/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/chl-simpl-str-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:36:25,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:36:25,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:36:25,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:36:25,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:36:25,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:36:25,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:36:25,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:36:25,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:36:25,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:36:25,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:36:25,517 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:36:25,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:36:25,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:36:25,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:36:25,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:36:25,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:36:25,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:36:25,519 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:36:25,519 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:36:25,519 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:36:25,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:36:25,520 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:36:25,520 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:36:25,520 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:36:25,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:36:25,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:36:25,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:36:25,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:36:25,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:36:25,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:36:25,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:36:25,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:36:25,522 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:36:25,522 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:36:25,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:36:25,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:36:25,523 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:36:25,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:36:25,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:36:25,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:36:25,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:36:25,934 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:36:25,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2021-10-07 15:36:26,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c975cf4e7/13915b951e5e4067b2f5a1db02b62cfb/FLAG6799a1e33 [2021-10-07 15:36:26,643 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:36:26,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2021-10-07 15:36:26,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c975cf4e7/13915b951e5e4067b2f5a1db02b62cfb/FLAG6799a1e33 [2021-10-07 15:36:27,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c975cf4e7/13915b951e5e4067b2f5a1db02b62cfb [2021-10-07 15:36:27,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:36:27,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:36:27,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:36:27,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:36:27,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:36:27,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f186c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27, skipping insertion in model container [2021-10-07 15:36:27,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:36:27,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:36:27,371 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/chl-simpl-str-subst.wvr.c[2527,2540] [2021-10-07 15:36:27,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:36:27,391 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:36:27,417 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/chl-simpl-str-subst.wvr.c[2527,2540] [2021-10-07 15:36:27,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:36:27,437 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:36:27,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27 WrapperNode [2021-10-07 15:36:27,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:36:27,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:36:27,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:36:27,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:36:27,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:36:27,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:36:27,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:36:27,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:36:27,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:36:27,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:36:27,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:36:27,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:36:27,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (1/1) ... [2021-10-07 15:36:27,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:36:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:36:27,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:36:27,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:36:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:36:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:36:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:36:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:36:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:36:27,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:36:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:36:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:36:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:36:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:36:27,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:36:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:36:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:36:27,650 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:36:28,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:36:28,167 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-07 15:36:28,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:36:28 BoogieIcfgContainer [2021-10-07 15:36:28,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:36:28,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:36:28,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:36:28,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:36:28,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:36:27" (1/3) ... [2021-10-07 15:36:28,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e95cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:36:28, skipping insertion in model container [2021-10-07 15:36:28,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:36:27" (2/3) ... [2021-10-07 15:36:28,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e95cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:36:28, skipping insertion in model container [2021-10-07 15:36:28,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:36:28" (3/3) ... [2021-10-07 15:36:28,188 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2021-10-07 15:36:28,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:36:28,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-07 15:36:28,197 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:36:28,277 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,277 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,278 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,278 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,278 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,282 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,282 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,282 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,283 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,283 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,306 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,306 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,306 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,311 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,312 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,312 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,312 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,312 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,313 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,313 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,314 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,314 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,314 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,314 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,315 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,316 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,316 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,317 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,317 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,317 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,317 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,317 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,319 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,319 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,319 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,320 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,320 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,321 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,321 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,339 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,340 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:36:28,375 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:36:28,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:36:28,469 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:36:28,470 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-07 15:36:28,489 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:36:28,502 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 156 transitions, 336 flow [2021-10-07 15:36:28,505 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 156 transitions, 336 flow [2021-10-07 15:36:28,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 156 transitions, 336 flow [2021-10-07 15:36:28,589 INFO L129 PetriNetUnfolder]: 11/153 cut-off events. [2021-10-07 15:36:28,590 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:36:28,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 11/153 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 219 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-10-07 15:36:28,615 INFO L116 LiptonReduction]: Number of co-enabled transitions 3888 [2021-10-07 15:36:42,277 INFO L131 LiptonReduction]: Checked pairs total: 3949 [2021-10-07 15:36:42,277 INFO L133 LiptonReduction]: Total number of compositions: 177 [2021-10-07 15:36:42,294 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 33 transitions, 90 flow [2021-10-07 15:36:42,316 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:36:42,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:42,328 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:36:42,329 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:42,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:42,334 INFO L82 PathProgramCache]: Analyzing trace with hash 620, now seen corresponding path program 1 times [2021-10-07 15:36:42,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:42,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180552187] [2021-10-07 15:36:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:42,350 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:42,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:42,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:42,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:36:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:42,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:36:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:42,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:42,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:42,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180552187] [2021-10-07 15:36:42,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180552187] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:42,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:42,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:36:42,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671632965] [2021-10-07 15:36:42,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:36:42,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:42,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:36:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:36:42,490 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:42,513 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2021-10-07 15:36:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:36:42,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 15:36:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:42,532 INFO L225 Difference]: With dead ends: 84 [2021-10-07 15:36:42,532 INFO L226 Difference]: Without dead ends: 84 [2021-10-07 15:36:42,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:36:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-07 15:36:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-07 15:36:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 83 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2021-10-07 15:36:42,589 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 1 [2021-10-07 15:36:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:42,590 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2021-10-07 15:36:42,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2021-10-07 15:36:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:36:42,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:42,591 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:36:42,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:42,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:42,803 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash 610915, now seen corresponding path program 1 times [2021-10-07 15:36:42,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:42,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128707850] [2021-10-07 15:36:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:42,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:42,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:42,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:42,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:36:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:42,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:36:42,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:43,025 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:36:43,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2021-10-07 15:36:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:43,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:43,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:43,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128707850] [2021-10-07 15:36:43,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128707850] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:43,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:43,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:36:43,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671728963] [2021-10-07 15:36:43,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:36:43,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:43,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:36:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:36:43,321 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:43,374 INFO L93 Difference]: Finished difference Result 78 states and 153 transitions. [2021-10-07 15:36:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:36:43,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:36:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:43,377 INFO L225 Difference]: With dead ends: 78 [2021-10-07 15:36:43,377 INFO L226 Difference]: Without dead ends: 78 [2021-10-07 15:36:43,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:36:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-07 15:36:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-07 15:36:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.217391304347826) internal successors, (153), 77 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 153 transitions. [2021-10-07 15:36:43,389 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 153 transitions. Word has length 3 [2021-10-07 15:36:43,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:43,389 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 153 transitions. [2021-10-07 15:36:43,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 153 transitions. [2021-10-07 15:36:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:36:43,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:43,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:36:43,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:43,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:43,607 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:43,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:43,608 INFO L82 PathProgramCache]: Analyzing trace with hash 610917, now seen corresponding path program 1 times [2021-10-07 15:36:43,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:43,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320885850] [2021-10-07 15:36:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:43,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:43,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:43,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:43,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:36:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:43,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:36:43,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:43,907 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:36:43,907 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 4 case distinctions, treesize of input 34 treesize of output 64 [2021-10-07 15:36:43,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 64 [2021-10-07 15:36:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:44,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:44,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:44,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320885850] [2021-10-07 15:36:44,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320885850] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:44,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:44,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:36:44,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319711059] [2021-10-07 15:36:44,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:36:44,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:36:44,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:36:44,226 INFO L87 Difference]: Start difference. First operand 78 states and 153 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:44,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:44,270 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2021-10-07 15:36:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:36:44,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:36:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:44,273 INFO L225 Difference]: With dead ends: 72 [2021-10-07 15:36:44,273 INFO L226 Difference]: Without dead ends: 72 [2021-10-07 15:36:44,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:36:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-07 15:36:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-07 15:36:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 71 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2021-10-07 15:36:44,305 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 3 [2021-10-07 15:36:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:44,305 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2021-10-07 15:36:44,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2021-10-07 15:36:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:36:44,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:44,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:36:44,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:44,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:44,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash 587103561, now seen corresponding path program 1 times [2021-10-07 15:36:44,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:44,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262280652] [2021-10-07 15:36:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:44,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:44,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:44,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:36:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:44,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:36:44,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:44,611 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:36:44,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:36:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:44,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:44,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:44,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262280652] [2021-10-07 15:36:44,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262280652] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:44,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:44,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:36:44,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049688583] [2021-10-07 15:36:44,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:36:44,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:44,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:36:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:36:44,679 INFO L87 Difference]: Start difference. First operand 72 states and 142 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:44,724 INFO L93 Difference]: Finished difference Result 66 states and 131 transitions. [2021-10-07 15:36:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:36:44,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:36:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:44,731 INFO L225 Difference]: With dead ends: 66 [2021-10-07 15:36:44,732 INFO L226 Difference]: Without dead ends: 66 [2021-10-07 15:36:44,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:36:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-07 15:36:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-07 15:36:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 2.1475409836065573) internal successors, (131), 65 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2021-10-07 15:36:44,750 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 5 [2021-10-07 15:36:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:44,752 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2021-10-07 15:36:44,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2021-10-07 15:36:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:36:44,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:44,755 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:36:44,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:44,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:44,961 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash 587103560, now seen corresponding path program 1 times [2021-10-07 15:36:44,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:44,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403766086] [2021-10-07 15:36:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:44,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:44,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:44,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:36:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:45,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:36:45,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:45,179 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:36:45,180 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:36:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:45,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:45,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:45,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403766086] [2021-10-07 15:36:45,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403766086] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:45,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:45,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:36:45,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769521466] [2021-10-07 15:36:45,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:36:45,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:45,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:36:45,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:36:45,385 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:45,417 INFO L93 Difference]: Finished difference Result 60 states and 120 transitions. [2021-10-07 15:36:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:36:45,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:36:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:45,419 INFO L225 Difference]: With dead ends: 60 [2021-10-07 15:36:45,419 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 15:36:45,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:36:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 15:36:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-07 15:36:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 59 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2021-10-07 15:36:45,426 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 5 [2021-10-07 15:36:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:45,426 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2021-10-07 15:36:45,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2021-10-07 15:36:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:36:45,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:45,427 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:45,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:45,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:45,641 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:45,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:45,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1565820510, now seen corresponding path program 1 times [2021-10-07 15:36:45,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:45,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998102544] [2021-10-07 15:36:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:45,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:45,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:45,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:36:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:45,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:36:45,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:45,749 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:36:45,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:36:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:45,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:45,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:45,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998102544] [2021-10-07 15:36:45,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998102544] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:45,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:45,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:36:45,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319210960] [2021-10-07 15:36:45,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:36:45,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:45,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:36:45,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:36:45,867 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:45,905 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2021-10-07 15:36:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:36:45,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 7 [2021-10-07 15:36:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:45,907 INFO L225 Difference]: With dead ends: 52 [2021-10-07 15:36:45,907 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 15:36:45,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:36:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 15:36:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 15:36:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2021-10-07 15:36:45,912 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 7 [2021-10-07 15:36:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:45,912 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2021-10-07 15:36:45,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:45,913 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2021-10-07 15:36:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:36:45,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:45,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:45,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:46,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:46,115 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:46,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1565820512, now seen corresponding path program 1 times [2021-10-07 15:36:46,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:46,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584729290] [2021-10-07 15:36:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:46,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:46,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:46,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:36:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:46,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:36:46,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:46,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:46,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:46,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584729290] [2021-10-07 15:36:46,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584729290] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:46,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:46,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:36:46,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836522059] [2021-10-07 15:36:46,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:36:46,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:46,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:36:46,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:36:46,383 INFO L87 Difference]: Start difference. First operand 52 states and 100 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:46,405 INFO L93 Difference]: Finished difference Result 44 states and 80 transitions. [2021-10-07 15:36:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:36:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:36:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:46,407 INFO L225 Difference]: With dead ends: 44 [2021-10-07 15:36:46,407 INFO L226 Difference]: Without dead ends: 44 [2021-10-07 15:36:46,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:36:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-07 15:36:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-07 15:36:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 80 transitions. [2021-10-07 15:36:46,412 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 80 transitions. Word has length 7 [2021-10-07 15:36:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:46,412 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 80 transitions. [2021-10-07 15:36:46,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 80 transitions. [2021-10-07 15:36:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:36:46,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:46,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:46,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:46,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:46,615 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1497341245, now seen corresponding path program 1 times [2021-10-07 15:36:46,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:46,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224255374] [2021-10-07 15:36:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:46,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:46,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:46,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:46,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:36:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:46,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:36:46,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:48,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:51,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:51,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224255374] [2021-10-07 15:36:51,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224255374] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:51,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:51,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:36:51,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521964461] [2021-10-07 15:36:51,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:36:51,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:51,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:36:51,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:36:51,258 INFO L87 Difference]: Start difference. First operand 44 states and 80 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-10-07 15:36:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:51,806 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-10-07 15:36:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:36:51,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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 [2021-10-07 15:36:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:51,808 INFO L225 Difference]: With dead ends: 67 [2021-10-07 15:36:51,808 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 15:36:51,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1296.9ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:36:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 15:36:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-07 15:36:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2021-10-07 15:36:51,814 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2021-10-07 15:36:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:51,815 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2021-10-07 15:36:51,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-10-07 15:36:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2021-10-07 15:36:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:36:51,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:51,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:51,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:52,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:52,025 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:52,026 INFO L82 PathProgramCache]: Analyzing trace with hash -820640993, now seen corresponding path program 2 times [2021-10-07 15:36:52,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:52,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145720601] [2021-10-07 15:36:52,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:36:52,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:52,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:52,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:52,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:36:52,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:36:52,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:36:52,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:36:52,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:53,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:56,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:56,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145720601] [2021-10-07 15:36:56,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145720601] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:36:56,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:36:56,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:36:56,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364325213] [2021-10-07 15:36:56,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:36:56,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:56,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:36:56,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:36:56,462 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-10-07 15:36:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:57,429 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2021-10-07 15:36:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:36:57,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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 [2021-10-07 15:36:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:57,430 INFO L225 Difference]: With dead ends: 63 [2021-10-07 15:36:57,430 INFO L226 Difference]: Without dead ends: 44 [2021-10-07 15:36:57,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1886.6ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:36:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-07 15:36:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-10-07 15:36:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-07 15:36:57,435 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-07 15:36:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:57,435 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-07 15:36:57,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-10-07 15:36:57,435 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-07 15:36:57,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:36:57,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:57,436 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:57,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:57,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:57,641 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:36:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:57,642 INFO L82 PathProgramCache]: Analyzing trace with hash -145419291, now seen corresponding path program 3 times [2021-10-07 15:36:57,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:57,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43579772] [2021-10-07 15:36:57,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:36:57,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:57,645 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:57,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:36:57,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:36:57,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:36:57,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:36:57,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:36:58,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:01,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:01,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43579772] [2021-10-07 15:37:01,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43579772] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:01,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:01,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:37:01,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194697901] [2021-10-07 15:37:01,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:37:01,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:01,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:37:01,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:37:01,018 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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) [2021-10-07 15:37:01,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:01,902 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-10-07 15:37:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:37:01,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 [2021-10-07 15:37:01,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:01,903 INFO L225 Difference]: With dead ends: 51 [2021-10-07 15:37:01,903 INFO L226 Difference]: Without dead ends: 36 [2021-10-07 15:37:01,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1471.8ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:37:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-07 15:37:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-07 15:37:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-10-07 15:37:01,906 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2021-10-07 15:37:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:01,906 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-07 15:37:01,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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) [2021-10-07 15:37:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-10-07 15:37:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:37:01,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:01,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:37:01,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:02,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:37:02,110 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:02,111 INFO L82 PathProgramCache]: Analyzing trace with hash 663052097, now seen corresponding path program 4 times [2021-10-07 15:37:02,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:02,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985016802] [2021-10-07 15:37:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:37:02,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:02,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:37:02,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:37:02,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:37:02,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:37:02,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:37:02,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:03,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:05,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:05,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985016802] [2021-10-07 15:37:05,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985016802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:05,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:05,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:37:05,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815429016] [2021-10-07 15:37:05,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:37:05,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:37:05,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:37:05,432 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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) [2021-10-07 15:37:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:06,553 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-10-07 15:37:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:37:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 [2021-10-07 15:37:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:06,554 INFO L225 Difference]: With dead ends: 37 [2021-10-07 15:37:06,554 INFO L226 Difference]: Without dead ends: 24 [2021-10-07 15:37:06,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1571.7ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:37:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-07 15:37:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-07 15:37:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-10-07 15:37:06,557 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2021-10-07 15:37:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:06,557 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-10-07 15:37:06,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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) [2021-10-07 15:37:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-10-07 15:37:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:37:06,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:06,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:37:06,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:06,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:37:06,766 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:06,767 INFO L82 PathProgramCache]: Analyzing trace with hash 165923429, now seen corresponding path program 5 times [2021-10-07 15:37:06,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:06,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257730592] [2021-10-07 15:37:06,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:37:06,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:06,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:06,770 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:37:06,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:37:07,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:37:07,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:37:07,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:37:07,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:08,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:09,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:09,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257730592] [2021-10-07 15:37:09,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257730592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:09,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:09,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:37:09,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613425484] [2021-10-07 15:37:09,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:37:09,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:37:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:37:09,479 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:10,445 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-07 15:37:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:37:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:37:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:10,448 INFO L225 Difference]: With dead ends: 31 [2021-10-07 15:37:10,448 INFO L226 Difference]: Without dead ends: 22 [2021-10-07 15:37:10,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1516.1ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:37:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-07 15:37:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-07 15:37:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-07 15:37:10,451 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-10-07 15:37:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:10,451 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-07 15:37:10,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-07 15:37:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:37:10,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:37:10,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:37:10,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:10,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:37:10,666 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:37:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:37:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2119895795, now seen corresponding path program 6 times [2021-10-07 15:37:10,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:37:10,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600630104] [2021-10-07 15:37:10,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:37:10,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:37:10,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:37:10,669 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:37:10,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:37:11,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 15:37:11,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:37:11,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:37:11,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:37:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:12,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:37:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:37:13,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:13,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600630104] [2021-10-07 15:37:13,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600630104] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:37:13,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:37:13,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:37:13,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614985534] [2021-10-07 15:37:13,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:37:13,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:37:13,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:37:13,675 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:14,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:37:14,484 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-07 15:37:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:37:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:37:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:37:14,484 INFO L225 Difference]: With dead ends: 21 [2021-10-07 15:37:14,484 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 15:37:14,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1528.6ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:37:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 15:37:14,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 15:37:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 15:37:14,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-07 15:37:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:37:14,485 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 15:37:14,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 15:37:14,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 15:37:14,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:37:14,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:37:14,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:37:14,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:37:14,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:37:14,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:37:14,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:37:14,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:37:14,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:37:14,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:37:14,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:37:14,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:37:14,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:37:14,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:37:14,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:37:14,492 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:37:14,492 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:37:14,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:37:14,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:37:14,702 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:37:14,702 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:37:14,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:37:14 BasicIcfg [2021-10-07 15:37:14,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:37:14,706 INFO L168 Benchmark]: Toolchain (without parser) took 47677.15 ms. Allocated memory was 170.9 MB in the beginning and 222.3 MB in the end (delta: 51.4 MB). Free memory was 146.4 MB in the beginning and 185.0 MB in the end (delta: -38.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:14,706 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:37:14,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.88 ms. Allocated memory is still 170.9 MB. Free memory was 145.9 MB in the beginning and 135.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:14,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.03 ms. Allocated memory is still 170.9 MB. Free memory was 135.4 MB in the beginning and 133.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:14,707 INFO L168 Benchmark]: Boogie Preprocessor took 32.85 ms. Allocated memory is still 170.9 MB. Free memory was 133.3 MB in the beginning and 132.3 MB in the end (delta: 997.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:14,708 INFO L168 Benchmark]: RCFGBuilder took 646.00 ms. Allocated memory is still 170.9 MB. Free memory was 132.2 MB in the beginning and 116.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:37:14,708 INFO L168 Benchmark]: TraceAbstraction took 46531.20 ms. Allocated memory was 170.9 MB in the beginning and 222.3 MB in the end (delta: 51.4 MB). Free memory was 116.5 MB in the beginning and 185.0 MB in the end (delta: -68.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:37:14,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 396.88 ms. Allocated memory is still 170.9 MB. Free memory was 145.9 MB in the beginning and 135.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.03 ms. Allocated memory is still 170.9 MB. Free memory was 135.4 MB in the beginning and 133.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.85 ms. Allocated memory is still 170.9 MB. Free memory was 133.3 MB in the beginning and 132.3 MB in the end (delta: 997.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 646.00 ms. Allocated memory is still 170.9 MB. Free memory was 132.2 MB in the beginning and 116.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 46531.20 ms. Allocated memory was 170.9 MB in the beginning and 222.3 MB in the end (delta: 51.4 MB). Free memory was 116.5 MB in the beginning and 185.0 MB in the end (delta: -68.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13772.3ms, 155 PlacesBefore, 43 PlacesAfterwards, 156 TransitionsBefore, 33 TransitionsAfterwards, 3888 CoEnabledTransitionPairs, 7 FixpointIterations, 76 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 19 ConcurrentYvCompositions, 11 ChoiceCompositions, 177 TotalNumberOfCompositions, 3949 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3949, positive: 3949, positive conditional: 0, positive unconditional: 3949, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2782, positive: 2782, positive conditional: 0, positive unconditional: 2782, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2782, positive: 2782, positive conditional: 0, positive unconditional: 2782, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3949, positive: 1167, positive conditional: 0, positive unconditional: 1167, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2782, unknown conditional: 0, unknown unconditional: 2782] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, 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 - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 73]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 73]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 79]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 58]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 197 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 46248.3ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 20.7ms, AutomataDifference: 5646.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13846.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 238 SDtfs, 392 SDslu, 273 SDs, 0 SdLazy, 176 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 750.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 9451.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 126.8ms AutomataMinimizationTime, 13 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 144.7ms SsaConstructionTime, 688.6ms SatisfiabilityAnalysisTime, 21663.2ms InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 228 ConstructedInterpolants, 60 QuantifiedInterpolants, 7523 SizeOfPredicates, 126 NumberOfNonLiveVariables, 787 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 15:37:14,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...