/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/test-easy7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 21:43:34,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 21:43:34,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 21:43:34,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 21:43:34,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 21:43:34,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 21:43:34,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 21:43:34,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 21:43:34,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 21:43:34,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 21:43:34,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 21:43:34,799 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 21:43:34,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 21:43:34,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 21:43:34,801 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 21:43:34,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 21:43:34,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 21:43:34,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 21:43:34,803 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 21:43:34,803 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 21:43:34,803 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 21:43:34,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 21:43:34,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 21:43:34,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 21:43:34,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 21:43:34,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 21:43:34,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 21:43:34,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 21:43:34,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 21:43:34,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 21:43:34,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:43:34,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 21:43:34,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 21:43:34,807 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 21:43:34,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 21:43:34,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 21:43:34,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 21:43:34,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 21:43:35,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 21:43:35,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 21:43:35,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 21:43:35,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 21:43:35,257 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 21:43:35,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy7.wvr.c [2021-10-13 21:43:35,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1100e30b7/ec0b91e4be2748038a44f4d3c4a1539e/FLAGfed943975 [2021-10-13 21:43:36,141 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 21:43:36,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy7.wvr.c [2021-10-13 21:43:36,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1100e30b7/ec0b91e4be2748038a44f4d3c4a1539e/FLAGfed943975 [2021-10-13 21:43:36,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1100e30b7/ec0b91e4be2748038a44f4d3c4a1539e [2021-10-13 21:43:36,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 21:43:36,533 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 21:43:36,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 21:43:36,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 21:43:36,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 21:43:36,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d096f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36, skipping insertion in model container [2021-10-13 21:43:36,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 21:43:36,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:43:36,803 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/test-easy7.wvr.c[1872,1885] [2021-10-13 21:43:36,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:43:36,823 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 21:43:36,847 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/test-easy7.wvr.c[1872,1885] [2021-10-13 21:43:36,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:43:36,869 INFO L208 MainTranslator]: Completed translation [2021-10-13 21:43:36,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36 WrapperNode [2021-10-13 21:43:36,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 21:43:36,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 21:43:36,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 21:43:36,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 21:43:36,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 21:43:36,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 21:43:36,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 21:43:36,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 21:43:36,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 21:43:36,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 21:43:36,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 21:43:36,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 21:43:36,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (1/1) ... [2021-10-13 21:43:36,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:43:36,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:43:36,990 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) [2021-10-13 21:43:37,015 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 [2021-10-13 21:43:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 21:43:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 21:43:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 21:43:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 21:43:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 21:43:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 21:43:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 21:43:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 21:43:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 21:43:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 21:43:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 21:43:37,067 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 21:43:37,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 21:43:37,502 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 21:43:37,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:43:37 BoogieIcfgContainer [2021-10-13 21:43:37,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 21:43:37,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 21:43:37,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 21:43:37,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 21:43:37,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:43:36" (1/3) ... [2021-10-13 21:43:37,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dfee64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:43:37, skipping insertion in model container [2021-10-13 21:43:37,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:43:36" (2/3) ... [2021-10-13 21:43:37,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dfee64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:43:37, skipping insertion in model container [2021-10-13 21:43:37,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:43:37" (3/3) ... [2021-10-13 21:43:37,525 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2021-10-13 21:43:37,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 21:43:37,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-13 21:43:37,532 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 21:43:37,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,657 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,657 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:43:37,701 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 21:43:37,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 21:43:37,805 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 [2021-10-13 21:43:37,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-13 21:43:37,848 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 21:43:37,872 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 212 flow [2021-10-13 21:43:37,876 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 212 flow [2021-10-13 21:43:37,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 212 flow [2021-10-13 21:43:37,974 INFO L129 PetriNetUnfolder]: 2/96 cut-off events. [2021-10-13 21:43:37,974 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 21:43:37,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 2/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-13 21:43:37,984 INFO L116 LiptonReduction]: Number of co-enabled transitions 1036 [2021-10-13 21:43:45,899 INFO L131 LiptonReduction]: Checked pairs total: 994 [2021-10-13 21:43:45,899 INFO L133 LiptonReduction]: Total number of compositions: 101 [2021-10-13 21:43:45,919 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 62 flow [2021-10-13 21:43:45,932 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 21:43:45,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:45,941 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 21:43:45,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:43:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:45,948 INFO L82 PathProgramCache]: Analyzing trace with hash 364, now seen corresponding path program 1 times [2021-10-13 21:43:45,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:45,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817064178] [2021-10-13 21:43:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:45,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:45,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:45,981 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) [2021-10-13 21:43:45,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 21:43:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:46,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 21:43:46,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:46,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:46,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:46,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817064178] [2021-10-13 21:43:46,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817064178] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:46,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:46,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 21:43:46,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589801507] [2021-10-13 21:43:46,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 21:43:46,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 21:43:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 21:43:46,124 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-10-13 21:43:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:46,141 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-10-13 21:43:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 21:43:46,142 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 [2021-10-13 21:43:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:46,150 INFO L225 Difference]: With dead ends: 36 [2021-10-13 21:43:46,150 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 21:43:46,152 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 [2021-10-13 21:43:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 21:43:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 21:43:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-10-13 21:43:46,187 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 1 [2021-10-13 21:43:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:46,187 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-13 21:43:46,187 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) [2021-10-13 21:43:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-10-13 21:43:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:43:46,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:46,188 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:43:46,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 21:43:46,401 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 [2021-10-13 21:43:46,402 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:43:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:46,403 INFO L82 PathProgramCache]: Analyzing trace with hash 359259, now seen corresponding path program 1 times [2021-10-13 21:43:46,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:46,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950032172] [2021-10-13 21:43:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:46,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:46,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:46,406 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) [2021-10-13 21:43:46,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 21:43:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:46,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 21:43:46,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:46,721 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-13 21:43:46,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-13 21:43:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:46,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:46,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:46,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950032172] [2021-10-13 21:43:46,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950032172] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:46,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:46,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:43:46,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26528988] [2021-10-13 21:43:46,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:43:46,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:43:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:46,924 INFO L87 Difference]: Start difference. First operand 36 states and 56 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) [2021-10-13 21:43:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:46,962 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-10-13 21:43:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:43:46,964 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 [2021-10-13 21:43:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:46,966 INFO L225 Difference]: With dead ends: 32 [2021-10-13 21:43:46,966 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 21:43:46,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 21:43:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-13 21:43:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2021-10-13 21:43:46,980 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 3 [2021-10-13 21:43:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:46,980 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2021-10-13 21:43:46,981 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) [2021-10-13 21:43:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2021-10-13 21:43:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:43:46,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:46,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:43:46,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:47,182 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 [2021-10-13 21:43:47,184 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:43:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:47,185 INFO L82 PathProgramCache]: Analyzing trace with hash 359260, now seen corresponding path program 1 times [2021-10-13 21:43:47,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:47,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464393247] [2021-10-13 21:43:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:47,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:47,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:47,188 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) [2021-10-13 21:43:47,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 21:43:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:47,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:43:47,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:47,249 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 21:43:47,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-13 21:43:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:47,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:47,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:47,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464393247] [2021-10-13 21:43:47,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464393247] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:47,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:47,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:43:47,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552769492] [2021-10-13 21:43:47,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:43:47,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:43:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:43:47,285 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:47,305 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2021-10-13 21:43:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:43:47,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 21:43:47,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:47,306 INFO L225 Difference]: With dead ends: 28 [2021-10-13 21:43:47,306 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 21:43:47,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:43:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 21:43:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 21:43:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 44 transitions. [2021-10-13 21:43:47,311 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 44 transitions. Word has length 3 [2021-10-13 21:43:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:47,312 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 44 transitions. [2021-10-13 21:43:47,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2021-10-13 21:43:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:43:47,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:47,313 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:43:47,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 21:43:47,523 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 [2021-10-13 21:43:47,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:43:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash 345254396, now seen corresponding path program 1 times [2021-10-13 21:43:47,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:47,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637220874] [2021-10-13 21:43:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:47,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:47,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:47,529 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) [2021-10-13 21:43:47,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 21:43:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:47,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:43:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:47,602 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 21:43:47,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-13 21:43:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:47,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:47,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:47,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637220874] [2021-10-13 21:43:47,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637220874] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:47,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:47,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:43:47,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991353348] [2021-10-13 21:43:47,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:43:47,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:43:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:43:47,673 INFO L87 Difference]: Start difference. First operand 28 states and 44 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) [2021-10-13 21:43:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:47,697 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2021-10-13 21:43:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:43:47,698 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 [2021-10-13 21:43:47,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:47,699 INFO L225 Difference]: With dead ends: 24 [2021-10-13 21:43:47,699 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 21:43:47,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:43:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 21:43:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 21:43:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2021-10-13 21:43:47,708 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 36 transitions. Word has length 5 [2021-10-13 21:43:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:47,709 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-13 21:43:47,709 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) [2021-10-13 21:43:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2021-10-13 21:43:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:43:47,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:47,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:43:47,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:47,913 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 [2021-10-13 21:43:47,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:43:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash 345254397, now seen corresponding path program 1 times [2021-10-13 21:43:47,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:47,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278964645] [2021-10-13 21:43:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:47,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:47,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:47,917 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) [2021-10-13 21:43:47,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 21:43:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:47,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:43:47,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:48,103 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-13 21:43:48,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 48 [2021-10-13 21:43:48,119 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 49 treesize of output 47 [2021-10-13 21:43:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:48,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:48,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:48,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278964645] [2021-10-13 21:43:48,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278964645] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:48,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:48,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:43:48,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442375459] [2021-10-13 21:43:48,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:43:48,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:43:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:48,419 INFO L87 Difference]: Start difference. First operand 24 states and 36 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) [2021-10-13 21:43:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:48,439 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2021-10-13 21:43:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:43:48,442 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 [2021-10-13 21:43:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:48,442 INFO L225 Difference]: With dead ends: 20 [2021-10-13 21:43:48,442 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 21:43:48,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 21:43:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-13 21:43:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-10-13 21:43:48,448 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 5 [2021-10-13 21:43:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:48,448 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-10-13 21:43:48,449 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) [2021-10-13 21:43:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2021-10-13 21:43:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 21:43:48,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:48,450 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:48,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:48,660 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 [2021-10-13 21:43:48,661 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:43:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash 709818662, now seen corresponding path program 1 times [2021-10-13 21:43:48,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:48,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818741514] [2021-10-13 21:43:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:48,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:48,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:48,665 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) [2021-10-13 21:43:48,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 21:43:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:48,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:43:48,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:48,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:48,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:48,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818741514] [2021-10-13 21:43:48,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818741514] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:48,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:48,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 21:43:48,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489196362] [2021-10-13 21:43:48,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:43:48,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:43:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:48,832 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:48,872 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-13 21:43:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:43:48,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 21:43:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:48,873 INFO L225 Difference]: With dead ends: 25 [2021-10-13 21:43:48,873 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 21:43:48,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 21:43:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-13 21:43:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-10-13 21:43:48,877 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2021-10-13 21:43:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:48,877 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-10-13 21:43:48,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-10-13 21:43:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 21:43:48,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:48,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:48,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:49,091 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 [2021-10-13 21:43:49,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:43:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash -178267702, now seen corresponding path program 2 times [2021-10-13 21:43:49,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:49,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045812874] [2021-10-13 21:43:49,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:43:49,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:49,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:49,097 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) [2021-10-13 21:43:49,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 21:43:49,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:43:49,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:49,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:43:49,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:49,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:49,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:49,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045812874] [2021-10-13 21:43:49,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045812874] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:49,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:49,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 21:43:49,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778754765] [2021-10-13 21:43:49,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:43:49,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:43:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:49,275 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:49,298 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2021-10-13 21:43:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:43:49,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 21:43:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:49,299 INFO L225 Difference]: With dead ends: 17 [2021-10-13 21:43:49,299 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 21:43:49,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:43:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 21:43:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 21:43:49,301 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) [2021-10-13 21:43:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 21:43:49,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-13 21:43:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:49,304 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 21:43:49,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 21:43:49,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 21:43:49,307 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:43:49,308 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:43:49,308 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:43:49,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:43:49,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:43:49,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:43:49,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:43:49,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:43:49,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:43:49,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:43:49,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:43:49,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:43:49,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:49,524 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 [2021-10-13 21:43:49,531 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:43:49,531 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:43:49,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:43:49 BasicIcfg [2021-10-13 21:43:49,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:43:49,535 INFO L168 Benchmark]: Toolchain (without parser) took 13016.84 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 134.8 MB in the beginning and 67.2 MB in the end (delta: 67.6 MB). Peak memory consumption was 100.5 MB. Max. memory is 8.0 GB. [2021-10-13 21:43:49,536 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 158.3 MB. Free memory is still 133.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:43:49,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.24 ms. Allocated memory is still 158.3 MB. Free memory was 134.5 MB in the beginning and 123.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 21:43:49,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:43:49,539 INFO L168 Benchmark]: Boogie Preprocessor took 30.69 ms. Allocated memory is still 158.3 MB. Free memory was 122.1 MB in the beginning and 120.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 21:43:49,540 INFO L168 Benchmark]: RCFGBuilder took 554.44 ms. Allocated memory is still 158.3 MB. Free memory was 120.7 MB in the beginning and 108.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-13 21:43:49,541 INFO L168 Benchmark]: TraceAbstraction took 12027.76 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 108.1 MB in the beginning and 67.2 MB in the end (delta: 40.9 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. [2021-10-13 21:43:49,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 158.3 MB. Free memory is still 133.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 332.24 ms. Allocated memory is still 158.3 MB. Free memory was 134.5 MB in the beginning and 123.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.69 ms. Allocated memory is still 158.3 MB. Free memory was 122.1 MB in the beginning and 120.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 554.44 ms. Allocated memory is still 158.3 MB. Free memory was 120.7 MB in the beginning and 108.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12027.76 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 108.1 MB in the beginning and 67.2 MB in the end (delta: 40.9 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8023.2ms, 103 PlacesBefore, 30 PlacesAfterwards, 98 TransitionsBefore, 23 TransitionsAfterwards, 1036 CoEnabledTransitionPairs, 6 FixpointIterations, 55 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 101 TotalNumberOfCompositions, 994 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 994, positive: 994, positive conditional: 0, positive unconditional: 994, 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: 675, positive: 675, positive conditional: 0, positive unconditional: 675, 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: 675, positive: 675, positive conditional: 0, positive unconditional: 675, 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: 994, positive: 319, positive conditional: 0, positive unconditional: 319, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 675, unknown conditional: 0, unknown unconditional: 675] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, 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: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: 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 5 procedures, 129 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 11741.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 10.9ms, AutomataDifference: 254.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8126.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 76 SDtfs, 45 SDslu, 27 SDs, 0 SdLazy, 33 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 59.9ms SsaConstructionTime, 169.7ms SatisfiabilityAnalysisTime, 1244.8ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 4 QuantifiedInterpolants, 412 SizeOfPredicates, 15 NumberOfNonLiveVariables, 271 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 21:43:49,639 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...