 38 [2021-10-06 21:25:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:02,093 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 5146 transitions. [2021-10-06 21:25:02,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 5146 transitions. [2021-10-06 21:25:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:25:02,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:02,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:02,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-06 21:25:02,311 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 [2021-10-06 21:25:02,312 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:25:02,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:02,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1573884675, now seen corresponding path program 21 times [2021-10-06 21:25:02,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:02,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019126707] [2021-10-06 21:25:02,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:25:02,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:02,315 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) [2021-10-06 21:25:02,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:25:02,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:25:02,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:02,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:25:02,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:02,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:03,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:03,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019126707] [2021-10-06 21:25:03,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019126707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:25:03,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:25:03,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:25:03,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272050418] [2021-10-06 21:25:03,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:25:03,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:03,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:25:03,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:25:03,517 INFO L87 Difference]: Start difference. First operand 1844 states and 5146 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:10,683 INFO L93 Difference]: Finished difference Result 2224 states and 6076 transitions. [2021-10-06 21:25:10,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:25:10,684 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:25:10,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:10,689 INFO L225 Difference]: With dead ends: 2224 [2021-10-06 21:25:10,689 INFO L226 Difference]: Without dead ends: 2198 [2021-10-06 21:25:10,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3859.6ms TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:25:10,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2021-10-06 21:25:10,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 1850. [2021-10-06 21:25:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1849 states have (on average 2.785289345592212) internal successors, (5150), 1849 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:10,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 5150 transitions. [2021-10-06 21:25:10,723 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 5150 transitions. Word has length 38 [2021-10-06 21:25:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:10,723 INFO L470 AbstractCegarLoop]: Abstraction has 1850 states and 5150 transitions. [2021-10-06 21:25:10,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 5150 transitions. [2021-10-06 21:25:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:25:10,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:10,728 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:10,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-06 21:25:10,934 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 [2021-10-06 21:25:10,935 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:25:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:10,936 INFO L82 PathProgramCache]: Analyzing trace with hash 967557861, now seen corresponding path program 22 times [2021-10-06 21:25:10,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:10,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250494243] [2021-10-06 21:25:10,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:25:10,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:10,938 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) [2021-10-06 21:25:10,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:25:11,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:25:11,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:11,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:25:11,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:11,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:12,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:12,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250494243] [2021-10-06 21:25:12,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250494243] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:25:12,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:25:12,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:25:12,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65448367] [2021-10-06 21:25:12,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:25:12,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:25:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:25:12,136 INFO L87 Difference]: Start difference. First operand 1850 states and 5150 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:29,023 INFO L93 Difference]: Finished difference Result 3548 states and 9687 transitions. [2021-10-06 21:25:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:25:29,024 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:25:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:29,031 INFO L225 Difference]: With dead ends: 3548 [2021-10-06 21:25:29,031 INFO L226 Difference]: Without dead ends: 3530 [2021-10-06 21:25:29,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 9500.1ms TimeCoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:25:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2021-10-06 21:25:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 1850. [2021-10-06 21:25:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1849 states have (on average 2.783126014061655) internal successors, (5146), 1849 states have internal predecessors, (5146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 5146 transitions. [2021-10-06 21:25:29,074 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 5146 transitions. Word has length 38 [2021-10-06 21:25:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:29,074 INFO L470 AbstractCegarLoop]: Abstraction has 1850 states and 5146 transitions. [2021-10-06 21:25:29,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 5146 transitions. [2021-10-06 21:25:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:25:29,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:29,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:29,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:29,279 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 [2021-10-06 21:25:29,280 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:25:29,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:29,280 INFO L82 PathProgramCache]: Analyzing trace with hash -619505973, now seen corresponding path program 23 times [2021-10-06 21:25:29,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:29,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751062842] [2021-10-06 21:25:29,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:25:29,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:29,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:29,283 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) [2021-10-06 21:25:29,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:25:29,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:25:29,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:29,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:25:29,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:29,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:30,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:30,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751062842] [2021-10-06 21:25:30,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751062842] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:25:30,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:25:30,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:25:30,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844605096] [2021-10-06 21:25:30,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:25:30,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:25:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:25:30,513 INFO L87 Difference]: Start difference. First operand 1850 states and 5146 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:42,610 INFO L93 Difference]: Finished difference Result 3014 states and 8207 transitions. [2021-10-06 21:25:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:25:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:25:42,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:42,617 INFO L225 Difference]: With dead ends: 3014 [2021-10-06 21:25:42,617 INFO L226 Difference]: Without dead ends: 3002 [2021-10-06 21:25:42,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 6462.0ms TimeCoverageRelationStatistics Valid=463, Invalid=2189, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:25:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-10-06 21:25:42,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1834. [2021-10-06 21:25:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 2.78341516639389) internal successors, (5102), 1833 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 5102 transitions. [2021-10-06 21:25:42,657 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 5102 transitions. Word has length 38 [2021-10-06 21:25:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:42,657 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 5102 transitions. [2021-10-06 21:25:42,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 5102 transitions. [2021-10-06 21:25:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:25:42,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:42,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:42,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:42,866 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 [2021-10-06 21:25:42,867 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:25:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1822500525, now seen corresponding path program 24 times [2021-10-06 21:25:42,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:42,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431430053] [2021-10-06 21:25:42,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:25:42,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:42,870 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) [2021-10-06 21:25:42,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:25:43,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:25:43,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:43,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:25:43,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:43,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:44,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:44,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431430053] [2021-10-06 21:25:44,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431430053] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:25:44,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:25:44,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:25:44,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448228830] [2021-10-06 21:25:44,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:25:44,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:25:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:25:44,176 INFO L87 Difference]: Start difference. First operand 1834 states and 5102 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:58,738 INFO L93 Difference]: Finished difference Result 3168 states and 8602 transitions. [2021-10-06 21:25:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:25:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:25:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:58,745 INFO L225 Difference]: With dead ends: 3168 [2021-10-06 21:25:58,745 INFO L226 Difference]: Without dead ends: 3150 [2021-10-06 21:25:58,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 7559.6ms TimeCoverageRelationStatistics Valid=448, Invalid=1622, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:25:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2021-10-06 21:25:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 1738. [2021-10-06 21:25:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 2.7645365572826712) internal successors, (4802), 1737 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 4802 transitions. [2021-10-06 21:25:58,785 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 4802 transitions. Word has length 38 [2021-10-06 21:25:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:58,785 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 4802 transitions. [2021-10-06 21:25:58,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 4802 transitions. [2021-10-06 21:25:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:25:58,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:58,790 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:58,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:58,990 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 [2021-10-06 21:25:58,991 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:25:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1929286919, now seen corresponding path program 25 times [2021-10-06 21:25:58,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:58,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110286881] [2021-10-06 21:25:58,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:25:58,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:58,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:58,995 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) [2021-10-06 21:25:58,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:25:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:25:59,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:25:59,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:59,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:00,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:00,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110286881] [2021-10-06 21:26:00,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110286881] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:00,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:00,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:26:00,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555887326] [2021-10-06 21:26:00,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:26:00,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:26:00,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:00,353 INFO L87 Difference]: Start difference. First operand 1738 states and 4802 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:14,370 INFO L93 Difference]: Finished difference Result 3002 states and 8040 transitions. [2021-10-06 21:26:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:26:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:26:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:14,378 INFO L225 Difference]: With dead ends: 3002 [2021-10-06 21:26:14,378 INFO L226 Difference]: Without dead ends: 2990 [2021-10-06 21:26:14,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 7972.9ms TimeCoverageRelationStatistics Valid=424, Invalid=1556, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:26:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-10-06 21:26:14,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1846. [2021-10-06 21:26:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 2.7582655826558264) internal successors, (5089), 1845 states have internal predecessors, (5089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 5089 transitions. [2021-10-06 21:26:14,418 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 5089 transitions. Word has length 38 [2021-10-06 21:26:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:14,418 INFO L470 AbstractCegarLoop]: Abstraction has 1846 states and 5089 transitions. [2021-10-06 21:26:14,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 5089 transitions. [2021-10-06 21:26:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:26:14,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:14,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:14,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:14,623 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 [2021-10-06 21:26:14,623 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:14,624 INFO L82 PathProgramCache]: Analyzing trace with hash 892217123, now seen corresponding path program 26 times [2021-10-06 21:26:14,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:14,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632614143] [2021-10-06 21:26:14,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:14,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:14,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:14,626 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) [2021-10-06 21:26:14,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:26:15,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:26:15,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:15,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:26:15,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:15,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:15,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:15,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632614143] [2021-10-06 21:26:15,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632614143] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:15,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:15,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:26:15,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788303528] [2021-10-06 21:26:15,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:26:15,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:26:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:15,881 INFO L87 Difference]: Start difference. First operand 1846 states and 5089 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:27,684 INFO L93 Difference]: Finished difference Result 3110 states and 8373 transitions. [2021-10-06 21:26:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:26:27,685 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:26:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:27,690 INFO L225 Difference]: With dead ends: 3110 [2021-10-06 21:26:27,691 INFO L226 Difference]: Without dead ends: 3104 [2021-10-06 21:26:27,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 5559.2ms TimeCoverageRelationStatistics Valid=416, Invalid=2034, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:26:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-10-06 21:26:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 1868. [2021-10-06 21:26:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.7541510444563473) internal successors, (5142), 1867 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5142 transitions. [2021-10-06 21:26:27,742 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5142 transitions. Word has length 38 [2021-10-06 21:26:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:27,742 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5142 transitions. [2021-10-06 21:26:27,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5142 transitions. [2021-10-06 21:26:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:26:27,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:27,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:27,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:27,962 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 [2021-10-06 21:26:27,963 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:27,964 INFO L82 PathProgramCache]: Analyzing trace with hash 938475793, now seen corresponding path program 27 times [2021-10-06 21:26:27,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:27,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377943076] [2021-10-06 21:26:27,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:27,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:27,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:27,967 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) [2021-10-06 21:26:27,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:26:28,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:26:28,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:28,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:26:28,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:28,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:29,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377943076] [2021-10-06 21:26:29,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377943076] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:29,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:29,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:26:29,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450224842] [2021-10-06 21:26:29,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:26:29,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:26:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:29,302 INFO L87 Difference]: Start difference. First operand 1868 states and 5142 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:45,665 INFO L93 Difference]: Finished difference Result 3594 states and 9682 transitions. [2021-10-06 21:26:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:26:45,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:26:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:45,672 INFO L225 Difference]: With dead ends: 3594 [2021-10-06 21:26:45,672 INFO L226 Difference]: Without dead ends: 3580 [2021-10-06 21:26:45,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 9857.2ms TimeCoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:26:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2021-10-06 21:26:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 1862. [2021-10-06 21:26:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.756582482536271) internal successors, (5130), 1861 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 5130 transitions. [2021-10-06 21:26:45,712 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 5130 transitions. Word has length 38 [2021-10-06 21:26:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:45,712 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 5130 transitions. [2021-10-06 21:26:45,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 5130 transitions. [2021-10-06 21:26:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:26:45,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:45,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:45,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:45,918 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 [2021-10-06 21:26:45,919 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:45,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1530037019, now seen corresponding path program 28 times [2021-10-06 21:26:45,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:45,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641785936] [2021-10-06 21:26:45,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:45,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:45,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:45,923 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) [2021-10-06 21:26:45,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:26:46,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:46,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:46,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:26:46,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:46,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:47,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:47,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641785936] [2021-10-06 21:26:47,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641785936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:47,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:47,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:26:47,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729329485] [2021-10-06 21:26:47,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:26:47,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:47,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:26:47,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:47,241 INFO L87 Difference]: Start difference. First operand 1862 states and 5130 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:54,407 INFO L93 Difference]: Finished difference Result 2274 states and 6117 transitions. [2021-10-06 21:26:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:26:54,408 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:26:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:54,412 INFO L225 Difference]: With dead ends: 2274 [2021-10-06 21:26:54,412 INFO L226 Difference]: Without dead ends: 2262 [2021-10-06 21:26:54,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3925.2ms TimeCoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:26:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-10-06 21:26:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1886. [2021-10-06 21:26:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 2.7453580901856762) internal successors, (5175), 1885 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 5175 transitions. [2021-10-06 21:26:54,444 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 5175 transitions. Word has length 38 [2021-10-06 21:26:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:54,445 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 5175 transitions. [2021-10-06 21:26:54,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 5175 transitions. [2021-10-06 21:26:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:26:54,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:54,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:54,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:54,649 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 [2021-10-06 21:26:54,650 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:54,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:54,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1298743669, now seen corresponding path program 29 times [2021-10-06 21:26:54,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:54,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687599233] [2021-10-06 21:26:54,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:54,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:54,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:54,653 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) [2021-10-06 21:26:54,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:26:55,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:26:55,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:55,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:26:55,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:55,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:55,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:55,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687599233] [2021-10-06 21:26:55,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687599233] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:55,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:55,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:26:55,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261843354] [2021-10-06 21:26:55,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:26:55,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:26:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:55,925 INFO L87 Difference]: Start difference. First operand 1886 states and 5175 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:07,792 INFO L93 Difference]: Finished difference Result 2962 states and 7792 transitions. [2021-10-06 21:27:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:27:07,792 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:27:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:07,798 INFO L225 Difference]: With dead ends: 2962 [2021-10-06 21:27:07,798 INFO L226 Difference]: Without dead ends: 2956 [2021-10-06 21:27:07,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 6166.4ms TimeCoverageRelationStatistics Valid=424, Invalid=1928, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:27:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-10-06 21:27:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1884. [2021-10-06 21:27:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 2.745618693574084) internal successors, (5170), 1883 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5170 transitions. [2021-10-06 21:27:07,832 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5170 transitions. Word has length 38 [2021-10-06 21:27:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:07,832 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 5170 transitions. [2021-10-06 21:27:07,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5170 transitions. [2021-10-06 21:27:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:27:07,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:07,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:07,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:08,035 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 [2021-10-06 21:27:08,036 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:27:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:08,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1252484999, now seen corresponding path program 30 times [2021-10-06 21:27:08,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:08,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431894992] [2021-10-06 21:27:08,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:08,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:08,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:08,039 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) [2021-10-06 21:27:08,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:27:08,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:27:08,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:08,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:27:08,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:08,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:09,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:09,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431894992] [2021-10-06 21:27:09,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431894992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:09,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:09,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:27:09,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428004239] [2021-10-06 21:27:09,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:27:09,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:27:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:27:09,509 INFO L87 Difference]: Start difference. First operand 1884 states and 5170 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:24,683 INFO L93 Difference]: Finished difference Result 2740 states and 7096 transitions. [2021-10-06 21:27:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:27:24,684 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:27:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:24,689 INFO L225 Difference]: With dead ends: 2740 [2021-10-06 21:27:24,689 INFO L226 Difference]: Without dead ends: 2712 [2021-10-06 21:27:24,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 8781.7ms TimeCoverageRelationStatistics Valid=469, Invalid=1693, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:27:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-10-06 21:27:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1594. [2021-10-06 21:27:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 2.684871311989956) internal successors, (4277), 1593 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 4277 transitions. [2021-10-06 21:27:24,750 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 4277 transitions. Word has length 38 [2021-10-06 21:27:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:24,751 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 4277 transitions. [2021-10-06 21:27:24,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 4277 transitions. [2021-10-06 21:27:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:27:24,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:24,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:24,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:24,953 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 [2021-10-06 21:27:24,954 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:27:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash -247986719, now seen corresponding path program 31 times [2021-10-06 21:27:24,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:24,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178733119] [2021-10-06 21:27:24,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:24,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:24,959 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) [2021-10-06 21:27:24,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:27:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:25,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:27:25,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:25,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:26,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:26,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178733119] [2021-10-06 21:27:26,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178733119] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:26,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:26,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:27:26,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121833077] [2021-10-06 21:27:26,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:27:26,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:26,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:27:26,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:26,366 INFO L87 Difference]: Start difference. First operand 1594 states and 4277 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:46,277 INFO L93 Difference]: Finished difference Result 2826 states and 7633 transitions. [2021-10-06 21:27:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:27:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 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 38 [2021-10-06 21:27:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:46,282 INFO L225 Difference]: With dead ends: 2826 [2021-10-06 21:27:46,282 INFO L226 Difference]: Without dead ends: 2724 [2021-10-06 21:27:46,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 12229.6ms TimeCoverageRelationStatistics Valid=623, Invalid=2457, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:27:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2021-10-06 21:27:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 1702. [2021-10-06 21:27:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.6919459141681363) internal successors, (4579), 1701 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4579 transitions. [2021-10-06 21:27:46,312 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4579 transitions. Word has length 38 [2021-10-06 21:27:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:46,313 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4579 transitions. [2021-10-06 21:27:46,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4579 transitions. [2021-10-06 21:27:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:27:46,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:46,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:46,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:46,516 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 [2021-10-06 21:27:46,516 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:27:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1602734071, now seen corresponding path program 32 times [2021-10-06 21:27:46,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:46,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377753529] [2021-10-06 21:27:46,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:46,519 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:46,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:46,520 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) [2021-10-06 21:27:46,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:27:46,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:27:46,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:46,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:27:46,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:47,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:47,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:47,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377753529] [2021-10-06 21:27:47,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377753529] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:47,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:47,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:27:47,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330074844] [2021-10-06 21:27:47,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:27:47,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:47,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:27:47,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:47,837 INFO L87 Difference]: Start difference. First operand 1702 states and 4579 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:03,509 INFO L93 Difference]: Finished difference Result 2910 states and 7879 transitions. [2021-10-06 21:28:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:28:03,510 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:28:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:03,515 INFO L225 Difference]: With dead ends: 2910 [2021-10-06 21:28:03,515 INFO L226 Difference]: Without dead ends: 2774 [2021-10-06 21:28:03,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 8820.5ms TimeCoverageRelationStatistics Valid=575, Invalid=2965, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:28:03,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-10-06 21:28:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1706. [2021-10-06 21:28:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 2.6903225806451614) internal successors, (4587), 1705 states have internal predecessors, (4587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 4587 transitions. [2021-10-06 21:28:03,550 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 4587 transitions. Word has length 38 [2021-10-06 21:28:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:03,550 INFO L470 AbstractCegarLoop]: Abstraction has 1706 states and 4587 transitions. [2021-10-06 21:28:03,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 4587 transitions. [2021-10-06 21:28:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:28:03,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:03,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:03,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:03,754 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 [2021-10-06 21:28:03,754 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:28:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash -227169719, now seen corresponding path program 33 times [2021-10-06 21:28:03,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:03,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517935035] [2021-10-06 21:28:03,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:03,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:03,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:03,758 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) [2021-10-06 21:28:03,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:28:04,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:28:04,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:04,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:04,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:04,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:05,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:05,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517935035] [2021-10-06 21:28:05,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517935035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:05,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:05,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:28:05,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198396136] [2021-10-06 21:28:05,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:05,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:05,155 INFO L87 Difference]: Start difference. First operand 1706 states and 4587 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:15,045 INFO L93 Difference]: Finished difference Result 2154 states and 5701 transitions. [2021-10-06 21:28:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:28:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:28:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:15,049 INFO L225 Difference]: With dead ends: 2154 [2021-10-06 21:28:15,049 INFO L226 Difference]: Without dead ends: 2050 [2021-10-06 21:28:15,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 5686.5ms TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:28:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2021-10-06 21:28:15,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1718. [2021-10-06 21:28:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1717 states have (on average 2.6831683168316833) internal successors, (4607), 1717 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 4607 transitions. [2021-10-06 21:28:15,080 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 4607 transitions. Word has length 38 [2021-10-06 21:28:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:15,081 INFO L470 AbstractCegarLoop]: Abstraction has 1718 states and 4607 transitions. [2021-10-06 21:28:15,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 4607 transitions. [2021-10-06 21:28:15,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:28:15,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:15,084 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:15,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:15,284 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 [2021-10-06 21:28:15,285 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:28:15,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:15,285 INFO L82 PathProgramCache]: Analyzing trace with hash -368785965, now seen corresponding path program 34 times [2021-10-06 21:28:15,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:15,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372325551] [2021-10-06 21:28:15,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:15,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:15,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:15,289 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) [2021-10-06 21:28:15,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:28:15,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:15,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:15,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:15,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:16,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:16,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:16,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372325551] [2021-10-06 21:28:16,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372325551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:16,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:16,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:28:16,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096145566] [2021-10-06 21:28:16,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:16,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:16,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:16,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:16,768 INFO L87 Difference]: Start difference. First operand 1718 states and 4607 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:36,072 INFO L93 Difference]: Finished difference Result 3294 states and 8849 transitions. [2021-10-06 21:28:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:28:36,074 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 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 38 [2021-10-06 21:28:36,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:36,080 INFO L225 Difference]: With dead ends: 3294 [2021-10-06 21:28:36,080 INFO L226 Difference]: Without dead ends: 3192 [2021-10-06 21:28:36,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 11751.8ms TimeCoverageRelationStatistics Valid=624, Invalid=2916, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:28:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2021-10-06 21:28:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 1718. [2021-10-06 21:28:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1717 states have (on average 2.682003494467094) internal successors, (4605), 1717 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 4605 transitions. [2021-10-06 21:28:36,116 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 4605 transitions. Word has length 38 [2021-10-06 21:28:36,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:36,116 INFO L470 AbstractCegarLoop]: Abstraction has 1718 states and 4605 transitions. [2021-10-06 21:28:36,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:36,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 4605 transitions. [2021-10-06 21:28:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:28:36,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:36,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:36,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:36,321 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 [2021-10-06 21:28:36,321 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:28:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:36,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1723533317, now seen corresponding path program 35 times [2021-10-06 21:28:36,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:36,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097992801] [2021-10-06 21:28:36,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:36,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:36,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:36,325 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) [2021-10-06 21:28:36,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:28:36,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:28:36,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:36,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:36,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:37,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:37,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:37,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097992801] [2021-10-06 21:28:37,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097992801] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:37,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:37,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:28:37,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538172473] [2021-10-06 21:28:37,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:37,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:37,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:37,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:37,730 INFO L87 Difference]: Start difference. First operand 1718 states and 4605 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:52,146 INFO L93 Difference]: Finished difference Result 2854 states and 7613 transitions. [2021-10-06 21:28:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:28:52,147 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:28:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:52,151 INFO L225 Difference]: With dead ends: 2854 [2021-10-06 21:28:52,152 INFO L226 Difference]: Without dead ends: 2754 [2021-10-06 21:28:52,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 7553.7ms TimeCoverageRelationStatistics Valid=530, Invalid=2892, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:28:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-10-06 21:28:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1710. [2021-10-06 21:28:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1709 states have (on average 2.6805149210064365) internal successors, (4581), 1709 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 4581 transitions. [2021-10-06 21:28:52,182 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 4581 transitions. Word has length 38 [2021-10-06 21:28:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:52,182 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 4581 transitions. [2021-10-06 21:28:52,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 4581 transitions. [2021-10-06 21:28:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:28:52,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:52,185 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:52,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:52,385 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 [2021-10-06 21:28:52,386 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:28:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:52,387 INFO L82 PathProgramCache]: Analyzing trace with hash 833939455, now seen corresponding path program 36 times [2021-10-06 21:28:52,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:52,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425474485] [2021-10-06 21:28:52,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:52,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:52,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:52,389 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) [2021-10-06 21:28:52,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:28:52,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:28:52,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:52,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:53,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:53,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:53,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425474485] [2021-10-06 21:28:53,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425474485] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:53,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:53,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:28:53,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518019346] [2021-10-06 21:28:53,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:53,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:53,861 INFO L87 Difference]: Start difference. First operand 1710 states and 4581 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:10,555 INFO L93 Difference]: Finished difference Result 2990 states and 7997 transitions. [2021-10-06 21:29:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:29:10,556 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 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 38 [2021-10-06 21:29:10,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:10,561 INFO L225 Difference]: With dead ends: 2990 [2021-10-06 21:29:10,561 INFO L226 Difference]: Without dead ends: 2894 [2021-10-06 21:29:10,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 9449.0ms TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:29:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2021-10-06 21:29:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1662. [2021-10-06 21:29:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 2.6604455147501507) internal successors, (4419), 1661 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 4419 transitions. [2021-10-06 21:29:10,592 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 4419 transitions. Word has length 38 [2021-10-06 21:29:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:10,592 INFO L470 AbstractCegarLoop]: Abstraction has 1662 states and 4419 transitions. [2021-10-06 21:29:10,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 4419 transitions. [2021-10-06 21:29:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:29:10,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:10,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:10,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:10,795 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 [2021-10-06 21:29:10,796 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:29:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:10,797 INFO L82 PathProgramCache]: Analyzing trace with hash -833831001, now seen corresponding path program 37 times [2021-10-06 21:29:10,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:10,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974704986] [2021-10-06 21:29:10,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:10,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:10,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:10,799 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) [2021-10-06 21:29:10,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:29:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:11,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:11,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:11,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:12,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:12,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974704986] [2021-10-06 21:29:12,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974704986] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:12,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:12,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:29:12,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499739437] [2021-10-06 21:29:12,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:12,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:12,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:12,236 INFO L87 Difference]: Start difference. First operand 1662 states and 4419 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:25,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:25,955 INFO L93 Difference]: Finished difference Result 2738 states and 7215 transitions. [2021-10-06 21:29:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:29:25,956 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:29:25,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:25,960 INFO L225 Difference]: With dead ends: 2738 [2021-10-06 21:29:25,961 INFO L226 Difference]: Without dead ends: 2728 [2021-10-06 21:29:25,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 7667.5ms TimeCoverageRelationStatistics Valid=424, Invalid=1556, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:29:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2021-10-06 21:29:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1756. [2021-10-06 21:29:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 2.660968660968661) internal successors, (4670), 1755 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 4670 transitions. [2021-10-06 21:29:25,989 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 4670 transitions. Word has length 38 [2021-10-06 21:29:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:25,989 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 4670 transitions. [2021-10-06 21:29:25,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:25,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 4670 transitions. [2021-10-06 21:29:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:29:25,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:25,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:26,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:26,192 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 [2021-10-06 21:29:26,193 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:29:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:26,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1208082885, now seen corresponding path program 38 times [2021-10-06 21:29:26,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:26,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23410587] [2021-10-06 21:29:26,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:26,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:26,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:26,197 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) [2021-10-06 21:29:26,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:29:26,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:29:26,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:26,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:26,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:27,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:27,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:27,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23410587] [2021-10-06 21:29:27,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23410587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:27,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:27,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:29:27,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935418192] [2021-10-06 21:29:27,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:27,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:27,568 INFO L87 Difference]: Start difference. First operand 1756 states and 4670 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:39,016 INFO L93 Difference]: Finished difference Result 2804 states and 7446 transitions. [2021-10-06 21:29:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:29:39,017 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:29:39,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:39,023 INFO L225 Difference]: With dead ends: 2804 [2021-10-06 21:29:39,023 INFO L226 Difference]: Without dead ends: 2798 [2021-10-06 21:29:39,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 5379.5ms TimeCoverageRelationStatistics Valid=416, Invalid=2034, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:29:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-10-06 21:29:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1774. [2021-10-06 21:29:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1773 states have (on average 2.6582064297800336) internal successors, (4713), 1773 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 4713 transitions. [2021-10-06 21:29:39,056 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 4713 transitions. Word has length 38 [2021-10-06 21:29:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:39,056 INFO L470 AbstractCegarLoop]: Abstraction has 1774 states and 4713 transitions. [2021-10-06 21:29:39,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 4713 transitions. [2021-10-06 21:29:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:29:39,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:39,059 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:39,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:39,260 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 [2021-10-06 21:29:39,260 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:29:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash 795401063, now seen corresponding path program 39 times [2021-10-06 21:29:39,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:39,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095391426] [2021-10-06 21:29:39,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:39,263 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:39,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:39,264 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) [2021-10-06 21:29:39,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:29:39,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:29:39,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:39,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:39,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:40,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:40,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:40,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095391426] [2021-10-06 21:29:40,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095391426] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:40,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:40,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:29:40,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292267937] [2021-10-06 21:29:40,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:40,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:40,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:40,692 INFO L87 Difference]: Start difference. First operand 1774 states and 4713 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:57,361 INFO L93 Difference]: Finished difference Result 3270 states and 8691 transitions. [2021-10-06 21:29:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:29:57,363 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:29:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:57,369 INFO L225 Difference]: With dead ends: 3270 [2021-10-06 21:29:57,370 INFO L226 Difference]: Without dead ends: 3258 [2021-10-06 21:29:57,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 9979.4ms TimeCoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:29:57,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2021-10-06 21:29:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 1770. [2021-10-06 21:29:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1769 states have (on average 2.659694742792538) internal successors, (4705), 1769 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 4705 transitions. [2021-10-06 21:29:57,408 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 4705 transitions. Word has length 38 [2021-10-06 21:29:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:57,408 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 4705 transitions. [2021-10-06 21:29:57,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 4705 transitions. [2021-10-06 21:29:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:29:57,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:57,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:57,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:57,614 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 [2021-10-06 21:29:57,614 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:29:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:57,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1515260933, now seen corresponding path program 40 times [2021-10-06 21:29:57,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:57,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582628793] [2021-10-06 21:29:57,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:57,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:57,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:57,618 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) [2021-10-06 21:29:57,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:29:58,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:58,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:58,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:58,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:58,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:59,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:59,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582628793] [2021-10-06 21:29:59,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582628793] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:59,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:59,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:29:59,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414636459] [2021-10-06 21:29:59,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:59,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:59,123 INFO L87 Difference]: Start difference. First operand 1770 states and 4705 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:10,446 INFO L93 Difference]: Finished difference Result 2854 states and 7495 transitions. [2021-10-06 21:30:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:30:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:30:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:10,451 INFO L225 Difference]: With dead ends: 2854 [2021-10-06 21:30:10,452 INFO L226 Difference]: Without dead ends: 2848 [2021-10-06 21:30:10,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 5992.7ms TimeCoverageRelationStatistics Valid=404, Invalid=1852, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:30:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-10-06 21:30:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1778. [2021-10-06 21:30:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.657850309510411) internal successors, (4723), 1777 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4723 transitions. [2021-10-06 21:30:10,485 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4723 transitions. Word has length 38 [2021-10-06 21:30:10,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:10,486 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 4723 transitions. [2021-10-06 21:30:10,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4723 transitions. [2021-10-06 21:30:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:30:10,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:10,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:10,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:10,690 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 [2021-10-06 21:30:10,690 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:30:10,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:10,691 INFO L82 PathProgramCache]: Analyzing trace with hash 488223015, now seen corresponding path program 41 times [2021-10-06 21:30:10,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:10,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458292314] [2021-10-06 21:30:10,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:10,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:10,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:10,693 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) [2021-10-06 21:30:10,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:30:11,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:30:11,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:11,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:11,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:11,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:12,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:12,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458292314] [2021-10-06 21:30:12,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458292314] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:12,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:12,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:30:12,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751342414] [2021-10-06 21:30:12,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:12,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:12,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:12,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:12,279 INFO L87 Difference]: Start difference. First operand 1778 states and 4723 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:27,658 INFO L93 Difference]: Finished difference Result 2858 states and 7457 transitions. [2021-10-06 21:30:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:30:27,659 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:30:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:27,665 INFO L225 Difference]: With dead ends: 2858 [2021-10-06 21:30:27,665 INFO L226 Difference]: Without dead ends: 2848 [2021-10-06 21:30:27,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 8762.4ms TimeCoverageRelationStatistics Valid=447, Invalid=1623, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:30:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-10-06 21:30:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1720. [2021-10-06 21:30:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 2.642233856893543) internal successors, (4542), 1719 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 4542 transitions. [2021-10-06 21:30:27,694 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 4542 transitions. Word has length 38 [2021-10-06 21:30:27,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:27,694 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 4542 transitions. [2021-10-06 21:30:27,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 4542 transitions. [2021-10-06 21:30:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:30:27,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:27,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:27,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:27,897 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 [2021-10-06 21:30:27,897 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:30:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash -951511461, now seen corresponding path program 42 times [2021-10-06 21:30:27,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:27,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122717803] [2021-10-06 21:30:27,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:27,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:27,900 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) [2021-10-06 21:30:27,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:30:28,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:30:28,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:28,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:28,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:28,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:29,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:29,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122717803] [2021-10-06 21:30:29,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122717803] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:29,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:29,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:30:29,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256225626] [2021-10-06 21:30:29,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:29,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:29,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:29,393 INFO L87 Difference]: Start difference. First operand 1720 states and 4542 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:36,347 INFO L93 Difference]: Finished difference Result 1814 states and 4644 transitions. [2021-10-06 21:30:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:30:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:30:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:36,352 INFO L225 Difference]: With dead ends: 1814 [2021-10-06 21:30:36,352 INFO L226 Difference]: Without dead ends: 1784 [2021-10-06 21:30:36,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3960.7ms TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:30:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-10-06 21:30:36,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1476. [2021-10-06 21:30:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 2.5796610169491525) internal successors, (3805), 1475 states have internal predecessors, (3805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 3805 transitions. [2021-10-06 21:30:36,376 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 3805 transitions. Word has length 38 [2021-10-06 21:30:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:36,376 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 3805 transitions. [2021-10-06 21:30:36,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 3805 transitions. [2021-10-06 21:30:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:30:36,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:36,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:36,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:36,579 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 [2021-10-06 21:30:36,580 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:30:36,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:36,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2051518311, now seen corresponding path program 43 times [2021-10-06 21:30:36,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:36,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152254333] [2021-10-06 21:30:36,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:36,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:36,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:36,583 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) [2021-10-06 21:30:36,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:30:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:37,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:30:37,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:37,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:37,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:37,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152254333] [2021-10-06 21:30:37,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152254333] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:37,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:37,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:30:37,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612277044] [2021-10-06 21:30:37,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:30:37,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:30:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:30:37,682 INFO L87 Difference]: Start difference. First operand 1476 states and 3805 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:40,167 INFO L93 Difference]: Finished difference Result 1826 states and 4685 transitions. [2021-10-06 21:30:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:30:40,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 38 [2021-10-06 21:30:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:40,171 INFO L225 Difference]: With dead ends: 1826 [2021-10-06 21:30:40,171 INFO L226 Difference]: Without dead ends: 1826 [2021-10-06 21:30:40,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 907.2ms TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:30:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2021-10-06 21:30:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1520. [2021-10-06 21:30:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 2.574720210664911) internal successors, (3911), 1519 states have internal predecessors, (3911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 3911 transitions. [2021-10-06 21:30:40,193 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 3911 transitions. Word has length 38 [2021-10-06 21:30:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:40,193 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 3911 transitions. [2021-10-06 21:30:40,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 3911 transitions. [2021-10-06 21:30:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:30:40,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:40,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:40,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:40,399 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 [2021-10-06 21:30:40,400 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:30:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:40,401 INFO L82 PathProgramCache]: Analyzing trace with hash 691530545, now seen corresponding path program 44 times [2021-10-06 21:30:40,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:40,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22394840] [2021-10-06 21:30:40,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:40,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:40,404 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) [2021-10-06 21:30:40,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:30:41,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:30:41,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:41,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:41,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:41,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:41,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:41,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22394840] [2021-10-06 21:30:41,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22394840] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:41,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:41,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:30:41,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378915147] [2021-10-06 21:30:41,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:41,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:41,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:41,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:41,784 INFO L87 Difference]: Start difference. First operand 1520 states and 3911 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:55,163 INFO L93 Difference]: Finished difference Result 2726 states and 6845 transitions. [2021-10-06 21:30:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:30:55,164 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:30:55,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:55,168 INFO L225 Difference]: With dead ends: 2726 [2021-10-06 21:30:55,168 INFO L226 Difference]: Without dead ends: 2672 [2021-10-06 21:30:55,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 6648.9ms TimeCoverageRelationStatistics Valid=693, Invalid=3339, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:30:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-10-06 21:30:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1622. [2021-10-06 21:30:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 2.5731030228254164) internal successors, (4171), 1621 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 4171 transitions. [2021-10-06 21:30:55,199 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 4171 transitions. Word has length 38 [2021-10-06 21:30:55,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:55,199 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 4171 transitions. [2021-10-06 21:30:55,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 4171 transitions. [2021-10-06 21:30:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:30:55,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:55,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:55,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:55,403 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 [2021-10-06 21:30:55,404 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:30:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:55,404 INFO L82 PathProgramCache]: Analyzing trace with hash -895533289, now seen corresponding path program 45 times [2021-10-06 21:30:55,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:55,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867116115] [2021-10-06 21:30:55,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:30:55,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:55,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:55,407 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) [2021-10-06 21:30:55,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:30:56,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:30:56,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:56,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:56,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:56,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:56,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867116115] [2021-10-06 21:30:56,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867116115] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:56,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:56,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:30:56,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328567807] [2021-10-06 21:30:56,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:56,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:56,790 INFO L87 Difference]: Start difference. First operand 1622 states and 4171 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:06,995 INFO L93 Difference]: Finished difference Result 2482 states and 6216 transitions. [2021-10-06 21:31:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:31:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:31:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:07,000 INFO L225 Difference]: With dead ends: 2482 [2021-10-06 21:31:07,001 INFO L226 Difference]: Without dead ends: 2438 [2021-10-06 21:31:07,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 4655.4ms TimeCoverageRelationStatistics Valid=532, Invalid=3008, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:31:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-10-06 21:31:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1618. [2021-10-06 21:31:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 2.5683364254792824) internal successors, (4153), 1617 states have internal predecessors, (4153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 4153 transitions. [2021-10-06 21:31:07,034 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 4153 transitions. Word has length 38 [2021-10-06 21:31:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:07,034 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 4153 transitions. [2021-10-06 21:31:07,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 4153 transitions. [2021-10-06 21:31:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:31:07,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:07,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:07,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:07,237 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 [2021-10-06 21:31:07,238 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:31:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:07,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1804737199, now seen corresponding path program 46 times [2021-10-06 21:31:07,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:07,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357037656] [2021-10-06 21:31:07,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:07,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:07,242 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) [2021-10-06 21:31:07,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:31:07,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:07,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:07,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:31:07,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:08,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:08,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:08,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357037656] [2021-10-06 21:31:08,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357037656] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:08,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:08,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:31:08,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971247031] [2021-10-06 21:31:08,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:08,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:08,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:08,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:08,701 INFO L87 Difference]: Start difference. First operand 1618 states and 4153 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:16,216 INFO L93 Difference]: Finished difference Result 2076 states and 5154 transitions. [2021-10-06 21:31:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:31:16,217 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:31:16,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:16,221 INFO L225 Difference]: With dead ends: 2076 [2021-10-06 21:31:16,221 INFO L226 Difference]: Without dead ends: 2012 [2021-10-06 21:31:16,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 3932.4ms TimeCoverageRelationStatistics Valid=421, Invalid=2129, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:31:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2021-10-06 21:31:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1612. [2021-10-06 21:31:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 2.564866542520174) internal successors, (4132), 1611 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 4132 transitions. [2021-10-06 21:31:16,246 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 4132 transitions. Word has length 38 [2021-10-06 21:31:16,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:16,247 INFO L470 AbstractCegarLoop]: Abstraction has 1612 states and 4132 transitions. [2021-10-06 21:31:16,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 4132 transitions. [2021-10-06 21:31:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:31:16,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:16,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:16,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:16,451 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 [2021-10-06 21:31:16,452 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:31:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash 288963351, now seen corresponding path program 47 times [2021-10-06 21:31:16,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:16,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257678878] [2021-10-06 21:31:16,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:16,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:16,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:16,455 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) [2021-10-06 21:31:16,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:31:17,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:31:17,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:17,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:31:17,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:17,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:17,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:17,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257678878] [2021-10-06 21:31:17,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257678878] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:17,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:17,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:31:17,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031359835] [2021-10-06 21:31:17,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:17,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:17,871 INFO L87 Difference]: Start difference. First operand 1612 states and 4132 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:22,068 INFO L93 Difference]: Finished difference Result 1906 states and 4883 transitions. [2021-10-06 21:31:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:31:22,069 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:31:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:22,072 INFO L225 Difference]: With dead ends: 1906 [2021-10-06 21:31:22,072 INFO L226 Difference]: Without dead ends: 1886 [2021-10-06 21:31:22,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2084.4ms TimeCoverageRelationStatistics Valid=284, Invalid=1522, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:31:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-10-06 21:31:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1608. [2021-10-06 21:31:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 2.565650280024891) internal successors, (4123), 1607 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 4123 transitions. [2021-10-06 21:31:22,095 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 4123 transitions. Word has length 38 [2021-10-06 21:31:22,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:22,096 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 4123 transitions. [2021-10-06 21:31:22,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 4123 transitions. [2021-10-06 21:31:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:31:22,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:22,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:22,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:22,298 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 [2021-10-06 21:31:22,299 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:31:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:22,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1504413993, now seen corresponding path program 48 times [2021-10-06 21:31:22,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:22,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309243049] [2021-10-06 21:31:22,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:22,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:22,302 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) [2021-10-06 21:31:22,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:31:22,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:31:22,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:22,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:31:22,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:23,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:23,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:23,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309243049] [2021-10-06 21:31:23,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309243049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:23,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:23,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:31:23,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392096915] [2021-10-06 21:31:23,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:31:23,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:31:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:31:23,460 INFO L87 Difference]: Start difference. First operand 1608 states and 4123 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:27,736 INFO L93 Difference]: Finished difference Result 2030 states and 5168 transitions. [2021-10-06 21:31:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:31:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 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 38 [2021-10-06 21:31:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:27,740 INFO L225 Difference]: With dead ends: 2030 [2021-10-06 21:31:27,740 INFO L226 Difference]: Without dead ends: 2030 [2021-10-06 21:31:27,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1887.2ms TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:31:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-10-06 21:31:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1648. [2021-10-06 21:31:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1647 states have (on average 2.5737704918032787) internal successors, (4239), 1647 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 4239 transitions. [2021-10-06 21:31:27,764 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 4239 transitions. Word has length 38 [2021-10-06 21:31:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:27,764 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 4239 transitions. [2021-10-06 21:31:27,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 4239 transitions. [2021-10-06 21:31:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:31:27,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:27,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:27,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:27,967 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 [2021-10-06 21:31:27,967 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:31:27,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:27,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1430565537, now seen corresponding path program 49 times [2021-10-06 21:31:27,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:27,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366659227] [2021-10-06 21:31:27,970 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:31:27,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:27,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:27,971 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) [2021-10-06 21:31:27,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:31:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:31:28,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:31:28,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:28,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:29,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:29,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366659227] [2021-10-06 21:31:29,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366659227] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:29,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:29,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:31:29,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253286035] [2021-10-06 21:31:29,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:29,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:29,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:29,502 INFO L87 Difference]: Start difference. First operand 1648 states and 4239 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:45,254 INFO L93 Difference]: Finished difference Result 3056 states and 7548 transitions. [2021-10-06 21:31:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:31:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:31:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:45,260 INFO L225 Difference]: With dead ends: 3056 [2021-10-06 21:31:45,260 INFO L226 Difference]: Without dead ends: 3002 [2021-10-06 21:31:45,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 8093.1ms TimeCoverageRelationStatistics Valid=641, Invalid=2439, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:31:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-10-06 21:31:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1732. [2021-10-06 21:31:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 2.5782784517619874) internal successors, (4463), 1731 states have internal predecessors, (4463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 4463 transitions. [2021-10-06 21:31:45,293 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 4463 transitions. Word has length 38 [2021-10-06 21:31:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:45,293 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 4463 transitions. [2021-10-06 21:31:45,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 4463 transitions. [2021-10-06 21:31:45,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:31:45,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:45,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:45,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:45,496 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 [2021-10-06 21:31:45,497 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:31:45,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:45,497 INFO L82 PathProgramCache]: Analyzing trace with hash -156498297, now seen corresponding path program 50 times [2021-10-06 21:31:45,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:45,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410544279] [2021-10-06 21:31:45,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:31:45,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:45,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:45,501 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) [2021-10-06 21:31:45,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:31:46,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:31:46,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:46,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:31:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:46,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:47,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:47,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410544279] [2021-10-06 21:31:47,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410544279] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:47,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:47,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:31:47,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094605913] [2021-10-06 21:31:47,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:47,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:47,038 INFO L87 Difference]: Start difference. First operand 1732 states and 4463 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:59,389 INFO L93 Difference]: Finished difference Result 3096 states and 7645 transitions. [2021-10-06 21:31:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:31:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:31:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:59,396 INFO L225 Difference]: With dead ends: 3096 [2021-10-06 21:31:59,396 INFO L226 Difference]: Without dead ends: 3052 [2021-10-06 21:31:59,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 6099.7ms TimeCoverageRelationStatistics Valid=539, Invalid=2653, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:31:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2021-10-06 21:31:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 1696. [2021-10-06 21:31:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1695 states have (on average 2.576401179941003) internal successors, (4367), 1695 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 4367 transitions. [2021-10-06 21:31:59,431 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 4367 transitions. Word has length 38 [2021-10-06 21:31:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:59,431 INFO L470 AbstractCegarLoop]: Abstraction has 1696 states and 4367 transitions. [2021-10-06 21:31:59,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 4367 transitions. [2021-10-06 21:31:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:31:59,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:59,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:59,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:59,635 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 [2021-10-06 21:31:59,636 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:31:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1751195105, now seen corresponding path program 51 times [2021-10-06 21:31:59,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:59,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702350108] [2021-10-06 21:31:59,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:31:59,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:59,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:59,639 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) [2021-10-06 21:31:59,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:32:00,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:32:00,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:00,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:00,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:00,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:01,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:01,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702350108] [2021-10-06 21:32:01,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702350108] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:01,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:01,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:32:01,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438522539] [2021-10-06 21:32:01,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:01,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:01,204 INFO L87 Difference]: Start difference. First operand 1696 states and 4367 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:09,613 INFO L93 Difference]: Finished difference Result 2170 states and 5406 transitions. [2021-10-06 21:32:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:32:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:32:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:09,618 INFO L225 Difference]: With dead ends: 2170 [2021-10-06 21:32:09,618 INFO L226 Difference]: Without dead ends: 2106 [2021-10-06 21:32:09,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 4294.1ms TimeCoverageRelationStatistics Valid=391, Invalid=1771, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:32:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-10-06 21:32:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1636. [2021-10-06 21:32:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 2.5663608562691134) internal successors, (4196), 1635 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 4196 transitions. [2021-10-06 21:32:09,642 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 4196 transitions. Word has length 38 [2021-10-06 21:32:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:09,643 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 4196 transitions. [2021-10-06 21:32:09,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 4196 transitions. [2021-10-06 21:32:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:32:09,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:09,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:09,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-06 21:32:09,862 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 [2021-10-06 21:32:09,863 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:32:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1937445377, now seen corresponding path program 52 times [2021-10-06 21:32:09,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:09,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724500234] [2021-10-06 21:32:09,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:32:09,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:09,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:09,867 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) [2021-10-06 21:32:09,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:32:10,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:32:10,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:10,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:10,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:10,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:11,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:11,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724500234] [2021-10-06 21:32:11,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724500234] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:11,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:11,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:32:11,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245407763] [2021-10-06 21:32:11,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:11,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:11,557 INFO L87 Difference]: Start difference. First operand 1636 states and 4196 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:27,417 INFO L93 Difference]: Finished difference Result 3008 states and 7505 transitions. [2021-10-06 21:32:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:32:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:32:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:27,423 INFO L225 Difference]: With dead ends: 3008 [2021-10-06 21:32:27,423 INFO L226 Difference]: Without dead ends: 2990 [2021-10-06 21:32:27,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 9278.3ms TimeCoverageRelationStatistics Valid=670, Invalid=3112, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:32:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-10-06 21:32:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1636. [2021-10-06 21:32:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 2.563914373088685) internal successors, (4192), 1635 states have internal predecessors, (4192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 4192 transitions. [2021-10-06 21:32:27,453 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 4192 transitions. Word has length 38 [2021-10-06 21:32:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:27,454 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 4192 transitions. [2021-10-06 21:32:27,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 4192 transitions. [2021-10-06 21:32:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:32:27,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:27,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:27,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:27,657 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 [2021-10-06 21:32:27,658 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:32:27,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:27,659 INFO L82 PathProgramCache]: Analyzing trace with hash 350381543, now seen corresponding path program 53 times [2021-10-06 21:32:27,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:27,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615831545] [2021-10-06 21:32:27,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:32:27,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:27,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:27,662 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) [2021-10-06 21:32:27,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:32:28,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:32:28,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:28,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:28,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:28,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:29,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:29,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615831545] [2021-10-06 21:32:29,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615831545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:29,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:29,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:32:29,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452428242] [2021-10-06 21:32:29,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:29,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:29,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:29,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:29,226 INFO L87 Difference]: Start difference. First operand 1636 states and 4192 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:41,370 INFO L93 Difference]: Finished difference Result 2890 states and 7285 transitions. [2021-10-06 21:32:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:32:41,371 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:32:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:41,377 INFO L225 Difference]: With dead ends: 2890 [2021-10-06 21:32:41,377 INFO L226 Difference]: Without dead ends: 2878 [2021-10-06 21:32:41,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 6223.0ms TimeCoverageRelationStatistics Valid=538, Invalid=3002, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:32:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2021-10-06 21:32:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1632. [2021-10-06 21:32:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 2.5646842427958307) internal successors, (4183), 1631 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 4183 transitions. [2021-10-06 21:32:41,408 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 4183 transitions. Word has length 38 [2021-10-06 21:32:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:41,409 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 4183 transitions. [2021-10-06 21:32:41,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 4183 transitions. [2021-10-06 21:32:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:32:41,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:41,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:41,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:41,620 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 [2021-10-06 21:32:41,621 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:32:41,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:41,621 INFO L82 PathProgramCache]: Analyzing trace with hash -852613009, now seen corresponding path program 54 times [2021-10-06 21:32:41,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:41,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626506584] [2021-10-06 21:32:41,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:32:41,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:41,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:41,624 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) [2021-10-06 21:32:41,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:32:42,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:32:42,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:42,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:42,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:42,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:43,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:43,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626506584] [2021-10-06 21:32:43,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626506584] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:43,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:43,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:32:43,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862106668] [2021-10-06 21:32:43,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:43,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:43,292 INFO L87 Difference]: Start difference. First operand 1632 states and 4183 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:57,491 INFO L93 Difference]: Finished difference Result 2866 states and 7152 transitions. [2021-10-06 21:32:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:32:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 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 38 [2021-10-06 21:32:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:57,497 INFO L225 Difference]: With dead ends: 2866 [2021-10-06 21:32:57,497 INFO L226 Difference]: Without dead ends: 2848 [2021-10-06 21:32:57,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 8119.1ms TimeCoverageRelationStatistics Valid=559, Invalid=2303, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:32:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-10-06 21:32:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1636. [2021-10-06 21:32:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 2.561467889908257) internal successors, (4188), 1635 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 4188 transitions. [2021-10-06 21:32:57,528 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 4188 transitions. Word has length 38 [2021-10-06 21:32:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:57,528 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 4188 transitions. [2021-10-06 21:32:57,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 4188 transitions. [2021-10-06 21:32:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:32:57,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:57,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:57,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:57,732 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 [2021-10-06 21:32:57,733 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:32:57,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:57,734 INFO L82 PathProgramCache]: Analyzing trace with hash -959399403, now seen corresponding path program 55 times [2021-10-06 21:32:57,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:57,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925286534] [2021-10-06 21:32:57,735 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:32:57,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:57,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:57,736 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) [2021-10-06 21:32:57,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:32:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:58,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:58,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:58,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:59,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:59,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925286534] [2021-10-06 21:32:59,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925286534] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:59,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:59,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:32:59,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525945473] [2021-10-06 21:32:59,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:59,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:59,339 INFO L87 Difference]: Start difference. First operand 1636 states and 4188 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:14,016 INFO L93 Difference]: Finished difference Result 2816 states and 7040 transitions. [2021-10-06 21:33:14,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:33:14,017 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:33:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:14,022 INFO L225 Difference]: With dead ends: 2816 [2021-10-06 21:33:14,022 INFO L226 Difference]: Without dead ends: 2804 [2021-10-06 21:33:14,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 8440.6ms TimeCoverageRelationStatistics Valid=494, Invalid=2158, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:33:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-10-06 21:33:14,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1632. [2021-10-06 21:33:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 2.5622317596566524) internal successors, (4179), 1631 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 4179 transitions. [2021-10-06 21:33:14,053 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 4179 transitions. Word has length 38 [2021-10-06 21:33:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:14,054 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 4179 transitions. [2021-10-06 21:33:14,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 4179 transitions. [2021-10-06 21:33:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:33:14,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:14,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:14,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:14,257 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 [2021-10-06 21:33:14,258 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:33:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:14,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1862104639, now seen corresponding path program 56 times [2021-10-06 21:33:14,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:14,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170735852] [2021-10-06 21:33:14,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:33:14,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:14,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:14,261 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) [2021-10-06 21:33:14,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:33:15,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:33:15,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:15,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:33:15,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:15,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:15,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:15,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170735852] [2021-10-06 21:33:15,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170735852] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:15,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:15,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:33:15,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503563987] [2021-10-06 21:33:15,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:15,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:15,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:15,895 INFO L87 Difference]: Start difference. First operand 1632 states and 4179 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:26,928 INFO L93 Difference]: Finished difference Result 2856 states and 7208 transitions. [2021-10-06 21:33:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:33:26,929 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:33:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:26,934 INFO L225 Difference]: With dead ends: 2856 [2021-10-06 21:33:26,934 INFO L226 Difference]: Without dead ends: 2850 [2021-10-06 21:33:26,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 5119.5ms TimeCoverageRelationStatistics Valid=429, Invalid=2541, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:33:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2021-10-06 21:33:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1634. [2021-10-06 21:33:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 2.5609308022045316) internal successors, (4182), 1633 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 4182 transitions. [2021-10-06 21:33:26,965 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 4182 transitions. Word has length 38 [2021-10-06 21:33:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:26,965 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 4182 transitions. [2021-10-06 21:33:26,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 4182 transitions. [2021-10-06 21:33:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:33:26,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:26,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:26,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:27,186 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 [2021-10-06 21:33:27,187 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:33:27,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:27,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1908363309, now seen corresponding path program 57 times [2021-10-06 21:33:27,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:27,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551624175] [2021-10-06 21:33:27,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:33:27,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:27,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:27,190 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) [2021-10-06 21:33:27,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:33:27,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:33:27,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:27,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:33:27,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:28,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:28,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:28,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551624175] [2021-10-06 21:33:28,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551624175] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:28,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:28,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:33:28,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194748651] [2021-10-06 21:33:28,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:28,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:28,799 INFO L87 Difference]: Start difference. First operand 1634 states and 4182 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:45,722 INFO L93 Difference]: Finished difference Result 2962 states and 7398 transitions. [2021-10-06 21:33:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:33:45,723 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:33:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:45,729 INFO L225 Difference]: With dead ends: 2962 [2021-10-06 21:33:45,729 INFO L226 Difference]: Without dead ends: 2948 [2021-10-06 21:33:45,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 9410.9ms TimeCoverageRelationStatistics Valid=605, Invalid=2935, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:33:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2021-10-06 21:33:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1628. [2021-10-06 21:33:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 2.56299938537185) internal successors, (4170), 1627 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 4170 transitions. [2021-10-06 21:33:45,763 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 4170 transitions. Word has length 38 [2021-10-06 21:33:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:45,764 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 4170 transitions. [2021-10-06 21:33:45,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 4170 transitions. [2021-10-06 21:33:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:33:45,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:45,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:45,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:45,967 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 [2021-10-06 21:33:45,967 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:33:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash -560149503, now seen corresponding path program 58 times [2021-10-06 21:33:45,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:45,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105893574] [2021-10-06 21:33:45,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:33:45,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:45,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:45,971 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) [2021-10-06 21:33:45,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:33:46,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:33:46,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:46,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:33:46,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:47,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:47,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:47,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105893574] [2021-10-06 21:33:47,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105893574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:47,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:47,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:33:47,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582590425] [2021-10-06 21:33:47,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:47,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:47,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:47,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:47,527 INFO L87 Difference]: Start difference. First operand 1628 states and 4170 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:55,287 INFO L93 Difference]: Finished difference Result 2026 states and 5069 transitions. [2021-10-06 21:33:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:33:55,289 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:33:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:55,293 INFO L225 Difference]: With dead ends: 2026 [2021-10-06 21:33:55,293 INFO L226 Difference]: Without dead ends: 2002 [2021-10-06 21:33:55,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 3758.9ms TimeCoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:33:55,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2021-10-06 21:33:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1634. [2021-10-06 21:33:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 2.5590936925903245) internal successors, (4179), 1633 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 4179 transitions. [2021-10-06 21:33:55,321 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 4179 transitions. Word has length 38 [2021-10-06 21:33:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:55,322 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 4179 transitions. [2021-10-06 21:33:55,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 4179 transitions. [2021-10-06 21:33:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:33:55,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:55,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:55,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:55,528 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 [2021-10-06 21:33:55,528 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:33:55,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash -328856153, now seen corresponding path program 59 times [2021-10-06 21:33:55,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:55,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13794362] [2021-10-06 21:33:55,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:33:55,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:55,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:55,532 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) [2021-10-06 21:33:55,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:33:56,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:33:56,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:56,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:33:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:56,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:57,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:57,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13794362] [2021-10-06 21:33:57,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13794362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:57,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:57,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:33:57,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286250128] [2021-10-06 21:33:57,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:57,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:57,094 INFO L87 Difference]: Start difference. First operand 1634 states and 4179 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:08,357 INFO L93 Difference]: Finished difference Result 2878 states and 7129 transitions. [2021-10-06 21:34:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:34:08,358 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:34:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:08,363 INFO L225 Difference]: With dead ends: 2878 [2021-10-06 21:34:08,364 INFO L226 Difference]: Without dead ends: 2866 [2021-10-06 21:34:08,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 5369.7ms TimeCoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:34:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-10-06 21:34:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1636. [2021-10-06 21:34:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 2.5577981651376147) internal successors, (4182), 1635 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 4182 transitions. [2021-10-06 21:34:08,395 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 4182 transitions. Word has length 38 [2021-10-06 21:34:08,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:08,395 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 4182 transitions. [2021-10-06 21:34:08,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 4182 transitions. [2021-10-06 21:34:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:34:08,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:08,398 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:08,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-10-06 21:34:08,598 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 [2021-10-06 21:34:08,598 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:08,599 INFO L82 PathProgramCache]: Analyzing trace with hash -282597483, now seen corresponding path program 60 times [2021-10-06 21:34:08,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:08,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105783992] [2021-10-06 21:34:08,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:34:08,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:08,602 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) [2021-10-06 21:34:08,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:34:09,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:34:09,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:09,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:34:09,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:09,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:10,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:10,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105783992] [2021-10-06 21:34:10,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105783992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:10,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:10,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:34:10,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418069235] [2021-10-06 21:34:10,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:10,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:10,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:10,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:10,214 INFO L87 Difference]: Start difference. First operand 1636 states and 4182 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:25,656 INFO L93 Difference]: Finished difference Result 2866 states and 7086 transitions. [2021-10-06 21:34:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:34:25,657 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:34:25,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:25,662 INFO L225 Difference]: With dead ends: 2866 [2021-10-06 21:34:25,662 INFO L226 Difference]: Without dead ends: 2822 [2021-10-06 21:34:25,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 8331.3ms TimeCoverageRelationStatistics Valid=574, Invalid=2288, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:34:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-10-06 21:34:25,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1616. [2021-10-06 21:34:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 2.561609907120743) internal successors, (4137), 1615 states have internal predecessors, (4137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 4137 transitions. [2021-10-06 21:34:25,694 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 4137 transitions. Word has length 38 [2021-10-06 21:34:25,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:25,695 INFO L470 AbstractCegarLoop]: Abstraction has 1616 states and 4137 transitions. [2021-10-06 21:34:25,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 4137 transitions. [2021-10-06 21:34:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:34:25,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:25,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:25,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-06 21:34:25,898 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 [2021-10-06 21:34:25,899 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:25,900 INFO L82 PathProgramCache]: Analyzing trace with hash -870031505, now seen corresponding path program 61 times [2021-10-06 21:34:25,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:25,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222246676] [2021-10-06 21:34:25,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:34:25,901 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:25,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:25,902 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:25,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:34:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:26,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:34:26,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:27,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:27,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:27,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222246676] [2021-10-06 21:34:27,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222246676] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:27,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:27,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:34:27,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098068769] [2021-10-06 21:34:27,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:27,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:27,525 INFO L87 Difference]: Start difference. First operand 1616 states and 4137 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:31,186 INFO L93 Difference]: Finished difference Result 1752 states and 4450 transitions. [2021-10-06 21:34:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:34:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:34:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:31,189 INFO L225 Difference]: With dead ends: 1752 [2021-10-06 21:34:31,189 INFO L226 Difference]: Without dead ends: 1738 [2021-10-06 21:34:31,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1443.1ms TimeCoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:34:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-10-06 21:34:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1618. [2021-10-06 21:34:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 2.560296846011132) internal successors, (4140), 1617 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 4140 transitions. [2021-10-06 21:34:31,212 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 4140 transitions. Word has length 38 [2021-10-06 21:34:31,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:31,213 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 4140 transitions. [2021-10-06 21:34:31,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:31,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 4140 transitions. [2021-10-06 21:34:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:34:31,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:31,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:31,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:31,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:31,416 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:31,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:31,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1231273249, now seen corresponding path program 62 times [2021-10-06 21:34:31,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:31,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301852629] [2021-10-06 21:34:31,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:34:31,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:31,419 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:31,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:34:32,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:34:32,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:32,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:34:32,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:32,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:33,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:33,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301852629] [2021-10-06 21:34:33,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301852629] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:33,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:33,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:34:33,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088601274] [2021-10-06 21:34:33,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:33,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:33,033 INFO L87 Difference]: Start difference. First operand 1618 states and 4140 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:39,688 INFO L93 Difference]: Finished difference Result 1970 states and 4947 transitions. [2021-10-06 21:34:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:34:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:34:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:39,691 INFO L225 Difference]: With dead ends: 1970 [2021-10-06 21:34:39,692 INFO L226 Difference]: Without dead ends: 1946 [2021-10-06 21:34:39,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3130.6ms TimeCoverageRelationStatistics Valid=304, Invalid=1588, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:34:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2021-10-06 21:34:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1618. [2021-10-06 21:34:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 2.556586270871985) internal successors, (4134), 1617 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 4134 transitions. [2021-10-06 21:34:39,715 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 4134 transitions. Word has length 38 [2021-10-06 21:34:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:39,715 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 4134 transitions. [2021-10-06 21:34:39,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 4134 transitions. [2021-10-06 21:34:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:34:39,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:39,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:39,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:39,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:39,918 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:39,919 INFO L82 PathProgramCache]: Analyzing trace with hash -73205185, now seen corresponding path program 63 times [2021-10-06 21:34:39,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:39,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864209954] [2021-10-06 21:34:39,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:34:39,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:39,922 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:39,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:34:40,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:34:40,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:40,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:34:40,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:41,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:41,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:41,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864209954] [2021-10-06 21:34:41,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864209954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:41,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:41,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:34:41,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333253723] [2021-10-06 21:34:41,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:41,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:41,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:41,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:41,742 INFO L87 Difference]: Start difference. First operand 1618 states and 4134 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:50,480 INFO L93 Difference]: Finished difference Result 2330 states and 5884 transitions. [2021-10-06 21:34:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:34:50,480 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:34:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:50,484 INFO L225 Difference]: With dead ends: 2330 [2021-10-06 21:34:50,484 INFO L226 Difference]: Without dead ends: 2318 [2021-10-06 21:34:50,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 3689.0ms TimeCoverageRelationStatistics Valid=363, Invalid=2289, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:34:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-10-06 21:34:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1620. [2021-10-06 21:34:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 2.5552810376775787) internal successors, (4137), 1619 states have internal predecessors, (4137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 4137 transitions. [2021-10-06 21:34:50,510 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 4137 transitions. Word has length 38 [2021-10-06 21:34:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:50,510 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 4137 transitions. [2021-10-06 21:34:50,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 4137 transitions. [2021-10-06 21:34:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:34:50,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:50,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:50,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:50,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:50,713 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:50,714 INFO L82 PathProgramCache]: Analyzing trace with hash -26946515, now seen corresponding path program 64 times [2021-10-06 21:34:50,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:50,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113191136] [2021-10-06 21:34:50,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:34:50,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:50,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:50,717 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:50,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:34:51,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:34:51,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:51,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:34:51,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:51,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:52,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:52,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113191136] [2021-10-06 21:34:52,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113191136] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:52,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:52,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-06 21:34:52,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315147132] [2021-10-06 21:34:52,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:52,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:52,389 INFO L87 Difference]: Start difference. First operand 1620 states and 4137 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:05,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:05,516 INFO L93 Difference]: Finished difference Result 2580 states and 6478 transitions. [2021-10-06 21:35:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:35:05,517 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 38 [2021-10-06 21:35:05,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:05,522 INFO L225 Difference]: With dead ends: 2580 [2021-10-06 21:35:05,522 INFO L226 Difference]: Without dead ends: 2542 [2021-10-06 21:35:05,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 6389.4ms TimeCoverageRelationStatistics Valid=585, Invalid=2955, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:35:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-10-06 21:35:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1606. [2021-10-06 21:35:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 2.5613707165109036) internal successors, (4111), 1605 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 4111 transitions. [2021-10-06 21:35:05,550 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 4111 transitions. Word has length 38 [2021-10-06 21:35:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:05,550 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 4111 transitions. [2021-10-06 21:35:05,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 4111 transitions. [2021-10-06 21:35:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:35:05,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:05,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:05,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:05,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:05,754 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:05,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:05,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1666083215, now seen corresponding path program 65 times [2021-10-06 21:35:05,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:05,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757732753] [2021-10-06 21:35:05,755 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:35:05,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:05,757 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:05,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:35:06,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:35:06,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:06,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:35:06,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:06,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:07,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:07,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757732753] [2021-10-06 21:35:07,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757732753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:35:07,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:35:07,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:35:07,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084764151] [2021-10-06 21:35:07,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:35:07,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:35:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:35:07,585 INFO L87 Difference]: Start difference. First operand 1606 states and 4111 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:22,892 INFO L93 Difference]: Finished difference Result 2550 states and 6374 transitions. [2021-10-06 21:35:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-06 21:35:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 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 38 [2021-10-06 21:35:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:22,897 INFO L225 Difference]: With dead ends: 2550 [2021-10-06 21:35:22,897 INFO L226 Difference]: Without dead ends: 2484 [2021-10-06 21:35:22,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 8126.4ms TimeCoverageRelationStatistics Valid=688, Invalid=3602, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:35:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-10-06 21:35:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1670. [2021-10-06 21:35:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1669 states have (on average 2.5650089874176154) internal successors, (4281), 1669 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 4281 transitions. [2021-10-06 21:35:22,926 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 4281 transitions. Word has length 38 [2021-10-06 21:35:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:22,926 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 4281 transitions. [2021-10-06 21:35:22,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 4281 transitions. [2021-10-06 21:35:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:35:22,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:22,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:22,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:23,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:23,129 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:23,130 INFO L82 PathProgramCache]: Analyzing trace with hash 311335863, now seen corresponding path program 66 times [2021-10-06 21:35:23,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:23,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251035434] [2021-10-06 21:35:23,131 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:35:23,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:23,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:23,132 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:23,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:35:24,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:35:24,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:24,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:35:24,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:24,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:24,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:24,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251035434] [2021-10-06 21:35:24,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251035434] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:35:24,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:35:24,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:35:24,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177987474] [2021-10-06 21:35:24,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:35:24,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:35:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:35:24,864 INFO L87 Difference]: Start difference. First operand 1670 states and 4281 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:36,167 INFO L93 Difference]: Finished difference Result 2396 states and 5989 transitions. [2021-10-06 21:35:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:35:36,168 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:35:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:36,172 INFO L225 Difference]: With dead ends: 2396 [2021-10-06 21:35:36,172 INFO L226 Difference]: Without dead ends: 2332 [2021-10-06 21:35:36,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 5288.6ms TimeCoverageRelationStatistics Valid=458, Invalid=3082, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:35:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2021-10-06 21:35:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 1674. [2021-10-06 21:35:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 2.5600717274357443) internal successors, (4283), 1673 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4283 transitions. [2021-10-06 21:35:36,199 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4283 transitions. Word has length 38 [2021-10-06 21:35:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:36,199 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 4283 transitions. [2021-10-06 21:35:36,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4283 transitions. [2021-10-06 21:35:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:35:36,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:36,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:36,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:36,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:36,416 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:36,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1686900215, now seen corresponding path program 67 times [2021-10-06 21:35:36,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:36,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101427366] [2021-10-06 21:35:36,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:35:36,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:36,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:36,419 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:36,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:35:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:35:37,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:35:37,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:37,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:38,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:38,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101427366] [2021-10-06 21:35:38,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101427366] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:35:38,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:35:38,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:35:38,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454960762] [2021-10-06 21:35:38,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:35:38,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:38,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:35:38,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:35:38,139 INFO L87 Difference]: Start difference. First operand 1674 states and 4283 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:46,841 INFO L93 Difference]: Finished difference Result 2084 states and 5167 transitions. [2021-10-06 21:35:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:35:46,842 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:35:46,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:46,845 INFO L225 Difference]: With dead ends: 2084 [2021-10-06 21:35:46,845 INFO L226 Difference]: Without dead ends: 2004 [2021-10-06 21:35:46,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4127.6ms TimeCoverageRelationStatistics Valid=370, Invalid=2180, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:35:46,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2021-10-06 21:35:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1680. [2021-10-06 21:35:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 2.5539011316259677) internal successors, (4288), 1679 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 4288 transitions. [2021-10-06 21:35:46,869 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 4288 transitions. Word has length 38 [2021-10-06 21:35:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:46,869 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 4288 transitions. [2021-10-06 21:35:46,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 4288 transitions. [2021-10-06 21:35:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:35:46,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:46,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:46,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:47,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:47,073 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:47,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1308243081, now seen corresponding path program 68 times [2021-10-06 21:35:47,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:47,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747093038] [2021-10-06 21:35:47,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:35:47,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:47,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:47,077 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:47,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:35:48,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:35:48,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:48,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:35:48,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:48,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:48,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:48,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747093038] [2021-10-06 21:35:48,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747093038] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:35:48,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:35:48,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:35:48,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580472119] [2021-10-06 21:35:48,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:35:48,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:48,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:35:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:35:48,877 INFO L87 Difference]: Start difference. First operand 1680 states and 4288 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:53,589 INFO L93 Difference]: Finished difference Result 1786 states and 4540 transitions. [2021-10-06 21:35:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:35:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:35:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:53,594 INFO L225 Difference]: With dead ends: 1786 [2021-10-06 21:35:53,594 INFO L226 Difference]: Without dead ends: 1762 [2021-10-06 21:35:53,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1980.7ms TimeCoverageRelationStatistics Valid=229, Invalid=1493, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:35:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2021-10-06 21:35:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1678. [2021-10-06 21:35:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 2.5539654144305306) internal successors, (4283), 1677 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 4283 transitions. [2021-10-06 21:35:53,619 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 4283 transitions. Word has length 38 [2021-10-06 21:35:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:53,619 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 4283 transitions. [2021-10-06 21:35:53,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 4283 transitions. [2021-10-06 21:35:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:35:53,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:53,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:53,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:53,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:53,823 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:53,824 INFO L82 PathProgramCache]: Analyzing trace with hash -942476257, now seen corresponding path program 69 times [2021-10-06 21:35:53,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:53,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5884913] [2021-10-06 21:35:53,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:35:53,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:53,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:53,827 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:53,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:35:54,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:35:54,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:54,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:35:54,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:55,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:55,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:55,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5884913] [2021-10-06 21:35:55,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5884913] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:35:55,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:35:55,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:35:55,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024246234] [2021-10-06 21:35:55,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:35:55,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:35:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:35:55,675 INFO L87 Difference]: Start difference. First operand 1678 states and 4283 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:14,275 INFO L93 Difference]: Finished difference Result 2844 states and 7023 transitions. [2021-10-06 21:36:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:36:14,276 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 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 38 [2021-10-06 21:36:14,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:14,281 INFO L225 Difference]: With dead ends: 2844 [2021-10-06 21:36:14,281 INFO L226 Difference]: Without dead ends: 2778 [2021-10-06 21:36:14,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 10991.8ms TimeCoverageRelationStatistics Valid=651, Invalid=2771, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:36:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2021-10-06 21:36:14,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1722. [2021-10-06 21:36:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 2.5618826263800116) internal successors, (4409), 1721 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 4409 transitions. [2021-10-06 21:36:14,313 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 4409 transitions. Word has length 38 [2021-10-06 21:36:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:14,313 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 4409 transitions. [2021-10-06 21:36:14,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 4409 transitions. [2021-10-06 21:36:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:36:14,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:14,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:14,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:14,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:14,517 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:36:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1997743687, now seen corresponding path program 70 times [2021-10-06 21:36:14,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:14,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128189213] [2021-10-06 21:36:14,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:36:14,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:14,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:14,521 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:14,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:36:15,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:36:15,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:15,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:36:15,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:15,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:16,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:16,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128189213] [2021-10-06 21:36:16,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128189213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:36:16,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:36:16,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:36:16,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743935408] [2021-10-06 21:36:16,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:36:16,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:36:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:36:16,328 INFO L87 Difference]: Start difference. First operand 1722 states and 4409 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:32,568 INFO L93 Difference]: Finished difference Result 2906 states and 7168 transitions. [2021-10-06 21:36:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:36:32,569 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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 38 [2021-10-06 21:36:32,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:32,573 INFO L225 Difference]: With dead ends: 2906 [2021-10-06 21:36:32,573 INFO L226 Difference]: Without dead ends: 2842 [2021-10-06 21:36:32,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 8381.2ms TimeCoverageRelationStatistics Valid=536, Invalid=3004, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:36:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-10-06 21:36:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1702. [2021-10-06 21:36:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.559082892416226) internal successors, (4353), 1701 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4353 transitions. [2021-10-06 21:36:32,603 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4353 transitions. Word has length 38 [2021-10-06 21:36:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:32,603 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4353 transitions. [2021-10-06 21:36:32,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4353 transitions. [2021-10-06 21:36:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:36:32,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:32,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:32,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:32,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:32,819 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:36:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:32,819 INFO L82 PathProgramCache]: Analyzing trace with hash -921659257, now seen corresponding path program 71 times [2021-10-06 21:36:32,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:32,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30026129] [2021-10-06 21:36:32,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:36:32,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:32,822 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:32,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:36:33,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:36:33,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:33,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:36:33,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:34,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:34,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:34,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30026129] [2021-10-06 21:36:34,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30026129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:36:34,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:36:34,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:36:34,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291555754] [2021-10-06 21:36:34,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:36:34,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:36:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:36:34,616 INFO L87 Difference]: Start difference. First operand 1702 states and 4353 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 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... [2021-10-06 21:36:38,884 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:36:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:36:38,887 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:36:38,896 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 [2021-10-06 21:36:38,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:39,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:39,095 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). [2021-10-06 21:36:39,097 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:36:39,098 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:36:39,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:36:39,100 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:36:39,100 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 21:36:39,104 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:36:39,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:36:39,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:36:39 BasicIcfg [2021-10-06 21:36:39,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:36:39,107 INFO L168 Benchmark]: Toolchain (without parser) took 835539.98 ms. Allocated memory was 152.0 MB in the beginning and 3.6 GB in the end (delta: 3.5 GB). Free memory was 126.4 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. [2021-10-06 21:36:39,107 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:36:39,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.76 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 114.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:39,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.94 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:39,108 INFO L168 Benchmark]: Boogie Preprocessor took 67.61 ms. Allocated memory is still 152.0 MB. Free memory was 112.8 MB in the beginning and 111.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:39,109 INFO L168 Benchmark]: RCFGBuilder took 888.38 ms. Allocated memory is still 152.0 MB. Free memory was 111.3 MB in the beginning and 123.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:39,109 INFO L168 Benchmark]: TraceAbstraction took 833989.78 ms. Allocated memory was 152.0 MB in the beginning and 3.6 GB in the end (delta: 3.5 GB). Free memory was 123.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. [2021-10-06 21:36:39,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 484.76 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 114.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 91.94 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.61 ms. Allocated memory is still 152.0 MB. Free memory was 112.8 MB in the beginning and 111.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 888.38 ms. Allocated memory is still 152.0 MB. Free memory was 111.3 MB in the beginning and 123.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 833989.78 ms. Allocated memory was 152.0 MB in the beginning and 3.6 GB in the end (delta: 3.5 GB). Free memory was 123.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17246.6ms, 179 PlacesBefore, 73 PlacesAfterwards, 172 TransitionsBefore, 63 TransitionsAfterwards, 4712 CoEnabledTransitionPairs, 7 FixpointIterations, 76 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 170 TotalNumberOfCompositions, 14697 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7698, positive: 7442, positive conditional: 0, positive unconditional: 7442, negative: 256, negative conditional: 0, negative unconditional: 256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3456, positive: 3371, positive conditional: 0, positive unconditional: 3371, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3456, positive: 3283, positive conditional: 0, positive unconditional: 3283, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 173, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 492, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 426, negative conditional: 0, negative unconditional: 426, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7698, positive: 4071, positive conditional: 0, positive unconditional: 4071, negative: 171, negative conditional: 0, negative unconditional: 171, unknown: 3456, unknown conditional: 0, unknown unconditional: 3456] , Statistics on independence cache: Total cache size (in pairs): 486, Positive cache size: 455, Positive conditional cache size: 0, Positive unconditional cache size: 455, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - 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: 120]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 110]: 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 (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 112]: 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 (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 111]: 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 (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 113]: 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 (1702states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 224 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 833814.6ms, OverallIterations: 80, TraceHistogramMax: 1, EmptinessCheckTime: 372.3ms, AutomataDifference: 693891.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17753.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7821 SDtfs, 26904 SDslu, 74056 SDs, 0 SdLazy, 69931 SolverSat, 7674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 335921.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7230 GetRequests, 4150 SyntacticMatches, 4 SemanticMatches, 3076 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29427 ImplicationChecksByTransitivity, 367539.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8291occurred in iteration=0, InterpolantAutomatonStates: 2671, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7176.0ms AutomataMinimizationTime, 79 MinimizatonAttempts, 58518 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 946.3ms SsaConstructionTime, 5879.2ms SatisfiabilityAnalysisTime, 59290.2ms InterpolantComputationTime, 2747 NumberOfCodeBlocks, 2747 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 5334 ConstructedInterpolants, 4 QuantifiedInterpolants, 23687 SizeOfPredicates, 694 NumberOfNonLiveVariables, 10446 ConjunctsInSsa, 955 ConjunctsInUnsatCore, 160 InterpolantComputations, 160 PerfectInterpolantSequences, 0/0 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