/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20/nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:28:50,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:28:50,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:28:50,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:28:50,195 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 21:28:50,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:28:50,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:28:50,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:28:50,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:28:50,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:28:50,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:28:50,227 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:28:50,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:28:50,227 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:28:50,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:28:50,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:28:50,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:28:50,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:28:50,229 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:28:50,229 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:28:50,229 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:28:50,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:28:50,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:28:50,230 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:28:50,230 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:28:50,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:28:50,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:28:50,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:28:50,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:28:50,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:28:50,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:28:50,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:28:50,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:28:50,233 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:28:50,233 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:28:50,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:28:50,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:28:50,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:28:50,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:28:50,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:28:50,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:28:50,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:28:50,798 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:28:50,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/nonblocking-cntr.wvr.c [2021-10-06 21:28:50,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e978027ab/67ee15cc05f8412d829d8ea565dc0292/FLAGedf62b9e8 [2021-10-06 21:28:51,487 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:28:51,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/nonblocking-cntr.wvr.c [2021-10-06 21:28:51,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e978027ab/67ee15cc05f8412d829d8ea565dc0292/FLAGedf62b9e8 [2021-10-06 21:28:51,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e978027ab/67ee15cc05f8412d829d8ea565dc0292 [2021-10-06 21:28:51,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:28:51,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:28:51,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:28:51,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:28:51,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:28:51,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:28:51" (1/1) ... [2021-10-06 21:28:51,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dad0e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:51, skipping insertion in model container [2021-10-06 21:28:51,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:28:51" (1/1) ... [2021-10-06 21:28:51,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:28:51,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:28:52,185 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/nonblocking-cntr.wvr.c[1985,1998] [2021-10-06 21:28:52,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:28:52,213 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:28:52,237 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/nonblocking-cntr.wvr.c[1985,1998] [2021-10-06 21:28:52,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:28:52,256 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:28:52,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52 WrapperNode [2021-10-06 21:28:52,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:28:52,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:28:52,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:28:52,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:28:52,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:28:52,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:28:52,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:28:52,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:28:52,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:28:52,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:28:52,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:28:52,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:28:52,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (1/1) ... [2021-10-06 21:28:52,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:28:52,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:28:52,374 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 21:28:52,401 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 21:28:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:28:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:28:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:28:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:28:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:28:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:28:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:28:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:28:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:28:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:28:52,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:28:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:28:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:28:52,460 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 21:28:53,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:28:53,013 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 21:28:53,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:28:53 BoogieIcfgContainer [2021-10-06 21:28:53,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:28:53,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:28:53,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:28:53,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:28:53,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:28:51" (1/3) ... [2021-10-06 21:28:53,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65637bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:28:53, skipping insertion in model container [2021-10-06 21:28:53,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:52" (2/3) ... [2021-10-06 21:28:53,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65637bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:28:53, skipping insertion in model container [2021-10-06 21:28:53,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:28:53" (3/3) ... [2021-10-06 21:28:53,027 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-cntr.wvr.c [2021-10-06 21:28:53,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:28:53,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:28:53,034 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:28:53,092 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,093 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,093 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,093 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,094 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,094 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,095 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,095 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,096 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,097 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,098 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,098 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,098 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,099 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,099 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,099 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,100 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,101 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,101 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,101 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,101 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,102 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,106 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,107 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,107 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,112 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:53,120 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:28:53,177 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:28:53,186 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 21:28:53,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:28:53,203 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:28:53,215 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 176 flow [2021-10-06 21:28:53,219 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 176 flow [2021-10-06 21:28:53,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 176 flow [2021-10-06 21:28:53,268 INFO L129 PetriNetUnfolder]: 6/78 cut-off events. [2021-10-06 21:28:53,269 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:28:53,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 6/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2021-10-06 21:28:53,276 INFO L116 LiptonReduction]: Number of co-enabled transitions 462 [2021-10-06 21:29:01,127 INFO L131 LiptonReduction]: Checked pairs total: 498 [2021-10-06 21:29:01,128 INFO L133 LiptonReduction]: Total number of compositions: 81 [2021-10-06 21:29:01,139 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 21:29:01,160 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:29:01,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:01,168 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:29:01,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash 335, now seen corresponding path program 1 times [2021-10-06 21:29:01,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:01,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157474729] [2021-10-06 21:29:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:01,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:01,196 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 21:29:01,201 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 21:29:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:01,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:29:01,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:01,256 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 21:29:01,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:01,257 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 21:29:01,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:01,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157474729] [2021-10-06 21:29:01,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157474729] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:01,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:01,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:29:01,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666621545] [2021-10-06 21:29:01,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:29:01,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:29:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:29:01,287 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:01,302 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-06 21:29:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:29:01,304 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 21:29:01,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:01,316 INFO L225 Difference]: With dead ends: 64 [2021-10-06 21:29:01,316 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 21:29:01,317 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 21:29:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 21:29:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-06 21:29:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-06 21:29:01,359 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-06 21:29:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:01,360 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-06 21:29:01,360 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 21:29:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-06 21:29:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:29:01,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:01,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:29:01,376 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 21:29:01,576 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 21:29:01,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash 328209, now seen corresponding path program 1 times [2021-10-06 21:29:01,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:01,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352158659] [2021-10-06 21:29:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:01,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:01,582 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 21:29:01,583 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 21:29:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:01,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:29:01,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:01,892 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:29:01,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:29:01,981 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 21:29:01,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:02,042 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 21:29:02,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:02,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352158659] [2021-10-06 21:29:02,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352158659] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:02,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:02,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:29:02,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692617346] [2021-10-06 21:29:02,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:29:02,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:02,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:29:02,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:29:02,048 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:02,083 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-06 21:29:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:29:02,083 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 21:29:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:02,085 INFO L225 Difference]: With dead ends: 58 [2021-10-06 21:29:02,085 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 21:29:02,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:29:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 21:29:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 21:29:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 21:29:02,097 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-06 21:29:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:02,097 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 21:29:02,097 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 21:29:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 21:29:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:29:02,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:02,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:29:02,114 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 21:29:02,311 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 21:29:02,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 328211, now seen corresponding path program 1 times [2021-10-06 21:29:02,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:02,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017562108] [2021-10-06 21:29:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:02,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:02,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:02,316 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 21:29:02,322 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 21:29:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:29:02,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:02,460 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:29:02,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:29:02,768 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 21:29:02,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:02,778 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 21:29:02,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:02,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017562108] [2021-10-06 21:29:02,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017562108] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:02,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:02,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:29:02,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712672657] [2021-10-06 21:29:02,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:29:02,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:29:02,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:29:02,782 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:02,804 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-06 21:29:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:29:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:29:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:02,806 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:29:02,806 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:29:02,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:29:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:29:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:29:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-06 21:29:02,815 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-06 21:29:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:02,816 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-06 21:29:02,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-06 21:29:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:29:02,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:02,817 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:29:02,830 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 21:29:03,029 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 21:29:03,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:03,032 INFO L82 PathProgramCache]: Analyzing trace with hash 315416967, now seen corresponding path program 1 times [2021-10-06 21:29:03,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:03,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888257566] [2021-10-06 21:29:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:03,033 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:03,036 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 21:29:03,045 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 21:29:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:03,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:29:03,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:03,166 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 21:29:03,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:03,226 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 21:29:03,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:03,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888257566] [2021-10-06 21:29:03,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888257566] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:03,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:03,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:29:03,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156332144] [2021-10-06 21:29:03,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:29:03,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:29:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:29:03,230 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:03,253 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-06 21:29:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:29:03,258 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 21:29:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:03,259 INFO L225 Difference]: With dead ends: 43 [2021-10-06 21:29:03,259 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 21:29:03,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:29:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 21:29:03,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 21:29:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-06 21:29:03,271 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-06 21:29:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:03,274 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-06 21:29:03,274 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 21:29:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-06 21:29:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:29:03,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:03,275 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:29:03,291 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 21:29:03,475 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 21:29:03,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:03,478 INFO L82 PathProgramCache]: Analyzing trace with hash 315416969, now seen corresponding path program 1 times [2021-10-06 21:29:03,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:03,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857235209] [2021-10-06 21:29:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:03,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:03,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:03,480 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 21:29:03,507 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 21:29:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:03,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:29:03,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:03,659 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:29:03,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 103 treesize of output 130 [2021-10-06 21:29:06,695 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 21:29:06,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:06,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:06,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857235209] [2021-10-06 21:29:06,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857235209] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:06,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:06,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:29:06,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415474211] [2021-10-06 21:29:06,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:29:06,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:06,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:29:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:29:06,723 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:06,743 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 21:29:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:29:06,744 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 21:29:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:06,745 INFO L225 Difference]: With dead ends: 34 [2021-10-06 21:29:06,745 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 21:29:06,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:29:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 21:29:06,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 21:29:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 21:29:06,754 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-06 21:29:06,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:06,754 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 21:29:06,755 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 21:29:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 21:29:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:29:06,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:06,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:06,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-06 21:29:06,969 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 21:29:06,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1974907728, now seen corresponding path program 1 times [2021-10-06 21:29:06,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:06,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684715495] [2021-10-06 21:29:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:06,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:06,973 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 21:29:06,974 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 21:29:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:29:07,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:07,075 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 21:29:07,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:07,113 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 21:29:07,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:07,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684715495] [2021-10-06 21:29:07,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684715495] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:07,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:07,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:29:07,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113797019] [2021-10-06 21:29:07,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:29:07,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:29:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:29:07,116 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:07,135 INFO L93 Difference]: Finished difference Result 57 states and 124 transitions. [2021-10-06 21:29:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:29:07,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:29:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:07,138 INFO L225 Difference]: With dead ends: 57 [2021-10-06 21:29:07,138 INFO L226 Difference]: Without dead ends: 42 [2021-10-06 21:29:07,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:29:07,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-06 21:29:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-06 21:29:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-06 21:29:07,154 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-06 21:29:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:07,155 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-06 21:29:07,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-06 21:29:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:29:07,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:07,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:07,175 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 21:29:07,372 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 21:29:07,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:07,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1927919514, now seen corresponding path program 1 times [2021-10-06 21:29:07,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:07,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002569091] [2021-10-06 21:29:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:07,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:07,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:07,377 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 21:29:07,383 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 21:29:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:07,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:29:07,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:29:07,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:29:07,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:07,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002569091] [2021-10-06 21:29:07,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002569091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:07,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:07,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-06 21:29:07,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260889569] [2021-10-06 21:29:07,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:29:07,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:29:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:29:07,567 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:07,626 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-06 21:29:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:29:07,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:29:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:07,628 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:29:07,628 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:29:07,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:29:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:29:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:29:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-06 21:29:07,633 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-06 21:29:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:07,633 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-06 21:29:07,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-06 21:29:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:29:07,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:07,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:07,652 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 21:29:07,846 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 21:29:07,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:07,848 INFO L82 PathProgramCache]: Analyzing trace with hash 618757088, now seen corresponding path program 1 times [2021-10-06 21:29:07,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:07,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024349453] [2021-10-06 21:29:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:29:07,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:07,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:07,852 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 21:29:07,853 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 21:29:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:07,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:29:07,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:29:08,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:29:08,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:08,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024349453] [2021-10-06 21:29:08,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024349453] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:08,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:08,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:29:08,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133626735] [2021-10-06 21:29:08,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:29:08,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:29:08,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:29:08,251 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:08,359 INFO L93 Difference]: Finished difference Result 60 states and 134 transitions. [2021-10-06 21:29:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:29:08,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:29:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:08,360 INFO L225 Difference]: With dead ends: 60 [2021-10-06 21:29:08,360 INFO L226 Difference]: Without dead ends: 60 [2021-10-06 21:29:08,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:29:08,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-06 21:29:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-06 21:29:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 96 transitions. [2021-10-06 21:29:08,365 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 96 transitions. Word has length 15 [2021-10-06 21:29:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:08,365 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 96 transitions. [2021-10-06 21:29:08,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 96 transitions. [2021-10-06 21:29:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:29:08,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:08,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:08,383 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 21:29:08,579 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 21:29:08,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:08,581 INFO L82 PathProgramCache]: Analyzing trace with hash -906441118, now seen corresponding path program 2 times [2021-10-06 21:29:08,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:08,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43024113] [2021-10-06 21:29:08,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:08,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:08,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:08,584 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 21:29:08,587 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 21:29:08,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:08,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:08,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:29:08,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:29:08,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:08,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:08,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43024113] [2021-10-06 21:29:08,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43024113] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:29:08,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:29:08,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 4 [2021-10-06 21:29:08,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043967275] [2021-10-06 21:29:08,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:29:08,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:08,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:29:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:29:08,974 INFO L87 Difference]: Start difference. First operand 44 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:09,014 INFO L93 Difference]: Finished difference Result 87 states and 191 transitions. [2021-10-06 21:29:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:29:09,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:29:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:09,015 INFO L225 Difference]: With dead ends: 87 [2021-10-06 21:29:09,015 INFO L226 Difference]: Without dead ends: 68 [2021-10-06 21:29:09,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:29:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-06 21:29:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-10-06 21:29:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.305084745762712) internal successors, (136), 59 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 136 transitions. [2021-10-06 21:29:09,021 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 136 transitions. Word has length 15 [2021-10-06 21:29:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:09,021 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 136 transitions. [2021-10-06 21:29:09,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 136 transitions. [2021-10-06 21:29:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:09,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:09,023 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:09,039 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 21:29:09,234 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 21:29:09,235 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:09,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:09,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1978671782, now seen corresponding path program 3 times [2021-10-06 21:29:09,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:09,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945639186] [2021-10-06 21:29:09,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:09,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:09,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:09,238 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 21:29:09,246 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 21:29:09,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:29:09,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:09,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:09,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:09,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:10,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:10,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945639186] [2021-10-06 21:29:10,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945639186] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:10,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:10,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:10,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268843004] [2021-10-06 21:29:10,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:10,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:10,316 INFO L87 Difference]: Start difference. First operand 60 states and 136 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:12,803 INFO L93 Difference]: Finished difference Result 224 states and 492 transitions. [2021-10-06 21:29:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:29:12,804 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:12,806 INFO L225 Difference]: With dead ends: 224 [2021-10-06 21:29:12,807 INFO L226 Difference]: Without dead ends: 220 [2021-10-06 21:29:12,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2008.3ms TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:29:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-06 21:29:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 94. [2021-10-06 21:29:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.6881720430107525) internal successors, (250), 93 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 21:29:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 250 transitions. [2021-10-06 21:29:12,820 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 250 transitions. Word has length 16 [2021-10-06 21:29:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:12,821 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 250 transitions. [2021-10-06 21:29:12,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 250 transitions. [2021-10-06 21:29:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:12,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:12,823 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:12,834 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 21:29:13,029 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 21:29:13,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:13,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:13,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2089275938, now seen corresponding path program 4 times [2021-10-06 21:29:13,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:13,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530533103] [2021-10-06 21:29:13,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:13,033 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:13,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:13,034 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 21:29:13,047 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 21:29:13,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:13,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:13,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:13,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:13,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:14,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:14,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530533103] [2021-10-06 21:29:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530533103] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:14,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:14,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515156864] [2021-10-06 21:29:14,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:14,027 INFO L87 Difference]: Start difference. First operand 94 states and 250 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:16,174 INFO L93 Difference]: Finished difference Result 224 states and 535 transitions. [2021-10-06 21:29:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:29:16,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:16,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:16,178 INFO L225 Difference]: With dead ends: 224 [2021-10-06 21:29:16,178 INFO L226 Difference]: Without dead ends: 216 [2021-10-06 21:29:16,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1869.1ms TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:29:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-06 21:29:16,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 110. [2021-10-06 21:29:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.8256880733944953) internal successors, (308), 109 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 21:29:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 308 transitions. [2021-10-06 21:29:16,188 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 308 transitions. Word has length 16 [2021-10-06 21:29:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:16,188 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 308 transitions. [2021-10-06 21:29:16,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:16,189 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 308 transitions. [2021-10-06 21:29:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:16,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:16,190 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:16,205 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 21:29:16,403 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 21:29:16,404 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash 436801738, now seen corresponding path program 5 times [2021-10-06 21:29:16,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:16,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810647875] [2021-10-06 21:29:16,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:16,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:16,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:16,408 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 21:29:16,409 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 21:29:16,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:29:16,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:16,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:29:16,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:16,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:17,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:17,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:17,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810647875] [2021-10-06 21:29:17,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810647875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:17,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:17,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:29:17,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529635139] [2021-10-06 21:29:17,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:29:17,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:17,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:29:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:29:17,211 INFO L87 Difference]: Start difference. First operand 110 states and 308 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:18,207 INFO L93 Difference]: Finished difference Result 130 states and 357 transitions. [2021-10-06 21:29:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:29:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:18,209 INFO L225 Difference]: With dead ends: 130 [2021-10-06 21:29:18,209 INFO L226 Difference]: Without dead ends: 126 [2021-10-06 21:29:18,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 994.6ms TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-06 21:29:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2021-10-06 21:29:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.831858407079646) internal successors, (320), 113 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 320 transitions. [2021-10-06 21:29:18,218 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 320 transitions. Word has length 16 [2021-10-06 21:29:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:18,219 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 320 transitions. [2021-10-06 21:29:18,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 320 transitions. [2021-10-06 21:29:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:18,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:18,221 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:18,231 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 21:29:18,425 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 21:29:18,426 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1517688646, now seen corresponding path program 6 times [2021-10-06 21:29:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:18,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881174070] [2021-10-06 21:29:18,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:18,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:18,430 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 21:29:18,431 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 21:29:18,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:29:18,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:18,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:18,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:19,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:19,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881174070] [2021-10-06 21:29:19,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881174070] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:19,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:19,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509688813] [2021-10-06 21:29:19,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:19,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:19,289 INFO L87 Difference]: Start difference. First operand 114 states and 320 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:21,165 INFO L93 Difference]: Finished difference Result 288 states and 759 transitions. [2021-10-06 21:29:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:29:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:21,169 INFO L225 Difference]: With dead ends: 288 [2021-10-06 21:29:21,169 INFO L226 Difference]: Without dead ends: 284 [2021-10-06 21:29:21,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1656.5ms TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:29:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-06 21:29:21,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 146. [2021-10-06 21:29:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.8413793103448275) internal successors, (412), 145 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 21:29:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 412 transitions. [2021-10-06 21:29:21,180 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 412 transitions. Word has length 16 [2021-10-06 21:29:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:21,181 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 412 transitions. [2021-10-06 21:29:21,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:21,181 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 412 transitions. [2021-10-06 21:29:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:21,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:21,183 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:21,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-06 21:29:21,399 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 21:29:21,400 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:21,401 INFO L82 PathProgramCache]: Analyzing trace with hash -235769154, now seen corresponding path program 7 times [2021-10-06 21:29:21,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:21,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927995236] [2021-10-06 21:29:21,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:21,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:21,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:21,403 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 21:29:21,404 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 21:29:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:21,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:21,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:21,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:22,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:22,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927995236] [2021-10-06 21:29:22,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927995236] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:22,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:22,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:22,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141110992] [2021-10-06 21:29:22,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:22,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:22,368 INFO L87 Difference]: Start difference. First operand 146 states and 412 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:25,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:25,359 INFO L93 Difference]: Finished difference Result 330 states and 811 transitions. [2021-10-06 21:29:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:29:25,361 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:25,365 INFO L225 Difference]: With dead ends: 330 [2021-10-06 21:29:25,365 INFO L226 Difference]: Without dead ends: 330 [2021-10-06 21:29:25,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2595.3ms TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:29:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-06 21:29:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 154. [2021-10-06 21:29:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.8627450980392157) internal successors, (438), 153 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 21:29:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 438 transitions. [2021-10-06 21:29:25,376 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 438 transitions. Word has length 16 [2021-10-06 21:29:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:25,377 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 438 transitions. [2021-10-06 21:29:25,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 438 transitions. [2021-10-06 21:29:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:25,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:25,378 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:25,395 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 21:29:25,593 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 21:29:25,593 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:25,594 INFO L82 PathProgramCache]: Analyzing trace with hash -125164998, now seen corresponding path program 8 times [2021-10-06 21:29:25,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:25,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932715020] [2021-10-06 21:29:25,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:25,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:25,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:25,597 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 21:29:25,598 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 21:29:25,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:25,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:25,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:25,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:26,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:26,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:26,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932715020] [2021-10-06 21:29:26,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932715020] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:26,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:26,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:26,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797725737] [2021-10-06 21:29:26,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:26,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:26,465 INFO L87 Difference]: Start difference. First operand 154 states and 438 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:28,544 INFO L93 Difference]: Finished difference Result 334 states and 857 transitions. [2021-10-06 21:29:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:29:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:28,548 INFO L225 Difference]: With dead ends: 334 [2021-10-06 21:29:28,549 INFO L226 Difference]: Without dead ends: 326 [2021-10-06 21:29:28,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1822.4ms TimeCoverageRelationStatistics Valid=309, Invalid=747, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:29:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-06 21:29:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 160. [2021-10-06 21:29:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.861635220125786) internal successors, (455), 159 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 21:29:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 455 transitions. [2021-10-06 21:29:28,559 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 455 transitions. Word has length 16 [2021-10-06 21:29:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:28,560 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 455 transitions. [2021-10-06 21:29:28,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 455 transitions. [2021-10-06 21:29:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:28,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:28,561 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:28,576 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 21:29:28,773 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 21:29:28,774 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:28,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1777639198, now seen corresponding path program 9 times [2021-10-06 21:29:28,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:28,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030100696] [2021-10-06 21:29:28,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:28,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:28,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:28,778 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 21:29:28,779 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 21:29:28,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:29:28,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:28,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:28,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:29,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:29,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:29,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030100696] [2021-10-06 21:29:29,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030100696] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:29,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:29,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:29:29,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079470086] [2021-10-06 21:29:29,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:29:29,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:29:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:29:29,647 INFO L87 Difference]: Start difference. First operand 160 states and 455 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:31,109 INFO L93 Difference]: Finished difference Result 216 states and 603 transitions. [2021-10-06 21:29:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:29:31,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:31,112 INFO L225 Difference]: With dead ends: 216 [2021-10-06 21:29:31,112 INFO L226 Difference]: Without dead ends: 214 [2021-10-06 21:29:31,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1295.8ms TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:29:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-06 21:29:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 162. [2021-10-06 21:29:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.8447204968944098) internal successors, (458), 161 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 21:29:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 458 transitions. [2021-10-06 21:29:31,120 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 458 transitions. Word has length 16 [2021-10-06 21:29:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:31,120 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 458 transitions. [2021-10-06 21:29:31,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 458 transitions. [2021-10-06 21:29:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:31,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:31,122 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:31,134 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 21:29:31,334 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 21:29:31,334 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash -797256716, now seen corresponding path program 10 times [2021-10-06 21:29:31,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:31,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784827480] [2021-10-06 21:29:31,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:31,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:31,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:31,338 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 21:29:31,341 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 21:29:31,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:31,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:31,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:31,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:31,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:32,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:32,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784827480] [2021-10-06 21:29:32,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784827480] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:32,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:32,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:32,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260902524] [2021-10-06 21:29:32,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:32,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:32,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:32,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:32,321 INFO L87 Difference]: Start difference. First operand 162 states and 458 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:34,486 INFO L93 Difference]: Finished difference Result 326 states and 816 transitions. [2021-10-06 21:29:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:29:34,488 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:34,491 INFO L225 Difference]: With dead ends: 326 [2021-10-06 21:29:34,491 INFO L226 Difference]: Without dead ends: 326 [2021-10-06 21:29:34,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1856.8ms TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:29:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-06 21:29:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 166. [2021-10-06 21:29:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.8727272727272726) internal successors, (474), 165 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 21:29:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 474 transitions. [2021-10-06 21:29:34,502 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 474 transitions. Word has length 16 [2021-10-06 21:29:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:34,502 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 474 transitions. [2021-10-06 21:29:34,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 474 transitions. [2021-10-06 21:29:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:34,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:34,504 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:34,521 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 21:29:34,718 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 21:29:34,718 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash -686652560, now seen corresponding path program 11 times [2021-10-06 21:29:34,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:34,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792900862] [2021-10-06 21:29:34,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:34,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:34,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:34,721 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 21:29:34,726 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 21:29:34,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:34,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:34,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:35,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:35,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:35,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792900862] [2021-10-06 21:29:35,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792900862] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:35,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:35,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:35,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130424709] [2021-10-06 21:29:35,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:35,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:35,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:35,635 INFO L87 Difference]: Start difference. First operand 166 states and 474 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:37,543 INFO L93 Difference]: Finished difference Result 308 states and 784 transitions. [2021-10-06 21:29:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:29:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:37,548 INFO L225 Difference]: With dead ends: 308 [2021-10-06 21:29:37,548 INFO L226 Difference]: Without dead ends: 300 [2021-10-06 21:29:37,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1532.2ms TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:29:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-06 21:29:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 174. [2021-10-06 21:29:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.901734104046243) internal successors, (502), 173 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 21:29:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 502 transitions. [2021-10-06 21:29:37,562 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 502 transitions. Word has length 16 [2021-10-06 21:29:37,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:37,562 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 502 transitions. [2021-10-06 21:29:37,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,563 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 502 transitions. [2021-10-06 21:29:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:29:37,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:37,564 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:37,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-06 21:29:37,778 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 21:29:37,779 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1955840536, now seen corresponding path program 12 times [2021-10-06 21:29:37,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:37,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390347813] [2021-10-06 21:29:37,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:37,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:37,782 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 21:29:37,822 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 21:29:38,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:29:38,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:38,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:38,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:38,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:38,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:38,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390347813] [2021-10-06 21:29:38,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390347813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:38,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:38,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:29:38,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602665892] [2021-10-06 21:29:38,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:29:38,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:38,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:29:38,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:29:38,692 INFO L87 Difference]: Start difference. First operand 174 states and 502 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:40,108 INFO L93 Difference]: Finished difference Result 190 states and 533 transitions. [2021-10-06 21:29:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:29:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:29:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:40,113 INFO L225 Difference]: With dead ends: 190 [2021-10-06 21:29:40,113 INFO L226 Difference]: Without dead ends: 188 [2021-10-06 21:29:40,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1040.3ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:29:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-06 21:29:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 174. [2021-10-06 21:29:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.8901734104046244) internal successors, (500), 173 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 21:29:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 500 transitions. [2021-10-06 21:29:40,121 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 500 transitions. Word has length 16 [2021-10-06 21:29:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:40,122 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 500 transitions. [2021-10-06 21:29:40,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 500 transitions. [2021-10-06 21:29:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:40,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:40,123 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:40,136 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 21:29:40,324 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 21:29:40,324 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:40,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1285160096, now seen corresponding path program 13 times [2021-10-06 21:29:40,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:40,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933879086] [2021-10-06 21:29:40,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:40,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:40,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:40,328 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 21:29:40,330 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 21:29:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:40,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:29:40,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:40,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:41,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:41,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933879086] [2021-10-06 21:29:41,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933879086] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:41,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:41,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:41,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960818445] [2021-10-06 21:29:41,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:41,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:41,444 INFO L87 Difference]: Start difference. First operand 174 states and 500 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 21:29:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:44,495 INFO L93 Difference]: Finished difference Result 310 states and 816 transitions. [2021-10-06 21:29:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:29:44,496 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:29:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:44,498 INFO L225 Difference]: With dead ends: 310 [2021-10-06 21:29:44,498 INFO L226 Difference]: Without dead ends: 310 [2021-10-06 21:29:44,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2932.5ms TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:29:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-06 21:29:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 180. [2021-10-06 21:29:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.8491620111731844) internal successors, (510), 179 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 21:29:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 510 transitions. [2021-10-06 21:29:44,508 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 510 transitions. Word has length 17 [2021-10-06 21:29:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:44,509 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 510 transitions. [2021-10-06 21:29:44,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 21:29:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 510 transitions. [2021-10-06 21:29:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:44,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:44,510 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:44,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:44,718 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 21:29:44,719 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:44,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash 478155968, now seen corresponding path program 14 times [2021-10-06 21:29:44,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:44,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685551788] [2021-10-06 21:29:44,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:44,721 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:44,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:44,723 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 21:29:44,727 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 21:29:44,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:44,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:44,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:29:44,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:29:45,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:45,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:45,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685551788] [2021-10-06 21:29:45,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685551788] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:45,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:45,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 7 [2021-10-06 21:29:45,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698811814] [2021-10-06 21:29:45,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:29:45,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:29:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:29:45,406 INFO L87 Difference]: Start difference. First operand 180 states and 510 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:45,478 INFO L93 Difference]: Finished difference Result 273 states and 736 transitions. [2021-10-06 21:29:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:29:45,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:29:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:45,481 INFO L225 Difference]: With dead ends: 273 [2021-10-06 21:29:45,481 INFO L226 Difference]: Without dead ends: 250 [2021-10-06 21:29:45,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:29:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-06 21:29:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 210. [2021-10-06 21:29:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.8181818181818183) internal successors, (589), 209 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 21:29:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 589 transitions. [2021-10-06 21:29:45,491 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 589 transitions. Word has length 17 [2021-10-06 21:29:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:45,491 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 589 transitions. [2021-10-06 21:29:45,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 589 transitions. [2021-10-06 21:29:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:45,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:45,493 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:45,510 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 21:29:45,706 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 21:29:45,707 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:45,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:45,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1356967816, now seen corresponding path program 15 times [2021-10-06 21:29:45,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:45,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965638187] [2021-10-06 21:29:45,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:45,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:45,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:45,709 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 21:29:45,746 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 21:29:46,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:29:46,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:46,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:29:46,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:46,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:46,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:46,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965638187] [2021-10-06 21:29:46,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965638187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:46,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:46,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:29:46,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898207447] [2021-10-06 21:29:46,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:46,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:46,909 INFO L87 Difference]: Start difference. First operand 210 states and 589 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:51,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:51,048 INFO L93 Difference]: Finished difference Result 398 states and 982 transitions. [2021-10-06 21:29:51,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:29:51,049 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:29:51,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:51,052 INFO L225 Difference]: With dead ends: 398 [2021-10-06 21:29:51,052 INFO L226 Difference]: Without dead ends: 398 [2021-10-06 21:29:51,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3523.8ms TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:29:51,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-06 21:29:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 240. [2021-10-06 21:29:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.9623430962343096) internal successors, (708), 239 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 708 transitions. [2021-10-06 21:29:51,067 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 708 transitions. Word has length 17 [2021-10-06 21:29:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:51,068 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 708 transitions. [2021-10-06 21:29:51,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 708 transitions. [2021-10-06 21:29:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:51,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:51,070 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:51,084 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 21:29:51,284 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 21:29:51,284 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:51,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1130722578, now seen corresponding path program 16 times [2021-10-06 21:29:51,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:51,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746779610] [2021-10-06 21:29:51,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:51,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:51,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:51,288 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 21:29:51,289 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 21:29:51,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:51,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:51,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:29:51,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:51,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:52,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:52,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746779610] [2021-10-06 21:29:52,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746779610] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:52,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:52,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:29:52,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452365479] [2021-10-06 21:29:52,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:29:52,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:52,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:29:52,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:29:52,449 INFO L87 Difference]: Start difference. First operand 240 states and 708 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 21:29:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:56,028 INFO L93 Difference]: Finished difference Result 376 states and 997 transitions. [2021-10-06 21:29:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:29:56,029 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:29:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:56,032 INFO L225 Difference]: With dead ends: 376 [2021-10-06 21:29:56,033 INFO L226 Difference]: Without dead ends: 364 [2021-10-06 21:29:56,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3134.3ms TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:29:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-06 21:29:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 218. [2021-10-06 21:29:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9078341013824884) internal successors, (631), 217 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 21:29:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 631 transitions. [2021-10-06 21:29:56,044 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 631 transitions. Word has length 17 [2021-10-06 21:29:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:56,044 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 631 transitions. [2021-10-06 21:29:56,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 21:29:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 631 transitions. [2021-10-06 21:29:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:29:56,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:56,046 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:56,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:56,259 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 21:29:56,259 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2062112644, now seen corresponding path program 17 times [2021-10-06 21:29:56,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:56,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825942009] [2021-10-06 21:29:56,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:56,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:56,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:56,263 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 21:29:56,263 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 21:29:56,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:29:56,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:56,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:29:56,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:56,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:58,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:58,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825942009] [2021-10-06 21:29:58,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825942009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:58,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:58,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:29:58,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049019753] [2021-10-06 21:29:58,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:29:58,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:29:58,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:29:58,144 INFO L87 Difference]: Start difference. First operand 218 states and 631 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:05,976 INFO L93 Difference]: Finished difference Result 462 states and 1208 transitions. [2021-10-06 21:30:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:30:05,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:05,980 INFO L225 Difference]: With dead ends: 462 [2021-10-06 21:30:05,981 INFO L226 Difference]: Without dead ends: 454 [2021-10-06 21:30:05,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 7418.3ms TimeCoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:30:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-06 21:30:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 274. [2021-10-06 21:30:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.0073260073260073) internal successors, (821), 273 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 21:30:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 821 transitions. [2021-10-06 21:30:05,995 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 821 transitions. Word has length 18 [2021-10-06 21:30:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:05,995 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 821 transitions. [2021-10-06 21:30:05,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 821 transitions. [2021-10-06 21:30:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:05,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:05,997 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:06,012 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 21:30:06,209 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 21:30:06,210 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:06,211 INFO L82 PathProgramCache]: Analyzing trace with hash 409638444, now seen corresponding path program 18 times [2021-10-06 21:30:06,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:06,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182607752] [2021-10-06 21:30:06,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:06,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:06,213 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 21:30:06,214 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 21:30:06,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:30:06,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:06,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:30:06,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:06,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:07,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:07,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182607752] [2021-10-06 21:30:07,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182607752] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:07,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:07,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:30:07,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279167537] [2021-10-06 21:30:07,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:30:07,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:30:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:30:07,601 INFO L87 Difference]: Start difference. First operand 274 states and 821 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:10,469 INFO L93 Difference]: Finished difference Result 332 states and 947 transitions. [2021-10-06 21:30:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:30:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:10,472 INFO L225 Difference]: With dead ends: 332 [2021-10-06 21:30:10,472 INFO L226 Difference]: Without dead ends: 330 [2021-10-06 21:30:10,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2524.7ms TimeCoverageRelationStatistics Valid=291, Invalid=765, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:30:10,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-06 21:30:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 280. [2021-10-06 21:30:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.017921146953405) internal successors, (842), 279 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 21:30:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 842 transitions. [2021-10-06 21:30:10,492 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 842 transitions. Word has length 18 [2021-10-06 21:30:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:10,492 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 842 transitions. [2021-10-06 21:30:10,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 842 transitions. [2021-10-06 21:30:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:10,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:10,494 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:10,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-06 21:30:10,710 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 21:30:10,711 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:10,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1040825790, now seen corresponding path program 19 times [2021-10-06 21:30:10,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:10,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20290253] [2021-10-06 21:30:10,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:10,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:10,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:10,715 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 21:30:10,716 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 21:30:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:11,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:30:11,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:11,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:12,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:12,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20290253] [2021-10-06 21:30:12,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20290253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:12,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:12,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:30:12,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944136175] [2021-10-06 21:30:12,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:30:12,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:30:12,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:30:12,345 INFO L87 Difference]: Start difference. First operand 280 states and 842 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:16,292 INFO L93 Difference]: Finished difference Result 456 states and 1261 transitions. [2021-10-06 21:30:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:30:16,293 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:16,296 INFO L225 Difference]: With dead ends: 456 [2021-10-06 21:30:16,297 INFO L226 Difference]: Without dead ends: 448 [2021-10-06 21:30:16,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3832.2ms TimeCoverageRelationStatistics Valid=246, Invalid=684, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:30:16,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-06 21:30:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 298. [2021-10-06 21:30:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.047138047138047) internal successors, (905), 297 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 21:30:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 905 transitions. [2021-10-06 21:30:16,310 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 905 transitions. Word has length 18 [2021-10-06 21:30:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:16,310 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 905 transitions. [2021-10-06 21:30:16,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 905 transitions. [2021-10-06 21:30:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:16,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:16,312 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:16,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:16,525 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 21:30:16,526 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:16,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1995600524, now seen corresponding path program 20 times [2021-10-06 21:30:16,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:16,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136193645] [2021-10-06 21:30:16,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:16,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:16,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:16,529 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 21:30:16,530 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 21:30:16,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:30:16,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:16,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:30:16,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:17,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:17,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:17,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136193645] [2021-10-06 21:30:17,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136193645] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:17,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:17,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:30:17,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922482605] [2021-10-06 21:30:17,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:30:17,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:17,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:30:17,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:30:17,775 INFO L87 Difference]: Start difference. First operand 298 states and 905 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:27,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:27,596 INFO L93 Difference]: Finished difference Result 738 states and 1924 transitions. [2021-10-06 21:30:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:30:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:27,601 INFO L225 Difference]: With dead ends: 738 [2021-10-06 21:30:27,601 INFO L226 Difference]: Without dead ends: 738 [2021-10-06 21:30:27,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 9110.9ms TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:30:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-06 21:30:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 320. [2021-10-06 21:30:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.0658307210031346) internal successors, (978), 319 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 21:30:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 978 transitions. [2021-10-06 21:30:27,619 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 978 transitions. Word has length 18 [2021-10-06 21:30:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:27,619 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 978 transitions. [2021-10-06 21:30:27,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 978 transitions. [2021-10-06 21:30:27,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:27,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:27,621 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:27,638 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 21:30:27,834 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 21:30:27,835 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash 621336762, now seen corresponding path program 21 times [2021-10-06 21:30:27,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:27,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055327939] [2021-10-06 21:30:27,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:30:27,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:27,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:27,838 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 21:30:27,856 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 21:30:28,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:30:28,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:28,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:30:28,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:28,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:29,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:29,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055327939] [2021-10-06 21:30:29,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055327939] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:29,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:29,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:30:29,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457760918] [2021-10-06 21:30:29,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:30:29,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:29,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:30:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:30:29,260 INFO L87 Difference]: Start difference. First operand 320 states and 978 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:35,351 INFO L93 Difference]: Finished difference Result 680 states and 1877 transitions. [2021-10-06 21:30:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:30:35,351 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:35,355 INFO L225 Difference]: With dead ends: 680 [2021-10-06 21:30:35,356 INFO L226 Difference]: Without dead ends: 676 [2021-10-06 21:30:35,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 5786.6ms TimeCoverageRelationStatistics Valid=715, Invalid=2147, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:30:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-10-06 21:30:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 364. [2021-10-06 21:30:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 2.9476584022038566) internal successors, (1070), 363 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states 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 21:30:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1070 transitions. [2021-10-06 21:30:35,380 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1070 transitions. Word has length 18 [2021-10-06 21:30:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:35,380 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 1070 transitions. [2021-10-06 21:30:35,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1070 transitions. [2021-10-06 21:30:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:35,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:35,382 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:35,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-06 21:30:35,595 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 21:30:35,595 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:35,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1719766708, now seen corresponding path program 22 times [2021-10-06 21:30:35,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:35,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363659078] [2021-10-06 21:30:35,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:30:35,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:35,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:35,599 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 21:30:35,600 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 21:30:35,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:30:35,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:35,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:30:35,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:36,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:37,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:37,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363659078] [2021-10-06 21:30:37,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363659078] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:37,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:37,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:30:37,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805428106] [2021-10-06 21:30:37,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:30:37,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:30:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:30:37,224 INFO L87 Difference]: Start difference. First operand 364 states and 1070 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:45,441 INFO L93 Difference]: Finished difference Result 572 states and 1521 transitions. [2021-10-06 21:30:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:30:45,442 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:45,445 INFO L225 Difference]: With dead ends: 572 [2021-10-06 21:30:45,445 INFO L226 Difference]: Without dead ends: 568 [2021-10-06 21:30:45,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 7904.5ms TimeCoverageRelationStatistics Valid=716, Invalid=2146, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:30:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-06 21:30:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 378. [2021-10-06 21:30:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 2.9681697612732094) internal successors, (1119), 377 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states 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 21:30:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1119 transitions. [2021-10-06 21:30:45,461 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1119 transitions. Word has length 18 [2021-10-06 21:30:45,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:45,461 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 1119 transitions. [2021-10-06 21:30:45,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1119 transitions. [2021-10-06 21:30:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:45,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:45,463 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:45,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:45,675 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 21:30:45,676 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:45,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1037365840, now seen corresponding path program 23 times [2021-10-06 21:30:45,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:45,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236323526] [2021-10-06 21:30:45,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:45,678 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:45,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:45,679 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 21:30:45,682 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 21:30:46,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:30:46,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:46,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:46,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:46,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:46,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236323526] [2021-10-06 21:30:46,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236323526] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:46,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:46,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:30:46,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476919113] [2021-10-06 21:30:46,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:30:46,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:46,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:30:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:30:46,744 INFO L87 Difference]: Start difference. First operand 378 states and 1119 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:50,352 INFO L93 Difference]: Finished difference Result 648 states and 1744 transitions. [2021-10-06 21:30:50,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:30:50,353 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:50,356 INFO L225 Difference]: With dead ends: 648 [2021-10-06 21:30:50,356 INFO L226 Difference]: Without dead ends: 648 [2021-10-06 21:30:50,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 3180.2ms TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:30:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-10-06 21:30:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 402. [2021-10-06 21:30:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.975062344139651) internal successors, (1193), 401 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 21:30:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1193 transitions. [2021-10-06 21:30:50,374 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1193 transitions. Word has length 18 [2021-10-06 21:30:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:50,374 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1193 transitions. [2021-10-06 21:30:50,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1193 transitions. [2021-10-06 21:30:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:50,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:50,377 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:50,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:50,591 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 21:30:50,591 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:50,592 INFO L82 PathProgramCache]: Analyzing trace with hash 171127380, now seen corresponding path program 24 times [2021-10-06 21:30:50,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:50,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690105363] [2021-10-06 21:30:50,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:50,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:50,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:50,594 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 21:30:50,601 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 21:30:50,935 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:30:50,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:50,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:30:50,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:51,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:52,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:52,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690105363] [2021-10-06 21:30:52,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690105363] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:52,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:52,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:30:52,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933593634] [2021-10-06 21:30:52,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:30:52,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:30:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:30:52,316 INFO L87 Difference]: Start difference. First operand 402 states and 1193 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:59,340 INFO L93 Difference]: Finished difference Result 714 states and 1943 transitions. [2021-10-06 21:30:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:30:59,341 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:30:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:59,346 INFO L225 Difference]: With dead ends: 714 [2021-10-06 21:30:59,346 INFO L226 Difference]: Without dead ends: 706 [2021-10-06 21:30:59,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 6540.6ms TimeCoverageRelationStatistics Valid=370, Invalid=1352, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:30:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-06 21:30:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 424. [2021-10-06 21:30:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 3.0307328605200947) internal successors, (1282), 423 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states 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 21:30:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1282 transitions. [2021-10-06 21:30:59,363 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1282 transitions. Word has length 18 [2021-10-06 21:30:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:59,363 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1282 transitions. [2021-10-06 21:30:59,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1282 transitions. [2021-10-06 21:30:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:30:59,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:59,366 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:59,381 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 21:30:59,579 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 21:30:59,580 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:59,581 INFO L82 PathProgramCache]: Analyzing trace with hash 219429906, now seen corresponding path program 25 times [2021-10-06 21:30:59,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:59,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138443240] [2021-10-06 21:30:59,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:59,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:59,584 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 21:30:59,585 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 21:30:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:59,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:30:59,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:00,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:01,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:01,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138443240] [2021-10-06 21:31:01,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138443240] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:01,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:01,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411232235] [2021-10-06 21:31:01,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:31:01,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:31:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:31:01,463 INFO L87 Difference]: Start difference. First operand 424 states and 1282 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:07,230 INFO L93 Difference]: Finished difference Result 736 states and 2041 transitions. [2021-10-06 21:31:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:31:07,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:31:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:07,236 INFO L225 Difference]: With dead ends: 736 [2021-10-06 21:31:07,237 INFO L226 Difference]: Without dead ends: 728 [2021-10-06 21:31:07,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 5722.1ms TimeCoverageRelationStatistics Valid=540, Invalid=1440, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:31:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-10-06 21:31:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 440. [2021-10-06 21:31:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.0478359908883825) internal successors, (1338), 439 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 21:31:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1338 transitions. [2021-10-06 21:31:07,253 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1338 transitions. Word has length 18 [2021-10-06 21:31:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:07,253 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1338 transitions. [2021-10-06 21:31:07,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1338 transitions. [2021-10-06 21:31:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:31:07,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:07,255 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:07,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-06 21:31:07,473 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 21:31:07,474 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:07,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1433044294, now seen corresponding path program 26 times [2021-10-06 21:31:07,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:07,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47712076] [2021-10-06 21:31:07,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:31:07,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:07,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:07,476 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 21:31:07,513 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 21:31:07,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:31:07,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:07,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:31:07,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:08,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:09,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:09,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47712076] [2021-10-06 21:31:09,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47712076] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:09,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:09,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:31:09,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523418981] [2021-10-06 21:31:09,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:31:09,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:31:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:31:09,162 INFO L87 Difference]: Start difference. First operand 440 states and 1338 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:13,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:13,169 INFO L93 Difference]: Finished difference Result 548 states and 1623 transitions. [2021-10-06 21:31:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:31:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:31:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:13,173 INFO L225 Difference]: With dead ends: 548 [2021-10-06 21:31:13,173 INFO L226 Difference]: Without dead ends: 546 [2021-10-06 21:31:13,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 4026.5ms TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:31:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-06 21:31:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 436. [2021-10-06 21:31:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.0436781609195402) internal successors, (1324), 435 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states 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 21:31:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1324 transitions. [2021-10-06 21:31:13,187 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1324 transitions. Word has length 18 [2021-10-06 21:31:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:13,188 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1324 transitions. [2021-10-06 21:31:13,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:13,188 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1324 transitions. [2021-10-06 21:31:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:31:13,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:13,190 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:13,205 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 21:31:13,403 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 21:31:13,404 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1604125626, now seen corresponding path program 27 times [2021-10-06 21:31:13,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:13,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980687095] [2021-10-06 21:31:13,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:31:13,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:13,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:13,407 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 21:31:13,408 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 21:31:13,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:31:13,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:13,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:31:13,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:14,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:15,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:15,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980687095] [2021-10-06 21:31:15,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980687095] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:15,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997727891] [2021-10-06 21:31:15,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:31:15,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:31:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:31:15,077 INFO L87 Difference]: Start difference. First operand 436 states and 1324 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:22,114 INFO L93 Difference]: Finished difference Result 682 states and 1866 transitions. [2021-10-06 21:31:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:31:22,115 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:31:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:22,118 INFO L225 Difference]: With dead ends: 682 [2021-10-06 21:31:22,118 INFO L226 Difference]: Without dead ends: 678 [2021-10-06 21:31:22,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 6626.6ms TimeCoverageRelationStatistics Valid=616, Invalid=1736, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:31:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-10-06 21:31:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 456. [2021-10-06 21:31:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 3.0681318681318683) internal successors, (1396), 455 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states 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 21:31:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1396 transitions. [2021-10-06 21:31:22,132 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1396 transitions. Word has length 18 [2021-10-06 21:31:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:22,132 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1396 transitions. [2021-10-06 21:31:22,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1396 transitions. [2021-10-06 21:31:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:31:22,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:22,134 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:22,151 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 21:31:22,347 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 21:31:22,348 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash 748818972, now seen corresponding path program 28 times [2021-10-06 21:31:22,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:22,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778484544] [2021-10-06 21:31:22,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:22,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:22,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:22,352 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 21:31:22,353 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 21:31:22,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:22,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:22,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:31:22,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:23,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:24,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:24,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778484544] [2021-10-06 21:31:24,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778484544] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:24,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:24,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:24,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111598649] [2021-10-06 21:31:24,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:31:24,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:24,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:31:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:31:24,370 INFO L87 Difference]: Start difference. First operand 456 states and 1396 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:34,330 INFO L93 Difference]: Finished difference Result 716 states and 1918 transitions. [2021-10-06 21:31:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:31:34,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:31:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:34,336 INFO L225 Difference]: With dead ends: 716 [2021-10-06 21:31:34,336 INFO L226 Difference]: Without dead ends: 716 [2021-10-06 21:31:34,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 9279.1ms TimeCoverageRelationStatistics Valid=464, Invalid=1698, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:31:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-06 21:31:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 462. [2021-10-06 21:31:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 3.06941431670282) internal successors, (1415), 461 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states 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 21:31:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1415 transitions. [2021-10-06 21:31:34,353 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1415 transitions. Word has length 18 [2021-10-06 21:31:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:34,353 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 1415 transitions. [2021-10-06 21:31:34,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1415 transitions. [2021-10-06 21:31:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:31:34,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:34,356 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:34,368 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 21:31:34,562 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 21:31:34,562 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:34,563 INFO L82 PathProgramCache]: Analyzing trace with hash -55117858, now seen corresponding path program 29 times [2021-10-06 21:31:34,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:34,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192970720] [2021-10-06 21:31:34,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:34,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:34,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:34,566 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 21:31:34,568 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 21:31:34,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:31:34,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:34,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:31:34,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:35,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:36,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:36,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192970720] [2021-10-06 21:31:36,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192970720] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:36,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:36,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:31:36,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899706811] [2021-10-06 21:31:36,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:31:36,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:31:36,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:31:36,214 INFO L87 Difference]: Start difference. First operand 462 states and 1415 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:44,121 INFO L93 Difference]: Finished difference Result 748 states and 2041 transitions. [2021-10-06 21:31:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:31:44,122 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:31:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:44,126 INFO L225 Difference]: With dead ends: 748 [2021-10-06 21:31:44,126 INFO L226 Difference]: Without dead ends: 728 [2021-10-06 21:31:44,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 7604.8ms TimeCoverageRelationStatistics Valid=513, Invalid=1937, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:31:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-10-06 21:31:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 474. [2021-10-06 21:31:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 3.063424947145877) internal successors, (1449), 473 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 21:31:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1449 transitions. [2021-10-06 21:31:44,157 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1449 transitions. Word has length 18 [2021-10-06 21:31:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:44,157 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 1449 transitions. [2021-10-06 21:31:44,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1449 transitions. [2021-10-06 21:31:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:31:44,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:44,160 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:44,177 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 21:31:44,373 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 21:31:44,374 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash 55486298, now seen corresponding path program 30 times [2021-10-06 21:31:44,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:44,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663120547] [2021-10-06 21:31:44,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:44,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:44,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:44,378 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 21:31:44,380 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 21:31:44,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:31:44,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:44,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:31:44,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:45,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:46,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:46,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663120547] [2021-10-06 21:31:46,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663120547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:46,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:46,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:31:46,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339061470] [2021-10-06 21:31:46,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:31:46,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:31:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:31:46,326 INFO L87 Difference]: Start difference. First operand 474 states and 1449 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:55,764 INFO L93 Difference]: Finished difference Result 726 states and 1995 transitions. [2021-10-06 21:31:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:31:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:31:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:55,771 INFO L225 Difference]: With dead ends: 726 [2021-10-06 21:31:55,772 INFO L226 Difference]: Without dead ends: 726 [2021-10-06 21:31:55,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 8860.0ms TimeCoverageRelationStatistics Valid=553, Invalid=1703, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:31:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-10-06 21:31:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 504. [2021-10-06 21:31:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.10934393638171) internal successors, (1564), 503 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 21:31:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1564 transitions. [2021-10-06 21:31:55,785 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1564 transitions. Word has length 18 [2021-10-06 21:31:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:55,785 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1564 transitions. [2021-10-06 21:31:55,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1564 transitions. [2021-10-06 21:31:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:31:55,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:55,787 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:55,798 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 21:31:55,991 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 21:31:55,991 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1659289532, now seen corresponding path program 31 times [2021-10-06 21:31:55,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:55,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180111010] [2021-10-06 21:31:55,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:31:55,994 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:55,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:55,995 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 21:31:56,002 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 21:31:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:31:56,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:31:56,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:56,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:57,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:57,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180111010] [2021-10-06 21:31:57,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180111010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:57,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:57,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:31:57,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038630314] [2021-10-06 21:31:57,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:31:57,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:31:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:31:57,637 INFO L87 Difference]: Start difference. First operand 504 states and 1564 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:02,801 INFO L93 Difference]: Finished difference Result 562 states and 1730 transitions. [2021-10-06 21:32:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:32:02,802 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:32:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:02,805 INFO L225 Difference]: With dead ends: 562 [2021-10-06 21:32:02,805 INFO L226 Difference]: Without dead ends: 556 [2021-10-06 21:32:02,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 4885.1ms TimeCoverageRelationStatistics Valid=413, Invalid=1069, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:32:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-06 21:32:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 516. [2021-10-06 21:32:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 3.0834951456310677) internal successors, (1588), 515 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states 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 21:32:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1588 transitions. [2021-10-06 21:32:02,819 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1588 transitions. Word has length 18 [2021-10-06 21:32:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:02,819 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1588 transitions. [2021-10-06 21:32:02,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1588 transitions. [2021-10-06 21:32:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:32:02,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:02,822 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:02,836 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 21:32:03,035 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 21:32:03,036 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1201007972, now seen corresponding path program 32 times [2021-10-06 21:32:03,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:03,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911487665] [2021-10-06 21:32:03,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:32:03,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:03,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:03,040 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 21:32:03,044 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 21:32:03,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:03,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:03,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:32:03,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:03,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:05,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:05,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911487665] [2021-10-06 21:32:05,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911487665] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:05,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:05,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:32:05,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022399165] [2021-10-06 21:32:05,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:32:05,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:32:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:32:05,240 INFO L87 Difference]: Start difference. First operand 516 states and 1588 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:15,425 INFO L93 Difference]: Finished difference Result 812 states and 2228 transitions. [2021-10-06 21:32:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:32:15,426 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:32:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:15,431 INFO L225 Difference]: With dead ends: 812 [2021-10-06 21:32:15,431 INFO L226 Difference]: Without dead ends: 796 [2021-10-06 21:32:15,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 9794.6ms TimeCoverageRelationStatistics Valid=533, Invalid=1917, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:32:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-06 21:32:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 540. [2021-10-06 21:32:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 3.098330241187384) internal successors, (1670), 539 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states 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 21:32:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1670 transitions. [2021-10-06 21:32:15,447 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1670 transitions. Word has length 18 [2021-10-06 21:32:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:15,448 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 1670 transitions. [2021-10-06 21:32:15,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1670 transitions. [2021-10-06 21:32:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:32:15,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:15,450 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:15,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-10-06 21:32:15,658 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 21:32:15,659 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1569516882, now seen corresponding path program 33 times [2021-10-06 21:32:15,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:15,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004779250] [2021-10-06 21:32:15,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:32:15,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:15,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:15,662 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 21:32:15,665 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 21:32:16,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:32:16,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:16,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:32:16,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:16,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:17,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:17,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004779250] [2021-10-06 21:32:17,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004779250] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:17,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:17,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:32:17,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190787480] [2021-10-06 21:32:17,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:32:17,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:32:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:32:17,965 INFO L87 Difference]: Start difference. First operand 540 states and 1670 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:24,746 INFO L93 Difference]: Finished difference Result 814 states and 2301 transitions. [2021-10-06 21:32:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:32:24,747 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:32:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:24,753 INFO L225 Difference]: With dead ends: 814 [2021-10-06 21:32:24,753 INFO L226 Difference]: Without dead ends: 806 [2021-10-06 21:32:24,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 6264.1ms TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:32:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-06 21:32:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 564. [2021-10-06 21:32:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 3.1012433392539966) internal successors, (1746), 563 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states 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 21:32:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1746 transitions. [2021-10-06 21:32:24,772 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1746 transitions. Word has length 18 [2021-10-06 21:32:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:24,773 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1746 transitions. [2021-10-06 21:32:24,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1746 transitions. [2021-10-06 21:32:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:32:24,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:24,775 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:24,791 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 21:32:24,988 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 21:32:24,989 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash -82957318, now seen corresponding path program 34 times [2021-10-06 21:32:24,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:24,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320002522] [2021-10-06 21:32:24,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:32:24,991 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:24,992 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 21:32:24,993 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 21:32:25,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:32:25,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:25,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:32:25,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:25,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:26,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:26,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320002522] [2021-10-06 21:32:26,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320002522] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:26,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:26,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:32:26,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796553519] [2021-10-06 21:32:26,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:32:26,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:32:26,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:32:26,829 INFO L87 Difference]: Start difference. First operand 564 states and 1746 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:31,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:31,216 INFO L93 Difference]: Finished difference Result 628 states and 1949 transitions. [2021-10-06 21:32:31,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:32:31,216 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:32:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:31,220 INFO L225 Difference]: With dead ends: 628 [2021-10-06 21:32:31,220 INFO L226 Difference]: Without dead ends: 622 [2021-10-06 21:32:31,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3850.5ms TimeCoverageRelationStatistics Valid=263, Invalid=607, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:32:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-06 21:32:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 584. [2021-10-06 21:32:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 3.118353344768439) internal successors, (1818), 583 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states 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 21:32:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1818 transitions. [2021-10-06 21:32:31,234 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1818 transitions. Word has length 18 [2021-10-06 21:32:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:31,234 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1818 transitions. [2021-10-06 21:32:31,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1818 transitions. [2021-10-06 21:32:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:32:31,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:31,236 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:31,252 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 21:32:31,443 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 21:32:31,444 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:31,445 INFO L82 PathProgramCache]: Analyzing trace with hash 548230028, now seen corresponding path program 35 times [2021-10-06 21:32:31,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:31,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240219885] [2021-10-06 21:32:31,446 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:32:31,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:31,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:31,447 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 21:32:31,448 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 21:32:31,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:32:31,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:31,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:32:31,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:32,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:33,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:33,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240219885] [2021-10-06 21:32:33,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240219885] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:33,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:33,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:32:33,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457005877] [2021-10-06 21:32:33,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:32:33,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:32:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:32:33,327 INFO L87 Difference]: Start difference. First operand 584 states and 1818 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:37,561 INFO L93 Difference]: Finished difference Result 830 states and 2396 transitions. [2021-10-06 21:32:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:32:37,562 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:32:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:37,569 INFO L225 Difference]: With dead ends: 830 [2021-10-06 21:32:37,570 INFO L226 Difference]: Without dead ends: 822 [2021-10-06 21:32:37,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 3920.8ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:32:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-10-06 21:32:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 582. [2021-10-06 21:32:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 3.1204819277108435) internal successors, (1813), 581 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states 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 21:32:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1813 transitions. [2021-10-06 21:32:37,591 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1813 transitions. Word has length 18 [2021-10-06 21:32:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:37,591 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 1813 transitions. [2021-10-06 21:32:37,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1813 transitions. [2021-10-06 21:32:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:32:37,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:37,594 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:37,610 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 21:32:37,807 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 21:32:37,808 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1964344000, now seen corresponding path program 36 times [2021-10-06 21:32:37,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:37,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228741316] [2021-10-06 21:32:37,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:32:37,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:37,811 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 21:32:37,812 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 21:32:38,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:32:38,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:38,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:32:38,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:38,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:40,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:40,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228741316] [2021-10-06 21:32:40,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228741316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:40,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:40,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:32:40,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015572923] [2021-10-06 21:32:40,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:32:40,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:40,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:32:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:32:40,538 INFO L87 Difference]: Start difference. First operand 582 states and 1813 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:54,875 INFO L93 Difference]: Finished difference Result 958 states and 2643 transitions. [2021-10-06 21:32:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:32:54,877 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:32:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:54,881 INFO L225 Difference]: With dead ends: 958 [2021-10-06 21:32:54,881 INFO L226 Difference]: Without dead ends: 958 [2021-10-06 21:32:54,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 13660.6ms TimeCoverageRelationStatistics Valid=527, Invalid=2335, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:32:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-06 21:32:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 626. [2021-10-06 21:32:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 3.1696) internal successors, (1981), 625 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states 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 21:32:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1981 transitions. [2021-10-06 21:32:54,901 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1981 transitions. Word has length 19 [2021-10-06 21:32:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:54,901 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 1981 transitions. [2021-10-06 21:32:54,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1981 transitions. [2021-10-06 21:32:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:32:54,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:54,904 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:54,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-06 21:32:55,104 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 21:32:55,105 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 719682338, now seen corresponding path program 37 times [2021-10-06 21:32:55,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:55,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081804263] [2021-10-06 21:32:55,107 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:32:55,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:55,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:55,109 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 21:32:55,123 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 21:32:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:55,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:32:55,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:32:55,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:56,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:56,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081804263] [2021-10-06 21:32:56,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081804263] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:56,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:56,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 10 [2021-10-06 21:32:56,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994261700] [2021-10-06 21:32:56,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:32:56,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:32:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:32:56,279 INFO L87 Difference]: Start difference. First operand 626 states and 1981 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:56,367 INFO L93 Difference]: Finished difference Result 787 states and 2407 transitions. [2021-10-06 21:32:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:32:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:32:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:56,371 INFO L225 Difference]: With dead ends: 787 [2021-10-06 21:32:56,371 INFO L226 Difference]: Without dead ends: 720 [2021-10-06 21:32:56,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 218.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:32:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-10-06 21:32:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 648. [2021-10-06 21:32:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 3.2102009273570324) internal successors, (2077), 647 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states 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 21:32:56,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 2077 transitions. [2021-10-06 21:32:56,385 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 2077 transitions. Word has length 19 [2021-10-06 21:32:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:56,386 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 2077 transitions. [2021-10-06 21:32:56,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 2077 transitions. [2021-10-06 21:32:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:32:56,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:56,387 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:56,398 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 21:32:56,588 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 21:32:56,588 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:56,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:56,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1640084600, now seen corresponding path program 38 times [2021-10-06 21:32:56,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:56,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990336832] [2021-10-06 21:32:56,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:32:56,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:56,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:56,591 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 21:32:56,592 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 21:32:57,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:57,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:57,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:32:57,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:57,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:58,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:58,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990336832] [2021-10-06 21:32:58,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990336832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:58,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:58,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-06 21:32:58,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048565186] [2021-10-06 21:32:58,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:58,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:58,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:58,282 INFO L87 Difference]: Start difference. First operand 648 states and 2077 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:03,984 INFO L93 Difference]: Finished difference Result 1016 states and 3013 transitions. [2021-10-06 21:33:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:33:03,985 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:33:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:03,988 INFO L225 Difference]: With dead ends: 1016 [2021-10-06 21:33:03,988 INFO L226 Difference]: Without dead ends: 1016 [2021-10-06 21:33:03,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 5428.3ms TimeCoverageRelationStatistics Valid=468, Invalid=1424, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:33:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-06 21:33:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 656. [2021-10-06 21:33:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 3.2076335877862596) internal successors, (2101), 655 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states 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 21:33:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2101 transitions. [2021-10-06 21:33:04,006 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2101 transitions. Word has length 19 [2021-10-06 21:33:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:04,007 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 2101 transitions. [2021-10-06 21:33:04,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2101 transitions. [2021-10-06 21:33:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:33:04,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:04,009 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:04,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-06 21:33:04,209 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 21:33:04,210 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash -989427592, now seen corresponding path program 39 times [2021-10-06 21:33:04,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:04,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095582614] [2021-10-06 21:33:04,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:33:04,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:04,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:04,213 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 21:33:04,214 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 21:33:04,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:33:04,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:04,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:33:04,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:33:04,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:33:05,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:05,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095582614] [2021-10-06 21:33:05,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095582614] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:05,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:05,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:33:05,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635027545] [2021-10-06 21:33:05,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:33:05,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:05,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:33:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:33:05,214 INFO L87 Difference]: Start difference. First operand 656 states and 2101 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:05,517 INFO L93 Difference]: Finished difference Result 780 states and 2418 transitions. [2021-10-06 21:33:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:33:05,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:33:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:05,521 INFO L225 Difference]: With dead ends: 780 [2021-10-06 21:33:05,521 INFO L226 Difference]: Without dead ends: 780 [2021-10-06 21:33:05,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 193.1ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:33:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-06 21:33:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 620. [2021-10-06 21:33:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.2035541195476576) internal successors, (1983), 619 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states 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 21:33:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1983 transitions. [2021-10-06 21:33:05,537 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1983 transitions. Word has length 19 [2021-10-06 21:33:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:05,537 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 1983 transitions. [2021-10-06 21:33:05,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1983 transitions. [2021-10-06 21:33:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:33:05,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:05,539 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:05,550 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 21:33:05,740 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 21:33:05,740 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:05,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:05,741 INFO L82 PathProgramCache]: Analyzing trace with hash 402040044, now seen corresponding path program 40 times [2021-10-06 21:33:05,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:05,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693341241] [2021-10-06 21:33:05,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:33:05,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:05,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:05,743 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 21:33:05,744 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 21:33:06,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:33:06,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:06,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:33:06,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:06,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:08,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:08,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693341241] [2021-10-06 21:33:08,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693341241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:08,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:08,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:33:08,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245800436] [2021-10-06 21:33:08,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:33:08,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:33:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:33:08,045 INFO L87 Difference]: Start difference. First operand 620 states and 1983 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:22,454 INFO L93 Difference]: Finished difference Result 1144 states and 3191 transitions. [2021-10-06 21:33:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:33:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:33:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:22,458 INFO L225 Difference]: With dead ends: 1144 [2021-10-06 21:33:22,458 INFO L226 Difference]: Without dead ends: 1128 [2021-10-06 21:33:22,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 13629.1ms TimeCoverageRelationStatistics Valid=816, Invalid=3344, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:33:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-10-06 21:33:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 634. [2021-10-06 21:33:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.2101105845181674) internal successors, (2032), 633 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states 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 21:33:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2032 transitions. [2021-10-06 21:33:22,479 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2032 transitions. Word has length 19 [2021-10-06 21:33:22,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:22,479 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 2032 transitions. [2021-10-06 21:33:22,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2032 transitions. [2021-10-06 21:33:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:33:22,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:22,481 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:22,495 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 21:33:22,681 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 21:33:22,682 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash -176722538, now seen corresponding path program 41 times [2021-10-06 21:33:22,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:22,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167438894] [2021-10-06 21:33:22,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:33:22,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:22,686 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 21:33:22,688 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 21:33:23,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:33:23,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:23,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:33:23,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:23,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:24,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:24,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167438894] [2021-10-06 21:33:24,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167438894] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:24,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:24,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:33:24,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083144855] [2021-10-06 21:33:24,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:33:24,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:24,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:33:24,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:33:24,845 INFO L87 Difference]: Start difference. First operand 634 states and 2032 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:37,374 INFO L93 Difference]: Finished difference Result 1020 states and 2887 transitions. [2021-10-06 21:33:37,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-06 21:33:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:33:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:37,379 INFO L225 Difference]: With dead ends: 1020 [2021-10-06 21:33:37,379 INFO L226 Difference]: Without dead ends: 1020 [2021-10-06 21:33:37,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 11871.2ms TimeCoverageRelationStatistics Valid=801, Invalid=3891, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 21:33:37,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-06 21:33:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 624. [2021-10-06 21:33:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 3.20545746388443) internal successors, (1997), 623 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states 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 21:33:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1997 transitions. [2021-10-06 21:33:37,396 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1997 transitions. Word has length 19 [2021-10-06 21:33:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:37,397 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 1997 transitions. [2021-10-06 21:33:37,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1997 transitions. [2021-10-06 21:33:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:33:37,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:37,398 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:37,410 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 21:33:37,599 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 21:33:37,599 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:37,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1614300186, now seen corresponding path program 42 times [2021-10-06 21:33:37,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:37,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640613713] [2021-10-06 21:33:37,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:33:37,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:37,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:37,603 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 21:33:37,604 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 21:33:38,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:33:38,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:38,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:33:38,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:38,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:40,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:40,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640613713] [2021-10-06 21:33:40,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640613713] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:40,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:40,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-06 21:33:40,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190787682] [2021-10-06 21:33:40,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:40,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:40,105 INFO L87 Difference]: Start difference. First operand 624 states and 1997 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:52,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:52,015 INFO L93 Difference]: Finished difference Result 932 states and 2645 transitions. [2021-10-06 21:33:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:33:52,017 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:33:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:52,019 INFO L225 Difference]: With dead ends: 932 [2021-10-06 21:33:52,019 INFO L226 Difference]: Without dead ends: 932 [2021-10-06 21:33:52,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 10948.6ms TimeCoverageRelationStatistics Valid=418, Invalid=1474, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:33:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-10-06 21:33:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 660. [2021-10-06 21:33:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 3.245827010622155) internal successors, (2139), 659 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states 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 21:33:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2139 transitions. [2021-10-06 21:33:52,037 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2139 transitions. Word has length 19 [2021-10-06 21:33:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:52,037 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2139 transitions. [2021-10-06 21:33:52,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:52,037 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2139 transitions. [2021-10-06 21:33:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:33:52,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:52,039 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:52,051 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 21:33:52,239 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 21:33:52,240 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash -87095768, now seen corresponding path program 43 times [2021-10-06 21:33:52,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:52,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513451905] [2021-10-06 21:33:52,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:33:52,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:52,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:52,244 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 21:33:52,244 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 21:33:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:33:52,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:33:52,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:53,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:54,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:54,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513451905] [2021-10-06 21:33:54,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513451905] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:54,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:54,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:33:54,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903381545] [2021-10-06 21:33:54,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:33:54,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:54,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:33:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:33:54,651 INFO L87 Difference]: Start difference. First operand 660 states and 2139 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:05,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:05,853 INFO L93 Difference]: Finished difference Result 956 states and 2838 transitions. [2021-10-06 21:34:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:34:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:34:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:05,858 INFO L225 Difference]: With dead ends: 956 [2021-10-06 21:34:05,858 INFO L226 Difference]: Without dead ends: 956 [2021-10-06 21:34:05,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 10508.1ms TimeCoverageRelationStatistics Valid=762, Invalid=2208, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:34:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-06 21:34:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 672. [2021-10-06 21:34:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 3.277198211624441) internal successors, (2199), 671 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states 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 21:34:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 2199 transitions. [2021-10-06 21:34:05,873 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 2199 transitions. Word has length 19 [2021-10-06 21:34:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:05,874 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 2199 transitions. [2021-10-06 21:34:05,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 2199 transitions. [2021-10-06 21:34:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:34:05,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:05,875 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:05,888 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 21:34:06,076 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 21:34:06,076 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:34:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1499335530, now seen corresponding path program 44 times [2021-10-06 21:34:06,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:06,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474415564] [2021-10-06 21:34:06,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:34:06,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:06,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:06,079 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 21:34:06,080 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 21:34:06,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:34:06,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:06,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:34:06,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:07,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:08,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:08,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474415564] [2021-10-06 21:34:08,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474415564] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:08,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:08,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-06 21:34:08,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120369300] [2021-10-06 21:34:08,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:08,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:08,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:08,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:08,639 INFO L87 Difference]: Start difference. First operand 672 states and 2199 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:23,976 INFO L93 Difference]: Finished difference Result 996 states and 2922 transitions. [2021-10-06 21:34:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:34:23,978 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:34:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:23,982 INFO L225 Difference]: With dead ends: 996 [2021-10-06 21:34:23,982 INFO L226 Difference]: Without dead ends: 996 [2021-10-06 21:34:23,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 14609.2ms TimeCoverageRelationStatistics Valid=519, Invalid=1931, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:34:23,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-10-06 21:34:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 712. [2021-10-06 21:34:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 3.329113924050633) internal successors, (2367), 711 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states 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 21:34:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2367 transitions. [2021-10-06 21:34:24,001 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2367 transitions. Word has length 19 [2021-10-06 21:34:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:24,001 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 2367 transitions. [2021-10-06 21:34:24,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2367 transitions. [2021-10-06 21:34:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:34:24,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:24,003 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:24,015 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 21:34:24,203 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 21:34:24,204 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:34:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:24,205 INFO L82 PathProgramCache]: Analyzing trace with hash 743701226, now seen corresponding path program 45 times [2021-10-06 21:34:24,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:24,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561772429] [2021-10-06 21:34:24,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:34:24,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:24,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:24,208 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 21:34:24,209 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 21:34:24,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:34:24,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:24,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:34:24,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:25,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:26,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:26,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561772429] [2021-10-06 21:34:26,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561772429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:26,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:26,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-06 21:34:26,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809828469] [2021-10-06 21:34:26,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:26,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:26,439 INFO L87 Difference]: Start difference. First operand 712 states and 2367 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:37,365 INFO L93 Difference]: Finished difference Result 1114 states and 3236 transitions. [2021-10-06 21:34:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:34:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:34:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:37,369 INFO L225 Difference]: With dead ends: 1114 [2021-10-06 21:34:37,369 INFO L226 Difference]: Without dead ends: 1108 [2021-10-06 21:34:37,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 10153.2ms TimeCoverageRelationStatistics Valid=906, Invalid=2754, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:34:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-06 21:34:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 754. [2021-10-06 21:34:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 3.3705179282868527) internal successors, (2538), 753 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states 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 21:34:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2538 transitions. [2021-10-06 21:34:37,391 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2538 transitions. Word has length 19 [2021-10-06 21:34:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:37,392 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 2538 transitions. [2021-10-06 21:34:37,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2538 transitions. [2021-10-06 21:34:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:34:37,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:37,395 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:37,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-06 21:34:37,610 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 21:34:37,611 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:34:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:37,612 INFO L82 PathProgramCache]: Analyzing trace with hash -54943438, now seen corresponding path program 46 times [2021-10-06 21:34:37,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:37,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004365608] [2021-10-06 21:34:37,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:34:37,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:37,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:37,614 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 21:34:37,642 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 21:34:38,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:34:38,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:38,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:34:38,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:38,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:40,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:40,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004365608] [2021-10-06 21:34:40,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004365608] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:40,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:40,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:34:40,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059885437] [2021-10-06 21:34:40,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:34:40,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:34:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:34:40,739 INFO L87 Difference]: Start difference. First operand 754 states and 2538 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:56,153 INFO L93 Difference]: Finished difference Result 1088 states and 3271 transitions. [2021-10-06 21:34:56,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:34:56,154 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:34:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:56,158 INFO L225 Difference]: With dead ends: 1088 [2021-10-06 21:34:56,159 INFO L226 Difference]: Without dead ends: 1088 [2021-10-06 21:34:56,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 14012.4ms TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:34:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-10-06 21:34:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 750. [2021-10-06 21:34:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 3.3724966622162884) internal successors, (2526), 749 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states 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 21:34:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2526 transitions. [2021-10-06 21:34:56,183 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2526 transitions. Word has length 19 [2021-10-06 21:34:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:56,184 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2526 transitions. [2021-10-06 21:34:56,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2526 transitions. [2021-10-06 21:34:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:34:56,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:56,187 INFO L512 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:56,206 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 21:34:56,400 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 21:34:56,400 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:34:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:56,401 INFO L82 PathProgramCache]: Analyzing trace with hash 176993602, now seen corresponding path program 47 times [2021-10-06 21:34:56,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:56,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547663011] [2021-10-06 21:34:56,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:34:56,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:56,403 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 21:34:56,404 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 21:34:57,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:34:57,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:57,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:34:57,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:57,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:59,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:59,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547663011] [2021-10-06 21:34:59,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547663011] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:59,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:59,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:34:59,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606272837] [2021-10-06 21:34:59,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:34:59,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:34:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:34:59,293 INFO L87 Difference]: Start difference. First operand 750 states and 2526 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:13,159 INFO L93 Difference]: Finished difference Result 1136 states and 3414 transitions. [2021-10-06 21:35:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:35:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:13,165 INFO L225 Difference]: With dead ends: 1136 [2021-10-06 21:35:13,165 INFO L226 Difference]: Without dead ends: 1100 [2021-10-06 21:35:13,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 13427.0ms TimeCoverageRelationStatistics Valid=585, Invalid=1865, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:35:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-06 21:35:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 792. [2021-10-06 21:35:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 3.336283185840708) internal successors, (2639), 791 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states 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 21:35:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2639 transitions. [2021-10-06 21:35:13,190 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2639 transitions. Word has length 20 [2021-10-06 21:35:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:13,190 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2639 transitions. [2021-10-06 21:35:13,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2639 transitions. [2021-10-06 21:35:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:13,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:13,193 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:13,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-10-06 21:35:13,407 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 21:35:13,408 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:13,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:13,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1496248986, now seen corresponding path program 48 times [2021-10-06 21:35:13,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:13,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166444353] [2021-10-06 21:35:13,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:35:13,410 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:13,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:13,411 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 21:35:13,412 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 21:35:14,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:35:14,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:14,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:35:14,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:14,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:17,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:17,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166444353] [2021-10-06 21:35:17,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166444353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:17,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:17,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:35:17,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27035860] [2021-10-06 21:35:17,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:35:17,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:17,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:35:17,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:35:17,617 INFO L87 Difference]: Start difference. First operand 792 states and 2639 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:42,992 INFO L93 Difference]: Finished difference Result 1212 states and 3611 transitions. [2021-10-06 21:35:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:35:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:42,998 INFO L225 Difference]: With dead ends: 1212 [2021-10-06 21:35:42,998 INFO L226 Difference]: Without dead ends: 1212 [2021-10-06 21:35:42,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 24973.6ms TimeCoverageRelationStatistics Valid=644, Invalid=2662, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:35:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-10-06 21:35:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 854. [2021-10-06 21:35:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.364595545134818) internal successors, (2870), 853 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states 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 21:35:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2870 transitions. [2021-10-06 21:35:43,026 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2870 transitions. Word has length 20 [2021-10-06 21:35:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:43,026 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2870 transitions. [2021-10-06 21:35:43,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2870 transitions. [2021-10-06 21:35:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:43,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:43,029 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:43,047 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 21:35:43,244 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 21:35:43,244 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:43,245 INFO L82 PathProgramCache]: Analyzing trace with hash 848891366, now seen corresponding path program 49 times [2021-10-06 21:35:43,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:43,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664251729] [2021-10-06 21:35:43,246 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:35:43,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:43,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:43,248 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 21:35:43,249 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 21:35:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:35:44,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:35:44,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:44,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:47,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:47,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664251729] [2021-10-06 21:35:47,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664251729] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:47,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:47,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:35:47,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991218368] [2021-10-06 21:35:47,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:35:47,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:35:47,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:35:47,417 INFO L87 Difference]: Start difference. First operand 854 states and 2870 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:06,904 INFO L93 Difference]: Finished difference Result 1252 states and 3819 transitions. [2021-10-06 21:36:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:36:06,906 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:36:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:06,908 INFO L225 Difference]: With dead ends: 1252 [2021-10-06 21:36:06,908 INFO L226 Difference]: Without dead ends: 1236 [2021-10-06 21:36:06,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 18668.1ms TimeCoverageRelationStatistics Valid=556, Invalid=2200, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:36:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-10-06 21:36:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 920. [2021-10-06 21:36:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 3.380848748639826) internal successors, (3107), 919 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 21:36:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 3107 transitions. [2021-10-06 21:36:06,928 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 3107 transitions. Word has length 20 [2021-10-06 21:36:06,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:06,928 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 3107 transitions. [2021-10-06 21:36:06,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 3107 transitions. [2021-10-06 21:36:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:36:06,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:06,931 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:06,951 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 21:36:07,144 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 21:36:07,144 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:07,145 INFO L82 PathProgramCache]: Analyzing trace with hash 959495522, now seen corresponding path program 50 times [2021-10-06 21:36:07,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:07,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301037929] [2021-10-06 21:36:07,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:36:07,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:07,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:07,148 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 21:36:07,152 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 21:36:08,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:36:08,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:08,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:36:08,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:08,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:11,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:11,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301037929] [2021-10-06 21:36:11,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301037929] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:11,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:11,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:36:11,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27782605] [2021-10-06 21:36:11,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:36:11,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:36:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:36:11,670 INFO L87 Difference]: Start difference. First operand 920 states and 3107 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:28,910 INFO L93 Difference]: Finished difference Result 1266 states and 3940 transitions. [2021-10-06 21:36:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:36:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:36:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:28,914 INFO L225 Difference]: With dead ends: 1266 [2021-10-06 21:36:28,914 INFO L226 Difference]: Without dead ends: 1258 [2021-10-06 21:36:28,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 16021.2ms TimeCoverageRelationStatistics Valid=631, Invalid=1721, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:36:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2021-10-06 21:36:28,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 954. [2021-10-06 21:36:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 3.4018887722980065) internal successors, (3242), 953 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states 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 21:36:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 3242 transitions. [2021-10-06 21:36:28,934 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 3242 transitions. Word has length 20 [2021-10-06 21:36:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:28,934 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 3242 transitions. [2021-10-06 21:36:28,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 3242 transitions. [2021-10-06 21:36:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:36:28,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:28,937 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:28,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-06 21:36:29,137 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 21:36:29,138 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:29,139 INFO L82 PathProgramCache]: Analyzing trace with hash -692978678, now seen corresponding path program 51 times [2021-10-06 21:36:29,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:29,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555929751] [2021-10-06 21:36:29,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:36:29,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:29,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:29,141 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 21:36:29,142 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 21:36:30,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-06 21:36:30,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:30,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:36:30,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:30,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:32,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:32,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555929751] [2021-10-06 21:36:32,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555929751] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:32,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:32,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-06 21:36:32,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143753365] [2021-10-06 21:36:32,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:36:32,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:32,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:36:32,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:36:32,850 INFO L87 Difference]: Start difference. First operand 954 states and 3242 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:42,536 INFO L93 Difference]: Finished difference Result 1036 states and 3432 transitions. [2021-10-06 21:36:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:36:42,538 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:36:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:42,541 INFO L225 Difference]: With dead ends: 1036 [2021-10-06 21:36:42,542 INFO L226 Difference]: Without dead ends: 1034 [2021-10-06 21:36:42,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 9561.3ms TimeCoverageRelationStatistics Valid=399, Invalid=1161, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:36:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-10-06 21:36:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 958. [2021-10-06 21:36:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.4085684430512018) internal successors, (3262), 957 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states 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 21:36:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3262 transitions. [2021-10-06 21:36:42,568 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3262 transitions. Word has length 20 [2021-10-06 21:36:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:42,568 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 3262 transitions. [2021-10-06 21:36:42,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3262 transitions. [2021-10-06 21:36:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:36:42,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:42,570 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:42,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-10-06 21:36:42,778 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 21:36:42,779 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:42,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1617386730, now seen corresponding path program 52 times [2021-10-06 21:36:42,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:42,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602683603] [2021-10-06 21:36:42,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:36:42,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:42,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:42,782 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 21:36:42,783 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 21:36:43,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:36:43,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:43,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:36:43,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:44,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:46,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:46,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602683603] [2021-10-06 21:36:46,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602683603] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:46,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:46,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:36:46,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863711702] [2021-10-06 21:36:46,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:36:46,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:46,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:36:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:36:46,937 INFO L87 Difference]: Start difference. First operand 958 states and 3262 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:02,572 INFO L93 Difference]: Finished difference Result 1354 states and 4239 transitions. [2021-10-06 21:37:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:37:02,574 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:37:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:02,578 INFO L225 Difference]: With dead ends: 1354 [2021-10-06 21:37:02,578 INFO L226 Difference]: Without dead ends: 1338 [2021-10-06 21:37:02,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 13566.5ms TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:37:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-10-06 21:37:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1020. [2021-10-06 21:37:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 3.4278704612365063) internal successors, (3493), 1019 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 3493 transitions. [2021-10-06 21:37:02,601 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 3493 transitions. Word has length 20 [2021-10-06 21:37:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:02,601 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 3493 transitions. [2021-10-06 21:37:02,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 3493 transitions. [2021-10-06 21:37:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:37:02,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:02,605 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:02,624 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 21:37:02,819 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 21:37:02,819 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:02,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1790292516, now seen corresponding path program 53 times [2021-10-06 21:37:02,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:02,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908937110] [2021-10-06 21:37:02,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:37:02,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:02,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:02,822 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 21:37:02,852 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 21:37:03,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:37:03,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:03,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:37:03,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:04,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:05,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:05,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908937110] [2021-10-06 21:37:05,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908937110] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:05,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:05,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:37:05,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711904562] [2021-10-06 21:37:05,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:37:05,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:37:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:37:05,344 INFO L87 Difference]: Start difference. First operand 1020 states and 3493 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:13,300 INFO L93 Difference]: Finished difference Result 1372 states and 4321 transitions. [2021-10-06 21:37:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:37:13,301 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:37:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:13,304 INFO L225 Difference]: With dead ends: 1372 [2021-10-06 21:37:13,304 INFO L226 Difference]: Without dead ends: 1368 [2021-10-06 21:37:13,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 7255.6ms TimeCoverageRelationStatistics Valid=558, Invalid=1512, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:37:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2021-10-06 21:37:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1060. [2021-10-06 21:37:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 3.4438149197356) internal successors, (3647), 1059 states have internal predecessors, (3647), 0 states have call successors, (0), 0 states 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 21:37:13,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 3647 transitions. [2021-10-06 21:37:13,336 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 3647 transitions. Word has length 20 [2021-10-06 21:37:13,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:13,336 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 3647 transitions. [2021-10-06 21:37:13,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 3647 transitions. [2021-10-06 21:37:13,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:37:13,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:13,339 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:13,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:13,539 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 21:37:13,539 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:13,540 INFO L82 PathProgramCache]: Analyzing trace with hash 596099876, now seen corresponding path program 54 times [2021-10-06 21:37:13,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:13,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537558333] [2021-10-06 21:37:13,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:37:13,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:13,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:13,543 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 21:37:13,544 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 21:37:14,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:37:14,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:14,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:37:14,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:14,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:17,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:17,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537558333] [2021-10-06 21:37:17,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537558333] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:17,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:17,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-06 21:37:17,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812829246] [2021-10-06 21:37:17,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:17,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:17,422 INFO L87 Difference]: Start difference. First operand 1060 states and 3647 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:35,720 INFO L93 Difference]: Finished difference Result 1584 states and 4843 transitions. [2021-10-06 21:37:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:37:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:37:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:35,724 INFO L225 Difference]: With dead ends: 1584 [2021-10-06 21:37:35,724 INFO L226 Difference]: Without dead ends: 1576 [2021-10-06 21:37:35,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 17173.6ms TimeCoverageRelationStatistics Valid=587, Invalid=2383, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:37:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-06 21:37:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1144. [2021-10-06 21:37:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.468941382327209) internal successors, (3965), 1143 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states 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 21:37:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 3965 transitions. [2021-10-06 21:37:35,752 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 3965 transitions. Word has length 20 [2021-10-06 21:37:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:35,753 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 3965 transitions. [2021-10-06 21:37:35,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 3965 transitions. [2021-10-06 21:37:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:37:35,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:35,755 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:35,769 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 21:37:35,956 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 21:37:35,956 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:35,957 INFO L82 PathProgramCache]: Analyzing trace with hash 706704032, now seen corresponding path program 55 times [2021-10-06 21:37:35,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:35,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97541158] [2021-10-06 21:37:35,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:37:35,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:35,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:35,960 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 21:37:35,961 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 21:37:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:37:36,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:37:36,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:37,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:39,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:39,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97541158] [2021-10-06 21:37:39,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97541158] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:39,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:39,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:37:39,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23956750] [2021-10-06 21:37:39,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:37:39,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:37:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:37:39,620 INFO L87 Difference]: Start difference. First operand 1144 states and 3965 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:55,691 INFO L93 Difference]: Finished difference Result 1492 states and 4795 transitions. [2021-10-06 21:37:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:37:55,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:37:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:55,695 INFO L225 Difference]: With dead ends: 1492 [2021-10-06 21:37:55,695 INFO L226 Difference]: Without dead ends: 1484 [2021-10-06 21:37:55,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 15317.3ms TimeCoverageRelationStatistics Valid=509, Invalid=1383, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:37:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-10-06 21:37:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1170. [2021-10-06 21:37:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 3.46792130025663) internal successors, (4054), 1169 states have internal predecessors, (4054), 0 states have call successors, (0), 0 states 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 21:37:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 4054 transitions. [2021-10-06 21:37:55,721 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 4054 transitions. Word has length 20 [2021-10-06 21:37:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:55,722 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 4054 transitions. [2021-10-06 21:37:55,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 4054 transitions. [2021-10-06 21:37:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:37:55,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:55,725 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:55,738 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 21:37:55,925 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 21:37:55,926 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:55,927 INFO L82 PathProgramCache]: Analyzing trace with hash -329060762, now seen corresponding path program 56 times [2021-10-06 21:37:55,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:55,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030240541] [2021-10-06 21:37:55,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:37:55,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:55,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:55,930 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 21:37:55,933 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 21:37:56,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:37:56,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:56,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:37:56,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:57,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:00,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:00,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030240541] [2021-10-06 21:38:00,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030240541] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:00,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:00,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:38:00,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823057790] [2021-10-06 21:38:00,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:38:00,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:38:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:38:00,497 INFO L87 Difference]: Start difference. First operand 1170 states and 4054 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:19,465 INFO L93 Difference]: Finished difference Result 1560 states and 5003 transitions. [2021-10-06 21:38:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:38:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:38:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:19,470 INFO L225 Difference]: With dead ends: 1560 [2021-10-06 21:38:19,470 INFO L226 Difference]: Without dead ends: 1544 [2021-10-06 21:38:19,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 17431.5ms TimeCoverageRelationStatistics Valid=490, Invalid=1862, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:38:19,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-10-06 21:38:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1242. [2021-10-06 21:38:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 3.4746172441579373) internal successors, (4312), 1241 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 21:38:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 4312 transitions. [2021-10-06 21:38:19,502 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 4312 transitions. Word has length 20 [2021-10-06 21:38:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:19,503 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 4312 transitions. [2021-10-06 21:38:19,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 4312 transitions. [2021-10-06 21:38:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:38:19,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:19,507 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:19,527 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 21:38:19,721 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 21:38:19,722 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:19,722 INFO L82 PathProgramCache]: Analyzing trace with hash -156154976, now seen corresponding path program 57 times [2021-10-06 21:38:19,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:19,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599705051] [2021-10-06 21:38:19,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:38:19,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:19,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:19,725 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 21:38:19,727 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 21:38:20,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-06 21:38:20,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:20,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:38:20,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:21,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:23,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:23,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599705051] [2021-10-06 21:38:23,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599705051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:23,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:23,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-06 21:38:23,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960845499] [2021-10-06 21:38:23,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:38:23,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:23,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:38:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:38:23,496 INFO L87 Difference]: Start difference. First operand 1242 states and 4312 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:41,642 INFO L93 Difference]: Finished difference Result 1636 states and 5202 transitions. [2021-10-06 21:38:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:38:41,643 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:38:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:41,653 INFO L225 Difference]: With dead ends: 1636 [2021-10-06 21:38:41,653 INFO L226 Difference]: Without dead ends: 1636 [2021-10-06 21:38:41,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 17298.7ms TimeCoverageRelationStatistics Valid=795, Invalid=2627, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:38:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-06 21:38:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1298. [2021-10-06 21:38:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.501927525057826) internal successors, (4542), 1297 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 21:38:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4542 transitions. [2021-10-06 21:38:41,680 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 4542 transitions. Word has length 20 [2021-10-06 21:38:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:41,680 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 4542 transitions. [2021-10-06 21:38:41,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 4542 transitions. [2021-10-06 21:38:41,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:38:41,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:41,684 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:41,697 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 21:38:41,885 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 21:38:41,885 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1412649246, now seen corresponding path program 58 times [2021-10-06 21:38:41,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:41,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309612927] [2021-10-06 21:38:41,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:38:41,887 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:41,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:41,889 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 21:38:41,889 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 21:38:42,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:38:42,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:42,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:38:42,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:43,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:46,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:46,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309612927] [2021-10-06 21:38:46,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309612927] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:46,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:46,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:38:46,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077514920] [2021-10-06 21:38:46,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:38:46,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:38:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:38:46,297 INFO L87 Difference]: Start difference. First operand 1298 states and 4542 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:07,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:07,259 INFO L93 Difference]: Finished difference Result 1688 states and 5468 transitions. [2021-10-06 21:39:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:39:07,260 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:39:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:07,264 INFO L225 Difference]: With dead ends: 1688 [2021-10-06 21:39:07,264 INFO L226 Difference]: Without dead ends: 1672 [2021-10-06 21:39:07,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 19256.5ms TimeCoverageRelationStatistics Valid=561, Invalid=1889, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:39:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-10-06 21:39:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1344. [2021-10-06 21:39:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.5152643335815337) internal successors, (4721), 1343 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states 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 21:39:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4721 transitions. [2021-10-06 21:39:07,300 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4721 transitions. Word has length 20 [2021-10-06 21:39:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:07,301 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 4721 transitions. [2021-10-06 21:39:07,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4721 transitions. [2021-10-06 21:39:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:39:07,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:07,306 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:07,325 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 21:39:07,520 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 21:39:07,521 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1340448006, now seen corresponding path program 59 times [2021-10-06 21:39:07,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:07,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669081119] [2021-10-06 21:39:07,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:39:07,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:07,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:07,525 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 21:39:07,526 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 21:39:08,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:39:08,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:08,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:39:08,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:08,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:11,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:11,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669081119] [2021-10-06 21:39:11,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669081119] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:11,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:11,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:39:11,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364230412] [2021-10-06 21:39:11,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:39:11,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:11,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:39:11,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:39:11,233 INFO L87 Difference]: Start difference. First operand 1344 states and 4721 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:17,999 INFO L93 Difference]: Finished difference Result 1444 states and 5085 transitions. [2021-10-06 21:39:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:39:18,000 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:39:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:18,003 INFO L225 Difference]: With dead ends: 1444 [2021-10-06 21:39:18,003 INFO L226 Difference]: Without dead ends: 1440 [2021-10-06 21:39:18,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 6834.1ms TimeCoverageRelationStatistics Valid=294, Invalid=698, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:39:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-10-06 21:39:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1398. [2021-10-06 21:39:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 3.5318539727988547) internal successors, (4934), 1397 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states 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 21:39:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4934 transitions. [2021-10-06 21:39:18,028 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4934 transitions. Word has length 20 [2021-10-06 21:39:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:18,028 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4934 transitions. [2021-10-06 21:39:18,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4934 transitions. [2021-10-06 21:39:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:39:18,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:18,032 INFO L512 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:18,046 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 21:39:18,232 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 21:39:18,233 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:18,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1965492708, now seen corresponding path program 60 times [2021-10-06 21:39:18,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:18,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129736186] [2021-10-06 21:39:18,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:39:18,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:18,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:18,236 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 21:39:18,237 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 21:39:19,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:39:19,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:19,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:39:19,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:19,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:20,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:20,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129736186] [2021-10-06 21:39:20,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129736186] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:20,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:20,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:39:20,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746138583] [2021-10-06 21:39:20,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:39:20,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:39:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:39:20,814 INFO L87 Difference]: Start difference. First operand 1398 states and 4934 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:31,817 INFO L93 Difference]: Finished difference Result 2556 states and 8302 transitions. [2021-10-06 21:39:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:39:31,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:39:31,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:31,825 INFO L225 Difference]: With dead ends: 2556 [2021-10-06 21:39:31,825 INFO L226 Difference]: Without dead ends: 2556 [2021-10-06 21:39:31,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 10606.6ms TimeCoverageRelationStatistics Valid=857, Invalid=2683, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:39:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-10-06 21:39:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1416. [2021-10-06 21:39:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.5187279151943462) internal successors, (4979), 1415 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states 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 21:39:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4979 transitions. [2021-10-06 21:39:31,876 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4979 transitions. Word has length 20 [2021-10-06 21:39:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:31,877 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 4979 transitions. [2021-10-06 21:39:31,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4979 transitions. [2021-10-06 21:39:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:39:31,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:31,881 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:31,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-06 21:39:32,094 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 21:39:32,095 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1713744326, now seen corresponding path program 61 times [2021-10-06 21:39:32,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:32,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793584439] [2021-10-06 21:39:32,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:39:32,097 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:32,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:32,098 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 21:39:32,099 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 21:39:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:39:33,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:39:33,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:33,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:35,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:35,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793584439] [2021-10-06 21:39:35,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793584439] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:35,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:35,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:39:35,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831706] [2021-10-06 21:39:35,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:39:35,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:39:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:39:35,663 INFO L87 Difference]: Start difference. First operand 1416 states and 4979 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:46,079 INFO L93 Difference]: Finished difference Result 1934 states and 6416 transitions. [2021-10-06 21:39:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:39:46,080 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:39:46,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:46,090 INFO L225 Difference]: With dead ends: 1934 [2021-10-06 21:39:46,091 INFO L226 Difference]: Without dead ends: 1934 [2021-10-06 21:39:46,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 10469.3ms TimeCoverageRelationStatistics Valid=733, Invalid=2459, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:39:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2021-10-06 21:39:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1424. [2021-10-06 21:39:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.510189739985945) internal successors, (4995), 1423 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states 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 21:39:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4995 transitions. [2021-10-06 21:39:46,119 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4995 transitions. Word has length 20 [2021-10-06 21:39:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:46,120 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4995 transitions. [2021-10-06 21:39:46,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4995 transitions. [2021-10-06 21:39:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:39:46,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:46,123 INFO L512 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:46,137 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 21:39:46,324 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 21:39:46,324 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1632819706, now seen corresponding path program 62 times [2021-10-06 21:39:46,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:46,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474848046] [2021-10-06 21:39:46,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:39:46,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:46,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:46,328 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 21:39:46,329 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 21:39:47,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:39:47,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:47,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:39:47,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:47,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:48,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:48,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474848046] [2021-10-06 21:39:48,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474848046] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:48,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:48,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:39:48,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718191764] [2021-10-06 21:39:48,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:39:48,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:39:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:39:48,829 INFO L87 Difference]: Start difference. First operand 1424 states and 4995 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:40:02,041 INFO L93 Difference]: Finished difference Result 2082 states and 6549 transitions. [2021-10-06 21:40:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 21:40:02,041 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:40:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:40:02,045 INFO L225 Difference]: With dead ends: 2082 [2021-10-06 21:40:02,045 INFO L226 Difference]: Without dead ends: 2082 [2021-10-06 21:40:02,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 12407.7ms TimeCoverageRelationStatistics Valid=1155, Invalid=3957, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:40:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-10-06 21:40:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1434. [2021-10-06 21:40:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 3.5101186322400557) internal successors, (5030), 1433 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states 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 21:40:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 5030 transitions. [2021-10-06 21:40:02,076 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 5030 transitions. Word has length 20 [2021-10-06 21:40:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:40:02,076 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 5030 transitions. [2021-10-06 21:40:02,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 5030 transitions. [2021-10-06 21:40:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:40:02,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:40:02,079 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:40:02,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:40:02,280 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 21:40:02,280 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:40:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:40:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash -69199170, now seen corresponding path program 63 times [2021-10-06 21:40:02,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:40:02,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793427729] [2021-10-06 21:40:02,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:40:02,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:40:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:40:02,283 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 21:40:02,284 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 21:40:03,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:40:03,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:40:03,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:40:03,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:40:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:03,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:40:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:05,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:40:05,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793427729] [2021-10-06 21:40:05,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793427729] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:40:05,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:40:05,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:40:05,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826477875] [2021-10-06 21:40:05,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:40:05,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:40:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:40:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:40:05,546 INFO L87 Difference]: Start difference. First operand 1434 states and 5030 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:40:24,446 INFO L93 Difference]: Finished difference Result 1910 states and 6065 transitions. [2021-10-06 21:40:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:40:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:40:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:40:24,451 INFO L225 Difference]: With dead ends: 1910 [2021-10-06 21:40:24,451 INFO L226 Difference]: Without dead ends: 1910 [2021-10-06 21:40:24,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 18211.5ms TimeCoverageRelationStatistics Valid=784, Invalid=3376, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:40:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-10-06 21:40:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1448. [2021-10-06 21:40:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.5051831375259157) internal successors, (5072), 1447 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states 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 21:40:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5072 transitions. [2021-10-06 21:40:24,480 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5072 transitions. Word has length 20 [2021-10-06 21:40:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:40:24,480 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5072 transitions. [2021-10-06 21:40:24,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5072 transitions. [2021-10-06 21:40:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:40:24,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:40:24,484 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:40:24,498 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 21:40:24,684 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 21:40:24,685 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:40:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:40:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2019026114, now seen corresponding path program 64 times [2021-10-06 21:40:24,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:40:24,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807899151] [2021-10-06 21:40:24,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:40:24,687 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:40:24,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:40:24,688 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 21:40:24,689 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 21:40:25,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:40:25,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:40:25,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:40:25,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:40:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:26,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:40:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:28,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:40:28,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807899151] [2021-10-06 21:40:28,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807899151] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:40:28,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:40:28,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:40:28,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922979007] [2021-10-06 21:40:28,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:40:28,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:40:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:40:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:40:28,365 INFO L87 Difference]: Start difference. First operand 1448 states and 5072 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:40:45,672 INFO L93 Difference]: Finished difference Result 1984 states and 6419 transitions. [2021-10-06 21:40:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:40:45,673 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:40:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:40:45,677 INFO L225 Difference]: With dead ends: 1984 [2021-10-06 21:40:45,678 INFO L226 Difference]: Without dead ends: 1968 [2021-10-06 21:40:45,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 16868.2ms TimeCoverageRelationStatistics Valid=890, Invalid=3666, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:40:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-10-06 21:40:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1466. [2021-10-06 21:40:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.499658703071672) internal successors, (5127), 1465 states have internal predecessors, (5127), 0 states have call successors, (0), 0 states 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 21:40:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5127 transitions. [2021-10-06 21:40:45,704 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5127 transitions. Word has length 20 [2021-10-06 21:40:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:40:45,704 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 5127 transitions. [2021-10-06 21:40:45,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5127 transitions. [2021-10-06 21:40:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:40:45,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:40:45,708 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:40:45,721 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 21:40:45,908 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 21:40:45,908 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:40:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:40:45,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1908421958, now seen corresponding path program 65 times [2021-10-06 21:40:45,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:40:45,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464275602] [2021-10-06 21:40:45,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:40:45,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:40:45,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:40:45,912 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 21:40:45,912 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 21:40:47,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:40:47,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:40:47,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:40:47,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:40:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:47,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:40:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:48,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:40:48,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464275602] [2021-10-06 21:40:48,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464275602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:40:48,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:40:48,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:40:48,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283849665] [2021-10-06 21:40:48,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:40:48,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:40:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:40:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:40:48,382 INFO L87 Difference]: Start difference. First operand 1466 states and 5127 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:41:01,422 INFO L93 Difference]: Finished difference Result 2246 states and 7014 transitions. [2021-10-06 21:41:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-06 21:41:01,423 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:41:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:41:01,427 INFO L225 Difference]: With dead ends: 2246 [2021-10-06 21:41:01,427 INFO L226 Difference]: Without dead ends: 2234 [2021-10-06 21:41:01,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 12548.7ms TimeCoverageRelationStatistics Valid=1493, Invalid=4207, Unknown=0, NotChecked=0, Total=5700 [2021-10-06 21:41:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-10-06 21:41:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1478. [2021-10-06 21:41:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.4983073798239674) internal successors, (5167), 1477 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states 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 21:41:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5167 transitions. [2021-10-06 21:41:01,456 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5167 transitions. Word has length 20 [2021-10-06 21:41:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:41:01,457 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 5167 transitions. [2021-10-06 21:41:01,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5167 transitions. [2021-10-06 21:41:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:41:01,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:41:01,460 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:41:01,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-10-06 21:41:01,662 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 21:41:01,662 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:41:01,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:41:01,663 INFO L82 PathProgramCache]: Analyzing trace with hash 734071138, now seen corresponding path program 66 times [2021-10-06 21:41:01,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:41:01,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876664319] [2021-10-06 21:41:01,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:41:01,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:41:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:41:01,666 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 21:41:01,667 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 21:41:02,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-06 21:41:02,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:41:02,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:41:02,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:41:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:03,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:41:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:04,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:41:04,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876664319] [2021-10-06 21:41:04,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876664319] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:41:04,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:41:04,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-06 21:41:04,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679172214] [2021-10-06 21:41:04,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:41:04,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:41:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:41:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:41:04,884 INFO L87 Difference]: Start difference. First operand 1478 states and 5167 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:41:10,417 INFO L93 Difference]: Finished difference Result 1678 states and 5727 transitions. [2021-10-06 21:41:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:41:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:41:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:41:10,422 INFO L225 Difference]: With dead ends: 1678 [2021-10-06 21:41:10,422 INFO L226 Difference]: Without dead ends: 1676 [2021-10-06 21:41:10,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 5575.7ms TimeCoverageRelationStatistics Valid=558, Invalid=1422, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:41:10,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-10-06 21:41:10,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1480. [2021-10-06 21:41:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 3.499661933739013) internal successors, (5176), 1479 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states 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 21:41:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5176 transitions. [2021-10-06 21:41:10,450 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5176 transitions. Word has length 20 [2021-10-06 21:41:10,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:41:10,450 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 5176 transitions. [2021-10-06 21:41:10,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:10,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5176 transitions. [2021-10-06 21:41:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:41:10,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:41:10,453 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:41:10,467 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 21:41:10,654 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 21:41:10,654 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:41:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:41:10,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1569434674, now seen corresponding path program 67 times [2021-10-06 21:41:10,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:41:10,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131196825] [2021-10-06 21:41:10,656 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:41:10,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:41:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:41:10,658 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 21:41:10,658 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 21:41:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:41:11,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:41:11,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:41:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:12,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:41:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:14,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:41:14,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131196825] [2021-10-06 21:41:14,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131196825] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:41:14,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:41:14,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:41:14,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976588188] [2021-10-06 21:41:14,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:41:14,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:41:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:41:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:41:14,081 INFO L87 Difference]: Start difference. First operand 1480 states and 5176 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:41:40,781 INFO L93 Difference]: Finished difference Result 2022 states and 6389 transitions. [2021-10-06 21:41:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 21:41:40,782 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:41:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:41:40,786 INFO L225 Difference]: With dead ends: 2022 [2021-10-06 21:41:40,786 INFO L226 Difference]: Without dead ends: 2022 [2021-10-06 21:41:40,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 25543.4ms TimeCoverageRelationStatistics Valid=933, Invalid=3759, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 21:41:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2021-10-06 21:41:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1482. [2021-10-06 21:41:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.49966239027684) internal successors, (5183), 1481 states have internal predecessors, (5183), 0 states have call successors, (0), 0 states 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 21:41:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5183 transitions. [2021-10-06 21:41:40,815 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5183 transitions. Word has length 20 [2021-10-06 21:41:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:41:40,815 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5183 transitions. [2021-10-06 21:41:40,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5183 transitions. [2021-10-06 21:41:40,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:41:40,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:41:40,827 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:41:40,842 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 21:41:41,031 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 21:41:41,031 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:41:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:41:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash 423544560, now seen corresponding path program 68 times [2021-10-06 21:41:41,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:41:41,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115826506] [2021-10-06 21:41:41,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:41:41,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:41:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:41:41,035 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 21:41:41,036 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 21:41:42,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:41:42,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:41:42,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:41:42,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:41:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:42,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:41:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:44,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:41:44,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115826506] [2021-10-06 21:41:44,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115826506] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:41:44,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:41:44,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:41:44,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524828482] [2021-10-06 21:41:44,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:41:44,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:41:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:41:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:41:44,561 INFO L87 Difference]: Start difference. First operand 1482 states and 5183 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:42:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:42:06,581 INFO L93 Difference]: Finished difference Result 2100 states and 6593 transitions. [2021-10-06 21:42:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:42:06,582 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:42:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:42:06,585 INFO L225 Difference]: With dead ends: 2100 [2021-10-06 21:42:06,585 INFO L226 Difference]: Without dead ends: 2052 [2021-10-06 21:42:06,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 21071.4ms TimeCoverageRelationStatistics Valid=767, Invalid=3139, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:42:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2021-10-06 21:42:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1496. [2021-10-06 21:42:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.4956521739130433) internal successors, (5226), 1495 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states 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 21:42:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5226 transitions. [2021-10-06 21:42:06,622 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5226 transitions. Word has length 20 [2021-10-06 21:42:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:42:06,623 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 5226 transitions. [2021-10-06 21:42:06,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:42:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5226 transitions. [2021-10-06 21:42:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:42:06,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:42:06,627 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:42:06,642 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 21:42:06,827 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 21:42:06,828 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:42:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:42:06,829 INFO L82 PathProgramCache]: Analyzing trace with hash -442693900, now seen corresponding path program 69 times [2021-10-06 21:42:06,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:42:06,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510783773] [2021-10-06 21:42:06,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:42:06,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:42:06,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:42:06,831 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 21:42:06,832 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 21:42:08,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:42:08,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:42:08,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:42:08,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:42:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:42:08,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:42:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:42:10,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:42:10,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510783773] [2021-10-06 21:42:10,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510783773] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:42:10,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:42:10,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:42:10,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990042642] [2021-10-06 21:42:10,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:42:10,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:42:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:42:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:42:10,596 INFO L87 Difference]: Start difference. First operand 1496 states and 5226 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:42:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:42:28,431 INFO L93 Difference]: Finished difference Result 1960 states and 6311 transitions. [2021-10-06 21:42:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 21:42:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:42:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:42:28,436 INFO L225 Difference]: With dead ends: 1960 [2021-10-06 21:42:28,436 INFO L226 Difference]: Without dead ends: 1944 [2021-10-06 21:42:28,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 17121.1ms TimeCoverageRelationStatistics Valid=915, Invalid=4197, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:42:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-10-06 21:42:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1516. [2021-10-06 21:42:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.493069306930693) internal successors, (5292), 1515 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states 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 21:42:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5292 transitions. [2021-10-06 21:42:28,472 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5292 transitions. Word has length 20 [2021-10-06 21:42:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:42:28,472 INFO L470 AbstractCegarLoop]: Abstraction has 1516 states and 5292 transitions. [2021-10-06 21:42:28,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:42:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5292 transitions. [2021-10-06 21:42:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:42:28,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:42:28,476 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:42:28,493 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 21:42:28,676 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 21:42:28,677 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:42:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:42:28,678 INFO L82 PathProgramCache]: Analyzing trace with hash -332089744, now seen corresponding path program 70 times [2021-10-06 21:42:28,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:42:28,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634518767] [2021-10-06 21:42:28,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:42:28,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:42:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:42:28,681 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 21:42:28,682 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 21:42:29,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:42:29,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:42:29,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:42:29,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:42:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:42:30,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:42:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:42:32,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:42:32,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634518767] [2021-10-06 21:42:32,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634518767] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:42:32,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:42:32,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:42:32,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661712415] [2021-10-06 21:42:32,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:42:32,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:42:32,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:42:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:42:32,564 INFO L87 Difference]: Start difference. First operand 1516 states and 5292 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-06 21:42:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:42:35,150 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:42:35,159 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 21:42:35,159 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:42:35,165 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 21:42:35,351 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 21:42:35,351 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. [2021-10-06 21:42:35,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:42:35,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:42:35,354 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:42:35,355 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:42:35,360 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:42:35,360 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:42:35,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:42:35 BasicIcfg [2021-10-06 21:42:35,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:42:35,363 INFO L168 Benchmark]: Toolchain (without parser) took 823484.09 ms. Allocated memory was 168.8 MB in the beginning and 226.5 MB in the end (delta: 57.7 MB). Free memory was 142.6 MB in the beginning and 95.1 MB in the end (delta: 47.5 MB). Peak memory consumption was 105.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:42:35,363 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 141.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:42:35,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.23 ms. Allocated memory is still 168.8 MB. Free memory was 142.3 MB in the beginning and 131.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:42:35,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.34 ms. Allocated memory is still 168.8 MB. Free memory was 131.9 MB in the beginning and 130.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:42:35,364 INFO L168 Benchmark]: Boogie Preprocessor took 32.30 ms. Allocated memory is still 168.8 MB. Free memory was 130.3 MB in the beginning and 128.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:42:35,364 INFO L168 Benchmark]: RCFGBuilder took 682.61 ms. Allocated memory is still 168.8 MB. Free memory was 128.7 MB in the beginning and 114.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:42:35,365 INFO L168 Benchmark]: TraceAbstraction took 822343.42 ms. Allocated memory was 168.8 MB in the beginning and 226.5 MB in the end (delta: 57.7 MB). Free memory was 113.5 MB in the beginning and 95.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:42:35,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 141.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 365.23 ms. Allocated memory is still 168.8 MB. Free memory was 142.3 MB in the beginning and 131.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.34 ms. Allocated memory is still 168.8 MB. Free memory was 131.9 MB in the beginning and 130.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.30 ms. Allocated memory is still 168.8 MB. Free memory was 130.3 MB in the beginning and 128.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 682.61 ms. Allocated memory is still 168.8 MB. Free memory was 128.7 MB in the beginning and 114.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 822343.42 ms. Allocated memory was 168.8 MB in the beginning and 226.5 MB in the end (delta: 57.7 MB). Free memory was 113.5 MB in the beginning and 95.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7909.5ms, 81 PlacesBefore, 32 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 462 CoEnabledTransitionPairs, 5 FixpointIterations, 50 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 498 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 476, positive: 474, positive conditional: 0, positive unconditional: 474, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 255, positive: 253, positive conditional: 0, positive unconditional: 253, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 255, positive: 253, positive conditional: 0, positive unconditional: 253, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 476, positive: 221, positive conditional: 0, positive unconditional: 221, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 255, unknown conditional: 0, unknown unconditional: 255] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 68]: 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 (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - TimeoutResultAtElement [Line: 67]: 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 (1516states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 822185.0ms, OverallIterations: 77, TraceHistogramMax: 5, EmptinessCheckTime: 161.0ms, AutomataDifference: 634638.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7974.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3000 SDtfs, 11947 SDslu, 21422 SDs, 0 SdLazy, 28939 SolverSat, 4958 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88342.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6041 GetRequests, 3107 SyntacticMatches, 1 SemanticMatches, 2932 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32988 ImplicationChecksByTransitivity, 599820.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1516occurred in iteration=76, InterpolantAutomatonStates: 2742, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1393.7ms AutomataMinimizationTime, 76 MinimizatonAttempts, 18396 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 504.5ms SsaConstructionTime, 6919.6ms SatisfiabilityAnalysisTime, 118082.4ms InterpolantComputationTime, 1333 NumberOfCodeBlocks, 1332 NumberOfCodeBlocksAsserted, 173 NumberOfCheckSat, 2512 ConstructedInterpolants, 4 QuantifiedInterpolants, 29013 SizeOfPredicates, 505 NumberOfNonLiveVariables, 5544 ConjunctsInSsa, 1218 ConjunctsInUnsatCore, 154 InterpolantComputations, 15 PerfectInterpolantSequences, 188/1574 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