/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/clever.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:56:55,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:56:55,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:56:55,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:56:55,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 20:56:55,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 20:56:55,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 20:56:55,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 20:56:55,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 20:56:55,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 20:56:55,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 20:56:55,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 20:56:55,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 20:56:55,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 20:56:55,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 20:56:55,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 20:56:55,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 20:56:55,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 20:56:55,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 20:56:55,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 20:56:55,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 20:56:55,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 20:56:55,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 20:56:55,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 20:56:55,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 20:56:55,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 20:56:55,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 20:56:55,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 20:56:55,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:56:55,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:56:55,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:56:55,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:56:55,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:56:55,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:56:55,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:56:55,386 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:56:55,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:56:55,386 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:56:55,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:56:55,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:56:55,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:56:55,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:56:55,388 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:56:55,388 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:56:55,389 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:56:55,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:56:55,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:56:55,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:56:55,390 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:56:55,390 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:56:55,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:56:55,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:56:55,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:56:55,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:56:55,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:55,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:56:55,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:56:55,392 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:56:55,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:56:55,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:56:55,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:56:55,393 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:56:55,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:56:55,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:56:55,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:56:55,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:56:55,911 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:56:55,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/clever.wvr.c [2021-10-06 20:56:55,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c2f2dd69/ae7d99055bea48ea9241e501a6e9dff1/FLAG19e11c592 [2021-10-06 20:56:56,530 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:56:56,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2021-10-06 20:56:56,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c2f2dd69/ae7d99055bea48ea9241e501a6e9dff1/FLAG19e11c592 [2021-10-06 20:56:56,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c2f2dd69/ae7d99055bea48ea9241e501a6e9dff1 [2021-10-06 20:56:56,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:56:56,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:56:56,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:56,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:56:56,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:56:56,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:56" (1/1) ... [2021-10-06 20:56:56,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b2ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:56, skipping insertion in model container [2021-10-06 20:56:56,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:56" (1/1) ... [2021-10-06 20:56:56,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:56:56,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:56:57,123 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/clever.wvr.c[2053,2066] [2021-10-06 20:56:57,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,143 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:56:57,168 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/clever.wvr.c[2053,2066] [2021-10-06 20:56:57,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,189 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:56:57,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57 WrapperNode [2021-10-06 20:56:57,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:57,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:56:57,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:56:57,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:56:57,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:56:57,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:56:57,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:56:57,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:56:57,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:57,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:56:57,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 20:56:57,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 20:56:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:56:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:56:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:56:57,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:56:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:56:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:56:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:56:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:56:57,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:56:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:56:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:56:57,416 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:56:57,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:56:57,906 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-06 20:56:57,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:57 BoogieIcfgContainer [2021-10-06 20:56:57,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:56:57,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:56:57,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:56:57,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:56:57,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:56:56" (1/3) ... [2021-10-06 20:56:57,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4bba36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:57, skipping insertion in model container [2021-10-06 20:56:57,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (2/3) ... [2021-10-06 20:56:57,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4bba36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:57, skipping insertion in model container [2021-10-06 20:56:57,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:57" (3/3) ... [2021-10-06 20:56:57,920 INFO L111 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2021-10-06 20:56:57,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:56:57,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 20:56:57,927 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:56:57,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,966 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,966 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,967 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,967 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,967 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,967 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,980 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:57,995 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 20:56:58,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:56:58,065 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 20:56:58,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 20:56:58,085 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:56:58,099 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 115 transitions, 246 flow [2021-10-06 20:56:58,103 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 115 transitions, 246 flow [2021-10-06 20:56:58,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 115 transitions, 246 flow [2021-10-06 20:56:58,165 INFO L129 PetriNetUnfolder]: 9/113 cut-off events. [2021-10-06 20:56:58,166 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 20:56:58,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 9/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2021-10-06 20:56:58,174 INFO L116 LiptonReduction]: Number of co-enabled transitions 972 [2021-10-06 20:57:07,849 INFO L131 LiptonReduction]: Checked pairs total: 985 [2021-10-06 20:57:07,850 INFO L133 LiptonReduction]: Total number of compositions: 118 [2021-10-06 20:57:07,860 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 27 transitions, 70 flow [2021-10-06 20:57:07,873 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 51 states, 41 states have (on average 3.048780487804878) internal successors, (125), 50 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 3.048780487804878) internal successors, (125), 50 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:57:07,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:07,881 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:57:07,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash 444, now seen corresponding path program 1 times [2021-10-06 20:57:07,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:07,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179974142] [2021-10-06 20:57:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:07,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:07,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:07,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:07,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 20:57:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:07,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:57:07,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:07,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:07,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:07,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179974142] [2021-10-06 20:57:07,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179974142] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:07,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:08,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:57:08,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741982328] [2021-10-06 20:57:08,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:57:08,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:08,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:57:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:08,043 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 3.048780487804878) internal successors, (125), 50 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:08,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:08,063 INFO L93 Difference]: Finished difference Result 48 states and 122 transitions. [2021-10-06 20:57:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:57:08,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 20:57:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:08,079 INFO L225 Difference]: With dead ends: 48 [2021-10-06 20:57:08,079 INFO L226 Difference]: Without dead ends: 48 [2021-10-06 20:57:08,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-06 20:57:08,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-06 20:57:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 2.975609756097561) internal successors, (122), 47 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 122 transitions. [2021-10-06 20:57:08,130 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 122 transitions. Word has length 1 [2021-10-06 20:57:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:08,130 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 122 transitions. [2021-10-06 20:57:08,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 122 transitions. [2021-10-06 20:57:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:08,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:08,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:08,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:08,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:08,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:08,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:08,345 INFO L82 PathProgramCache]: Analyzing trace with hash 438147, now seen corresponding path program 1 times [2021-10-06 20:57:08,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:08,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593441953] [2021-10-06 20:57:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:08,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:08,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:08,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:08,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 20:57:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:08,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:08,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:08,673 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:57:08,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 20:57:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:09,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593441953] [2021-10-06 20:57:09,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593441953] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:09,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:09,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:09,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690757991] [2021-10-06 20:57:09,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:09,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:09,133 INFO L87 Difference]: Start difference. First operand 48 states and 122 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:09,164 INFO L93 Difference]: Finished difference Result 43 states and 111 transitions. [2021-10-06 20:57:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:09,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:57:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:09,166 INFO L225 Difference]: With dead ends: 43 [2021-10-06 20:57:09,167 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 20:57:09,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 20:57:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 20:57:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 2.9210526315789473) internal successors, (111), 42 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 111 transitions. [2021-10-06 20:57:09,176 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 111 transitions. Word has length 3 [2021-10-06 20:57:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:09,177 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 111 transitions. [2021-10-06 20:57:09,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 111 transitions. [2021-10-06 20:57:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:09,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:09,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:09,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:09,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,381 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:09,383 INFO L82 PathProgramCache]: Analyzing trace with hash 438149, now seen corresponding path program 1 times [2021-10-06 20:57:09,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:09,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197129401] [2021-10-06 20:57:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:09,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:09,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:09,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 20:57:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:09,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:09,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:09,530 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:57:09,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 20:57:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:09,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197129401] [2021-10-06 20:57:09,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197129401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:09,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:09,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:09,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259721831] [2021-10-06 20:57:09,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:09,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:09,675 INFO L87 Difference]: Start difference. First operand 43 states and 111 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:09,705 INFO L93 Difference]: Finished difference Result 38 states and 100 transitions. [2021-10-06 20:57:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:09,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:57:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:09,707 INFO L225 Difference]: With dead ends: 38 [2021-10-06 20:57:09,707 INFO L226 Difference]: Without dead ends: 38 [2021-10-06 20:57:09,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-06 20:57:09,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-06 20:57:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 2.857142857142857) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 100 transitions. [2021-10-06 20:57:09,715 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 100 transitions. Word has length 3 [2021-10-06 20:57:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:09,715 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 100 transitions. [2021-10-06 20:57:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 100 transitions. [2021-10-06 20:57:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:09,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:09,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:09,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-06 20:57:09,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:09,930 INFO L82 PathProgramCache]: Analyzing trace with hash 421069680, now seen corresponding path program 1 times [2021-10-06 20:57:09,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:09,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422907696] [2021-10-06 20:57:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:09,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:09,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:09,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 20:57:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:09,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:09,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:10,090 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-06 20:57:10,091 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 35 treesize of output 51 [2021-10-06 20:57:10,107 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 186 treesize of output 178 [2021-10-06 20:57:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:10,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:10,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:10,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422907696] [2021-10-06 20:57:10,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422907696] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:10,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:10,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:10,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006082699] [2021-10-06 20:57:10,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:10,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:10,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:10,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:10,471 INFO L87 Difference]: Start difference. First operand 38 states and 100 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:10,496 INFO L93 Difference]: Finished difference Result 32 states and 80 transitions. [2021-10-06 20:57:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:10,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:57:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:10,499 INFO L225 Difference]: With dead ends: 32 [2021-10-06 20:57:10,499 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 20:57:10,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 20:57:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 20:57:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 80 transitions. [2021-10-06 20:57:10,510 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 80 transitions. Word has length 5 [2021-10-06 20:57:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:10,511 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 80 transitions. [2021-10-06 20:57:10,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 80 transitions. [2021-10-06 20:57:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:10,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:10,514 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:10,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:10,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:10,727 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash 421069678, now seen corresponding path program 1 times [2021-10-06 20:57:10,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:10,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295859512] [2021-10-06 20:57:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:10,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:10,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:10,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 20:57:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:10,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:10,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:10,894 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:57:10,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 110 [2021-10-06 20:57:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:13,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:13,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:13,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295859512] [2021-10-06 20:57:13,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295859512] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:13,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:13,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:13,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671919461] [2021-10-06 20:57:13,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:13,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:13,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:13,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:13,787 INFO L87 Difference]: Start difference. First operand 32 states and 80 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:13,813 INFO L93 Difference]: Finished difference Result 26 states and 60 transitions. [2021-10-06 20:57:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:13,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:57:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:13,816 INFO L225 Difference]: With dead ends: 26 [2021-10-06 20:57:13,816 INFO L226 Difference]: Without dead ends: 26 [2021-10-06 20:57:13,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-06 20:57:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-06 20:57:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 60 transitions. [2021-10-06 20:57:13,820 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 60 transitions. Word has length 5 [2021-10-06 20:57:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:13,821 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 60 transitions. [2021-10-06 20:57:13,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 60 transitions. [2021-10-06 20:57:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 20:57:13,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:13,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:13,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:14,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1881663157, now seen corresponding path program 1 times [2021-10-06 20:57:14,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:14,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547061450] [2021-10-06 20:57:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:14,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:14,027 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:14,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 20:57:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:14,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:14,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:14,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547061450] [2021-10-06 20:57:14,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547061450] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:14,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:14,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:14,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944414395] [2021-10-06 20:57:14,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:14,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:14,260 INFO L87 Difference]: Start difference. First operand 26 states and 60 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:14,285 INFO L93 Difference]: Finished difference Result 49 states and 117 transitions. [2021-10-06 20:57:14,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:14,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 20:57:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:14,288 INFO L225 Difference]: With dead ends: 49 [2021-10-06 20:57:14,289 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 20:57:14,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 20:57:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-06 20:57:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 43 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 107 transitions. [2021-10-06 20:57:14,307 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 107 transitions. Word has length 11 [2021-10-06 20:57:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:14,308 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 107 transitions. [2021-10-06 20:57:14,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 107 transitions. [2021-10-06 20:57:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 20:57:14,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:14,313 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:14,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:14,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,527 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:14,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1798881911, now seen corresponding path program 1 times [2021-10-06 20:57:14,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:14,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597362757] [2021-10-06 20:57:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:14,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:14,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:14,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 20:57:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:14,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:14,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597362757] [2021-10-06 20:57:14,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597362757] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:14,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:14,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 20:57:14,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714555712] [2021-10-06 20:57:14,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 20:57:14,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:14,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 20:57:14,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 20:57:14,764 INFO L87 Difference]: Start difference. First operand 44 states and 107 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:14,958 INFO L93 Difference]: Finished difference Result 102 states and 236 transitions. [2021-10-06 20:57:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:57:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 20:57:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:14,961 INFO L225 Difference]: With dead ends: 102 [2021-10-06 20:57:14,961 INFO L226 Difference]: Without dead ends: 94 [2021-10-06 20:57:14,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:57:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-06 20:57:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2021-10-06 20:57:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 53 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2021-10-06 20:57:14,976 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 12 [2021-10-06 20:57:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:14,977 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2021-10-06 20:57:14,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2021-10-06 20:57:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 20:57:14,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:14,980 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:14,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:15,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:15,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:15,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:15,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1200140169, now seen corresponding path program 2 times [2021-10-06 20:57:15,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:15,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741049521] [2021-10-06 20:57:15,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:15,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:15,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:15,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 20:57:15,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:15,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:15,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 20:57:15,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:15,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:15,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:15,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741049521] [2021-10-06 20:57:15,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741049521] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 20:57:15,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 20:57:15,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-06 20:57:15,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730843010] [2021-10-06 20:57:15,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:15,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:15,475 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:15,527 INFO L93 Difference]: Finished difference Result 74 states and 196 transitions. [2021-10-06 20:57:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 20:57:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-10-06 20:57:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:15,533 INFO L225 Difference]: With dead ends: 74 [2021-10-06 20:57:15,533 INFO L226 Difference]: Without dead ends: 74 [2021-10-06 20:57:15,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-06 20:57:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2021-10-06 20:57:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.491228070175439) internal successors, (142), 57 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:15,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 142 transitions. [2021-10-06 20:57:15,544 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 142 transitions. Word has length 12 [2021-10-06 20:57:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:15,544 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 142 transitions. [2021-10-06 20:57:15,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:15,545 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 142 transitions. [2021-10-06 20:57:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:15,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:15,546 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:15,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:15,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:15,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:15,750 INFO L82 PathProgramCache]: Analyzing trace with hash -920096149, now seen corresponding path program 3 times [2021-10-06 20:57:15,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:15,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212237563] [2021-10-06 20:57:15,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:15,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:15,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:15,752 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:15,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 20:57:15,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:15,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:15,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:15,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:15,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:16,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:16,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212237563] [2021-10-06 20:57:16,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212237563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:16,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:16,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-06 20:57:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58489396] [2021-10-06 20:57:16,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 20:57:16,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 20:57:16,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:57:16,261 INFO L87 Difference]: Start difference. First operand 58 states and 142 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:17,073 INFO L93 Difference]: Finished difference Result 152 states and 379 transitions. [2021-10-06 20:57:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:57:17,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:17,077 INFO L225 Difference]: With dead ends: 152 [2021-10-06 20:57:17,077 INFO L226 Difference]: Without dead ends: 152 [2021-10-06 20:57:17,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 698.5ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-06 20:57:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 64. [2021-10-06 20:57:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.7777777777777777) internal successors, (175), 63 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 175 transitions. [2021-10-06 20:57:17,094 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 175 transitions. Word has length 13 [2021-10-06 20:57:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:17,094 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 175 transitions. [2021-10-06 20:57:17,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 175 transitions. [2021-10-06 20:57:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:17,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:17,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:17,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:17,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:17,307 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:17,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash -407391854, now seen corresponding path program 1 times [2021-10-06 20:57:17,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:17,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873906687] [2021-10-06 20:57:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:17,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:17,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:17,310 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:17,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 20:57:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:17,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:17,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:17,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:17,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:17,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873906687] [2021-10-06 20:57:17,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873906687] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:17,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:17,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:17,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195216951] [2021-10-06 20:57:17,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:17,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:17,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:17,813 INFO L87 Difference]: Start difference. First operand 64 states and 175 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:18,036 INFO L93 Difference]: Finished difference Result 180 states and 483 transitions. [2021-10-06 20:57:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:57:18,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:18,039 INFO L225 Difference]: With dead ends: 180 [2021-10-06 20:57:18,039 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 20:57:18,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 172.1ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:18,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 20:57:18,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 114. [2021-10-06 20:57:18,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.9557522123893807) internal successors, (334), 113 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 334 transitions. [2021-10-06 20:57:18,049 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 334 transitions. Word has length 14 [2021-10-06 20:57:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:18,049 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 334 transitions. [2021-10-06 20:57:18,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 334 transitions. [2021-10-06 20:57:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:18,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:18,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:18,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:18,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:18,264 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:18,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1385575342, now seen corresponding path program 2 times [2021-10-06 20:57:18,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:18,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709155263] [2021-10-06 20:57:18,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:18,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:18,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:18,268 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:18,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 20:57:18,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:18,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:18,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:18,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:18,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:18,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:18,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709155263] [2021-10-06 20:57:18,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709155263] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:18,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:18,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:18,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873018774] [2021-10-06 20:57:18,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:18,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:18,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:18,833 INFO L87 Difference]: Start difference. First operand 114 states and 334 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:19,439 INFO L93 Difference]: Finished difference Result 351 states and 952 transitions. [2021-10-06 20:57:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:57:19,440 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:19,443 INFO L225 Difference]: With dead ends: 351 [2021-10-06 20:57:19,443 INFO L226 Difference]: Without dead ends: 291 [2021-10-06 20:57:19,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 411.7ms TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:57:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-06 20:57:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 142. [2021-10-06 20:57:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.148936170212766) internal successors, (444), 141 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 444 transitions. [2021-10-06 20:57:19,456 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 444 transitions. Word has length 14 [2021-10-06 20:57:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:19,456 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 444 transitions. [2021-10-06 20:57:19,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 444 transitions. [2021-10-06 20:57:19,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:19,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:19,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:19,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:19,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:19,671 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:19,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1007585134, now seen corresponding path program 3 times [2021-10-06 20:57:19,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:19,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916541010] [2021-10-06 20:57:19,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:19,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:19,675 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:19,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 20:57:19,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:57:19,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:19,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:57:19,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:20,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:20,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:20,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:20,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916541010] [2021-10-06 20:57:20,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916541010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:20,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:20,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:20,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507878746] [2021-10-06 20:57:20,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:20,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:20,232 INFO L87 Difference]: Start difference. First operand 142 states and 444 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:20,510 INFO L93 Difference]: Finished difference Result 290 states and 875 transitions. [2021-10-06 20:57:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:57:20,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:20,513 INFO L225 Difference]: With dead ends: 290 [2021-10-06 20:57:20,514 INFO L226 Difference]: Without dead ends: 240 [2021-10-06 20:57:20,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 250.2ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-06 20:57:20,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 162. [2021-10-06 20:57:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 3.248447204968944) internal successors, (523), 161 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:20,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 523 transitions. [2021-10-06 20:57:20,526 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 523 transitions. Word has length 14 [2021-10-06 20:57:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 523 transitions. [2021-10-06 20:57:20,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 523 transitions. [2021-10-06 20:57:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:20,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:20,538 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:20,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:20,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:20,745 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:20,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:20,746 INFO L82 PathProgramCache]: Analyzing trace with hash 757739238, now seen corresponding path program 1 times [2021-10-06 20:57:20,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:20,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833431365] [2021-10-06 20:57:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:20,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:20,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:20,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:20,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 20:57:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:20,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:20,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 20:57:21,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 20:57:21,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:21,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833431365] [2021-10-06 20:57:21,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833431365] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:21,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:21,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 20:57:21,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295226237] [2021-10-06 20:57:21,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:21,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:21,311 INFO L87 Difference]: Start difference. First operand 162 states and 523 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:21,844 INFO L93 Difference]: Finished difference Result 278 states and 806 transitions. [2021-10-06 20:57:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:57:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:21,848 INFO L225 Difference]: With dead ends: 278 [2021-10-06 20:57:21,848 INFO L226 Difference]: Without dead ends: 268 [2021-10-06 20:57:21,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 399.6ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:57:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-06 20:57:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 196. [2021-10-06 20:57:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.2102564102564104) internal successors, (626), 195 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 626 transitions. [2021-10-06 20:57:21,858 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 626 transitions. Word has length 16 [2021-10-06 20:57:21,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:21,859 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 626 transitions. [2021-10-06 20:57:21,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 626 transitions. [2021-10-06 20:57:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:21,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:21,860 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:21,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:22,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:22,073 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2017632026, now seen corresponding path program 2 times [2021-10-06 20:57:22,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:22,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378717995] [2021-10-06 20:57:22,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:22,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:22,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:22,077 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:22,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 20:57:22,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:22,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:22,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:57:22,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 20:57:22,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 20:57:22,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:22,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378717995] [2021-10-06 20:57:22,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378717995] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:22,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:22,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 20:57:22,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691471295] [2021-10-06 20:57:22,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:22,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:22,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:22,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:22,696 INFO L87 Difference]: Start difference. First operand 196 states and 626 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:23,617 INFO L93 Difference]: Finished difference Result 310 states and 862 transitions. [2021-10-06 20:57:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 20:57:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:23,623 INFO L225 Difference]: With dead ends: 310 [2021-10-06 20:57:23,623 INFO L226 Difference]: Without dead ends: 304 [2021-10-06 20:57:23,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 671.4ms TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:57:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-06 20:57:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 206. [2021-10-06 20:57:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.2146341463414636) internal successors, (659), 205 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 659 transitions. [2021-10-06 20:57:23,640 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 659 transitions. Word has length 16 [2021-10-06 20:57:23,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:23,642 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 659 transitions. [2021-10-06 20:57:23,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 659 transitions. [2021-10-06 20:57:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:23,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:23,644 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:23,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:23,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:23,857 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:23,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:23,858 INFO L82 PathProgramCache]: Analyzing trace with hash -859971886, now seen corresponding path program 3 times [2021-10-06 20:57:23,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:23,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125456619] [2021-10-06 20:57:23,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:23,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:23,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:23,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:23,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 20:57:24,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:57:24,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:24,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:57:24,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:24,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:24,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:24,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125456619] [2021-10-06 20:57:24,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125456619] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:24,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:24,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:57:24,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82045334] [2021-10-06 20:57:24,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:24,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:24,803 INFO L87 Difference]: Start difference. First operand 206 states and 659 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:26,793 INFO L93 Difference]: Finished difference Result 542 states and 1608 transitions. [2021-10-06 20:57:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 20:57:26,794 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:26,799 INFO L225 Difference]: With dead ends: 542 [2021-10-06 20:57:26,799 INFO L226 Difference]: Without dead ends: 502 [2021-10-06 20:57:26,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1814.6ms TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2021-10-06 20:57:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-06 20:57:26,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 326. [2021-10-06 20:57:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.3446153846153845) internal successors, (1087), 325 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1087 transitions. [2021-10-06 20:57:26,817 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1087 transitions. Word has length 16 [2021-10-06 20:57:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:26,817 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1087 transitions. [2021-10-06 20:57:26,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1087 transitions. [2021-10-06 20:57:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:26,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:26,820 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:26,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:27,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:27,032 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:27,033 INFO L82 PathProgramCache]: Analyzing trace with hash 932995310, now seen corresponding path program 4 times [2021-10-06 20:57:27,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:27,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702499744] [2021-10-06 20:57:27,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:27,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:27,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:27,036 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:27,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 20:57:27,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:27,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:27,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:57:27,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:27,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:27,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:27,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702499744] [2021-10-06 20:57:27,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702499744] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:27,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:27,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:57:27,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237176730] [2021-10-06 20:57:27,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:27,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:27,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:27,891 INFO L87 Difference]: Start difference. First operand 326 states and 1087 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:30,364 INFO L93 Difference]: Finished difference Result 740 states and 2234 transitions. [2021-10-06 20:57:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 20:57:30,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:30,370 INFO L225 Difference]: With dead ends: 740 [2021-10-06 20:57:30,371 INFO L226 Difference]: Without dead ends: 715 [2021-10-06 20:57:30,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2229.9ms TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2021-10-06 20:57:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-10-06 20:57:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 428. [2021-10-06 20:57:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.489461358313817) internal successors, (1490), 427 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1490 transitions. [2021-10-06 20:57:30,395 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1490 transitions. Word has length 16 [2021-10-06 20:57:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:30,396 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1490 transitions. [2021-10-06 20:57:30,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1490 transitions. [2021-10-06 20:57:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:30,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:30,398 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:30,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-06 20:57:30,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:30,611 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:30,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:30,613 INFO L82 PathProgramCache]: Analyzing trace with hash 505147466, now seen corresponding path program 5 times [2021-10-06 20:57:30,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:30,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514086292] [2021-10-06 20:57:30,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:30,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:30,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:30,616 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:30,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 20:57:30,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:57:30,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:30,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:30,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:30,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:31,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:31,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514086292] [2021-10-06 20:57:31,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514086292] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:31,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:31,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 20:57:31,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924800072] [2021-10-06 20:57:31,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:31,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:31,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:31,419 INFO L87 Difference]: Start difference. First operand 428 states and 1490 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:31,868 INFO L93 Difference]: Finished difference Result 542 states and 1829 transitions. [2021-10-06 20:57:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 20:57:31,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:31,873 INFO L225 Difference]: With dead ends: 542 [2021-10-06 20:57:31,874 INFO L226 Difference]: Without dead ends: 532 [2021-10-06 20:57:31,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 488.9ms TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-10-06 20:57:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-06 20:57:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 482. [2021-10-06 20:57:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 3.528066528066528) internal successors, (1697), 481 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1697 transitions. [2021-10-06 20:57:31,897 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1697 transitions. Word has length 16 [2021-10-06 20:57:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:31,898 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1697 transitions. [2021-10-06 20:57:31,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1697 transitions. [2021-10-06 20:57:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:31,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:31,901 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:31,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:32,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:32,114 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash 874211282, now seen corresponding path program 6 times [2021-10-06 20:57:32,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:32,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95957722] [2021-10-06 20:57:32,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:32,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:32,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:32,118 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:32,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 20:57:32,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:57:32,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:32,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:57:32,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:32,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:33,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:33,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95957722] [2021-10-06 20:57:33,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95957722] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:33,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:33,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:57:33,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613945978] [2021-10-06 20:57:33,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:33,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:33,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:33,147 INFO L87 Difference]: Start difference. First operand 482 states and 1697 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:35,630 INFO L93 Difference]: Finished difference Result 765 states and 2552 transitions. [2021-10-06 20:57:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 20:57:35,632 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:35,639 INFO L225 Difference]: With dead ends: 765 [2021-10-06 20:57:35,639 INFO L226 Difference]: Without dead ends: 738 [2021-10-06 20:57:35,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2124.5ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 20:57:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-06 20:57:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 598. [2021-10-06 20:57:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 3.6381909547738696) internal successors, (2172), 597 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 2172 transitions. [2021-10-06 20:57:35,671 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 2172 transitions. Word has length 16 [2021-10-06 20:57:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:35,671 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 2172 transitions. [2021-10-06 20:57:35,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 2172 transitions. [2021-10-06 20:57:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:35,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:35,674 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:35,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:35,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:35,888 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:35,890 INFO L82 PathProgramCache]: Analyzing trace with hash -948093586, now seen corresponding path program 7 times [2021-10-06 20:57:35,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:35,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969345087] [2021-10-06 20:57:35,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:57:35,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:35,892 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:35,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 20:57:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:36,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:57:36,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:36,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:36,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:36,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969345087] [2021-10-06 20:57:36,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969345087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:36,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:36,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:57:36,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821996312] [2021-10-06 20:57:36,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:36,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:36,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:36,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:36,914 INFO L87 Difference]: Start difference. First operand 598 states and 2172 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:38,950 INFO L93 Difference]: Finished difference Result 839 states and 2877 transitions. [2021-10-06 20:57:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 20:57:38,952 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:38,959 INFO L225 Difference]: With dead ends: 839 [2021-10-06 20:57:38,959 INFO L226 Difference]: Without dead ends: 812 [2021-10-06 20:57:38,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1841.0ms TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-10-06 20:57:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-06 20:57:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 682. [2021-10-06 20:57:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 3.682819383259912) internal successors, (2508), 681 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2508 transitions. [2021-10-06 20:57:38,995 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2508 transitions. Word has length 16 [2021-10-06 20:57:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:38,996 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 2508 transitions. [2021-10-06 20:57:38,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2508 transitions. [2021-10-06 20:57:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:39,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:39,000 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:39,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:39,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:39,214 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:39,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1327159634, now seen corresponding path program 8 times [2021-10-06 20:57:39,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:39,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47836593] [2021-10-06 20:57:39,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:39,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:39,218 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:39,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 20:57:39,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:39,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:39,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:57:39,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:39,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:40,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:40,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47836593] [2021-10-06 20:57:40,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47836593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:40,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:40,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:57:40,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551777573] [2021-10-06 20:57:40,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:57:40,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:57:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:40,128 INFO L87 Difference]: Start difference. First operand 682 states and 2508 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:42,192 INFO L93 Difference]: Finished difference Result 1084 states and 3696 transitions. [2021-10-06 20:57:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 20:57:42,193 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:42,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:42,202 INFO L225 Difference]: With dead ends: 1084 [2021-10-06 20:57:42,202 INFO L226 Difference]: Without dead ends: 1048 [2021-10-06 20:57:42,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1899.6ms TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2021-10-06 20:57:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-06 20:57:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 864. [2021-10-06 20:57:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.7114716106604866) internal successors, (3203), 863 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3203 transitions. [2021-10-06 20:57:42,244 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3203 transitions. Word has length 16 [2021-10-06 20:57:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:42,244 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3203 transitions. [2021-10-06 20:57:42,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3203 transitions. [2021-10-06 20:57:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:57:42,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:42,249 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:42,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:42,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:42,459 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1973600914, now seen corresponding path program 4 times [2021-10-06 20:57:42,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:42,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83257587] [2021-10-06 20:57:42,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:42,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:42,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:42,463 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:42,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 20:57:42,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:42,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:42,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:42,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:42,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:43,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:43,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83257587] [2021-10-06 20:57:43,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83257587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:43,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:43,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 20:57:43,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512067414] [2021-10-06 20:57:43,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:43,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:43,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:43,094 INFO L87 Difference]: Start difference. First operand 864 states and 3203 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:44,732 INFO L93 Difference]: Finished difference Result 1362 states and 4665 transitions. [2021-10-06 20:57:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 20:57:44,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:57:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:44,744 INFO L225 Difference]: With dead ends: 1362 [2021-10-06 20:57:44,744 INFO L226 Difference]: Without dead ends: 1362 [2021-10-06 20:57:44,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1032.2ms TimeCoverageRelationStatistics Valid=249, Invalid=563, Unknown=0, NotChecked=0, Total=812 [2021-10-06 20:57:44,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-10-06 20:57:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1004. [2021-10-06 20:57:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 3.7098703888334996) internal successors, (3721), 1003 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3721 transitions. [2021-10-06 20:57:44,791 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3721 transitions. Word has length 16 [2021-10-06 20:57:44,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:44,792 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3721 transitions. [2021-10-06 20:57:44,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3721 transitions. [2021-10-06 20:57:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:57:44,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:44,797 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:44,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:45,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:45,010 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash -452097941, now seen corresponding path program 9 times [2021-10-06 20:57:45,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:45,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941602349] [2021-10-06 20:57:45,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:45,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:45,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:45,014 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:45,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 20:57:45,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:57:45,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:45,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:45,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 20:57:45,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 20:57:45,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:45,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941602349] [2021-10-06 20:57:45,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941602349] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:45,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:45,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-06 20:57:45,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072976035] [2021-10-06 20:57:45,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 20:57:45,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 20:57:45,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:57:45,383 INFO L87 Difference]: Start difference. First operand 1004 states and 3721 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:45,436 INFO L93 Difference]: Finished difference Result 938 states and 3147 transitions. [2021-10-06 20:57:45,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 20:57:45,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:57:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:45,445 INFO L225 Difference]: With dead ends: 938 [2021-10-06 20:57:45,445 INFO L226 Difference]: Without dead ends: 938 [2021-10-06 20:57:45,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:57:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-10-06 20:57:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 814. [2021-10-06 20:57:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 3.4944649446494465) internal successors, (2841), 813 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2841 transitions. [2021-10-06 20:57:45,477 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2841 transitions. Word has length 18 [2021-10-06 20:57:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:45,478 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 2841 transitions. [2021-10-06 20:57:45,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2841 transitions. [2021-10-06 20:57:45,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:57:45,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:45,482 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:45,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:45,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:45,695 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:45,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2069809065, now seen corresponding path program 10 times [2021-10-06 20:57:45,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:45,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396725492] [2021-10-06 20:57:45,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:45,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:45,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:45,698 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:45,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 20:57:45,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:45,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:45,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:57:45,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 20:57:46,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 20:57:46,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:46,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396725492] [2021-10-06 20:57:46,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396725492] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:46,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:46,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 20:57:46,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685999512] [2021-10-06 20:57:46,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:46,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:46,617 INFO L87 Difference]: Start difference. First operand 814 states and 2841 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:50,542 INFO L93 Difference]: Finished difference Result 1178 states and 3777 transitions. [2021-10-06 20:57:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 20:57:50,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:57:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:50,553 INFO L225 Difference]: With dead ends: 1178 [2021-10-06 20:57:50,553 INFO L226 Difference]: Without dead ends: 1174 [2021-10-06 20:57:50,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2727.9ms TimeCoverageRelationStatistics Valid=321, Invalid=869, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 20:57:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-10-06 20:57:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 908. [2021-10-06 20:57:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 3.4608599779492835) internal successors, (3139), 907 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 3139 transitions. [2021-10-06 20:57:50,592 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 3139 transitions. Word has length 18 [2021-10-06 20:57:50,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:50,592 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 3139 transitions. [2021-10-06 20:57:50,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 3139 transitions. [2021-10-06 20:57:50,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:57:50,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:50,596 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:50,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:50,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:50,810 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:50,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1509156621, now seen corresponding path program 11 times [2021-10-06 20:57:50,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:50,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255250176] [2021-10-06 20:57:50,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:50,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:50,814 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:50,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 20:57:51,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 20:57:51,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:51,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:57:51,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 20:57:51,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 20:57:51,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:51,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255250176] [2021-10-06 20:57:51,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255250176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:51,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:51,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 20:57:51,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918480993] [2021-10-06 20:57:51,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:51,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:51,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:51,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:51,952 INFO L87 Difference]: Start difference. First operand 908 states and 3139 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:54,955 INFO L93 Difference]: Finished difference Result 1390 states and 4361 transitions. [2021-10-06 20:57:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 20:57:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:57:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:54,966 INFO L225 Difference]: With dead ends: 1390 [2021-10-06 20:57:54,966 INFO L226 Difference]: Without dead ends: 1386 [2021-10-06 20:57:54,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2742.5ms TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2021-10-06 20:57:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-10-06 20:57:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 948. [2021-10-06 20:57:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 947 states have (on average 3.4593453009503694) internal successors, (3276), 947 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 3276 transitions. [2021-10-06 20:57:55,016 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 3276 transitions. Word has length 18 [2021-10-06 20:57:55,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:55,016 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 3276 transitions. [2021-10-06 20:57:55,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,017 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 3276 transitions. [2021-10-06 20:57:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:57:55,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:55,021 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:55,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:55,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:55,234 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2085807442, now seen corresponding path program 12 times [2021-10-06 20:57:55,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:55,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647423889] [2021-10-06 20:57:55,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:55,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:55,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:55,238 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:55,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 20:57:55,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 20:57:55,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 20:57:55,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:55,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:56,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:56,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647423889] [2021-10-06 20:57:56,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647423889] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:56,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:56,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-06 20:57:56,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090299773] [2021-10-06 20:57:56,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 20:57:56,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 20:57:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:57:56,641 INFO L87 Difference]: Start difference. First operand 948 states and 3276 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:03,080 INFO L93 Difference]: Finished difference Result 1454 states and 4776 transitions. [2021-10-06 20:58:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 20:58:03,081 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:58:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:03,090 INFO L225 Difference]: With dead ends: 1454 [2021-10-06 20:58:03,091 INFO L226 Difference]: Without dead ends: 1432 [2021-10-06 20:58:03,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 5789.7ms TimeCoverageRelationStatistics Valid=570, Invalid=1980, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 20:58:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-10-06 20:58:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1176. [2021-10-06 20:58:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 3.508936170212766) internal successors, (4123), 1175 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 4123 transitions. [2021-10-06 20:58:03,146 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 4123 transitions. Word has length 18 [2021-10-06 20:58:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:03,146 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 4123 transitions. [2021-10-06 20:58:03,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 4123 transitions. [2021-10-06 20:58:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:58:03,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:03,151 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:03,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:03,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:03,364 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:03,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:03,365 INFO L82 PathProgramCache]: Analyzing trace with hash 520380247, now seen corresponding path program 13 times [2021-10-06 20:58:03,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:03,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878460900] [2021-10-06 20:58:03,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:03,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:03,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:03,368 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:03,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 20:58:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:03,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:58:03,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 20:58:03,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 20:58:04,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:04,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878460900] [2021-10-06 20:58:04,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878460900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:04,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:04,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 20:58:04,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815571702] [2021-10-06 20:58:04,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:04,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:04,344 INFO L87 Difference]: Start difference. First operand 1176 states and 4123 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:06,264 INFO L93 Difference]: Finished difference Result 1770 states and 5750 transitions. [2021-10-06 20:58:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 20:58:06,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:58:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:06,276 INFO L225 Difference]: With dead ends: 1770 [2021-10-06 20:58:06,276 INFO L226 Difference]: Without dead ends: 1770 [2021-10-06 20:58:06,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1691.1ms TimeCoverageRelationStatistics Valid=231, Invalid=525, Unknown=0, NotChecked=0, Total=756 [2021-10-06 20:58:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-10-06 20:58:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1386. [2021-10-06 20:58:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.5061371841155236) internal successors, (4856), 1385 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4856 transitions. [2021-10-06 20:58:06,341 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4856 transitions. Word has length 18 [2021-10-06 20:58:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:06,342 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 4856 transitions. [2021-10-06 20:58:06,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4856 transitions. [2021-10-06 20:58:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:58:06,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:06,347 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:06,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:06,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:06,560 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:06,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2052639457, now seen corresponding path program 5 times [2021-10-06 20:58:06,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:06,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015233526] [2021-10-06 20:58:06,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:06,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:06,564 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:06,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 20:58:06,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:58:06,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:06,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 20:58:06,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:07,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:07,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:07,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015233526] [2021-10-06 20:58:07,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015233526] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:07,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:07,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 20:58:07,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572481461] [2021-10-06 20:58:07,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:07,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:07,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:07,795 INFO L87 Difference]: Start difference. First operand 1386 states and 4856 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:09,915 INFO L93 Difference]: Finished difference Result 1916 states and 6609 transitions. [2021-10-06 20:58:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 20:58:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:58:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:09,932 INFO L225 Difference]: With dead ends: 1916 [2021-10-06 20:58:09,932 INFO L226 Difference]: Without dead ends: 1902 [2021-10-06 20:58:09,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1484.2ms TimeCoverageRelationStatistics Valid=243, Invalid=513, Unknown=0, NotChecked=0, Total=756 [2021-10-06 20:58:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2021-10-06 20:58:09,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1682. [2021-10-06 20:58:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1681 states have (on average 3.5919095776323617) internal successors, (6038), 1681 states have internal predecessors, (6038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 6038 transitions. [2021-10-06 20:58:09,993 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 6038 transitions. Word has length 18 [2021-10-06 20:58:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:09,994 INFO L470 AbstractCegarLoop]: Abstraction has 1682 states and 6038 transitions. [2021-10-06 20:58:09,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 6038 transitions. [2021-10-06 20:58:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:58:09,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:09,999 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:10,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:10,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:10,213 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash -318714751, now seen corresponding path program 6 times [2021-10-06 20:58:10,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:10,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581573501] [2021-10-06 20:58:10,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:10,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:10,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:10,216 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:10,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 20:58:10,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 20:58:10,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:58:10,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:10,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:11,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:11,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581573501] [2021-10-06 20:58:11,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581573501] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:11,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:11,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 20:58:11,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902471959] [2021-10-06 20:58:11,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:11,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:11,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:11,014 INFO L87 Difference]: Start difference. First operand 1682 states and 6038 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:15,067 INFO L93 Difference]: Finished difference Result 3026 states and 10082 transitions. [2021-10-06 20:58:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 20:58:15,068 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:58:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:15,081 INFO L225 Difference]: With dead ends: 3026 [2021-10-06 20:58:15,081 INFO L226 Difference]: Without dead ends: 3026 [2021-10-06 20:58:15,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 2344.0ms TimeCoverageRelationStatistics Valid=420, Invalid=1386, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 20:58:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-10-06 20:58:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2122. [2021-10-06 20:58:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 3.6812824139556812) internal successors, (7808), 2121 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 7808 transitions. [2021-10-06 20:58:15,159 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 7808 transitions. Word has length 18 [2021-10-06 20:58:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:15,159 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 7808 transitions. [2021-10-06 20:58:15,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 7808 transitions. [2021-10-06 20:58:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 20:58:15,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:15,166 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:15,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:15,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:15,380 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1873264023, now seen corresponding path program 14 times [2021-10-06 20:58:15,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:15,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780552916] [2021-10-06 20:58:15,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:15,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:15,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:15,383 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:15,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 20:58:15,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:15,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:15,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:15,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:15,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 20:58:15,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:15,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780552916] [2021-10-06 20:58:15,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780552916] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:15,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:15,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-10-06 20:58:15,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946159776] [2021-10-06 20:58:15,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:58:15,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:58:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:58:15,930 INFO L87 Difference]: Start difference. First operand 2122 states and 7808 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:16,086 INFO L93 Difference]: Finished difference Result 2182 states and 7656 transitions. [2021-10-06 20:58:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:58:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 20:58:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:16,097 INFO L225 Difference]: With dead ends: 2182 [2021-10-06 20:58:16,097 INFO L226 Difference]: Without dead ends: 2148 [2021-10-06 20:58:16,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:58:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2021-10-06 20:58:16,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1922. [2021-10-06 20:58:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 3.5096304008328993) internal successors, (6742), 1921 states have internal predecessors, (6742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 6742 transitions. [2021-10-06 20:58:16,159 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 6742 transitions. Word has length 18 [2021-10-06 20:58:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:16,160 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 6742 transitions. [2021-10-06 20:58:16,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 6742 transitions. [2021-10-06 20:58:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 20:58:16,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:16,166 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:16,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:16,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:16,379 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:16,380 INFO L82 PathProgramCache]: Analyzing trace with hash 261326059, now seen corresponding path program 15 times [2021-10-06 20:58:16,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:16,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785101424] [2021-10-06 20:58:16,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:16,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:16,383 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:16,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 20:58:16,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 20:58:16,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:16,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:16,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:17,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:17,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:17,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785101424] [2021-10-06 20:58:17,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785101424] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:17,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:17,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-06 20:58:17,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542795205] [2021-10-06 20:58:17,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 20:58:17,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:17,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 20:58:17,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:58:17,598 INFO L87 Difference]: Start difference. First operand 1922 states and 6742 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:20,822 INFO L93 Difference]: Finished difference Result 3039 states and 10152 transitions. [2021-10-06 20:58:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 20:58:20,822 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 20:58:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:20,835 INFO L225 Difference]: With dead ends: 3039 [2021-10-06 20:58:20,835 INFO L226 Difference]: Without dead ends: 3024 [2021-10-06 20:58:20,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2695.3ms TimeCoverageRelationStatistics Valid=303, Invalid=1503, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 20:58:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2021-10-06 20:58:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 2612. [2021-10-06 20:58:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2611 states have (on average 3.5450019149751055) internal successors, (9256), 2611 states have internal predecessors, (9256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 9256 transitions. [2021-10-06 20:58:20,942 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 9256 transitions. Word has length 19 [2021-10-06 20:58:20,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:20,942 INFO L470 AbstractCegarLoop]: Abstraction has 2612 states and 9256 transitions. [2021-10-06 20:58:20,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 9256 transitions. [2021-10-06 20:58:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 20:58:20,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:20,950 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:20,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:21,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:21,165 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash 8734287, now seen corresponding path program 16 times [2021-10-06 20:58:21,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:21,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545863078] [2021-10-06 20:58:21,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:21,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:21,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:21,169 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:21,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 20:58:21,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:21,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:21,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:21,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:21,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:22,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:22,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545863078] [2021-10-06 20:58:22,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545863078] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:22,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:22,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:22,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356550021] [2021-10-06 20:58:22,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:22,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:22,238 INFO L87 Difference]: Start difference. First operand 2612 states and 9256 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:23,438 INFO L93 Difference]: Finished difference Result 3233 states and 11081 transitions. [2021-10-06 20:58:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 20:58:23,439 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 20:58:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:23,452 INFO L225 Difference]: With dead ends: 3233 [2021-10-06 20:58:23,452 INFO L226 Difference]: Without dead ends: 3206 [2021-10-06 20:58:23,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1041.4ms TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-10-06 20:58:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-10-06 20:58:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2842. [2021-10-06 20:58:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2841 states have (on average 3.576557550158395) internal successors, (10161), 2841 states have internal predecessors, (10161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 10161 transitions. [2021-10-06 20:58:23,554 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 10161 transitions. Word has length 19 [2021-10-06 20:58:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:23,554 INFO L470 AbstractCegarLoop]: Abstraction has 2842 states and 10161 transitions. [2021-10-06 20:58:23,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 10161 transitions. [2021-10-06 20:58:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 20:58:23,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:23,563 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:23,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:23,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:23,776 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1813570581, now seen corresponding path program 17 times [2021-10-06 20:58:23,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:23,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445735437] [2021-10-06 20:58:23,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:23,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:23,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:23,779 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:58:23,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 20:58:24,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 20:58:24,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:24,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:24,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:24,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:24,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:24,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445735437] [2021-10-06 20:58:24,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-06 20:58:24,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [489369823] [2021-10-06 20:58:24,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:24,843 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-06 20:58:24,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-06 20:58:24,846 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-06 20:58:24,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-10-06 20:58:25,698 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 20:58:25,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:25,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:25,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:25,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:26,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-06 20:58:26,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155039235] [2021-10-06 20:58:26,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:26,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 20:58:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:58:26,108 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 20:58:26,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-06 20:58:26,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 20:58:26,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:26,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:26,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:26,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:27,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-06 20:58:27,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:27,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-06 20:58:27,093 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-06 20:58:27,093 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-06 20:58:27,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:58:27,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 20:58:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 20:58:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 20:58:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 20:58:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 20:58:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 20:58:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 20:58:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 20:58:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:58:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 20:58:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 20:58:27,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:27,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-06 20:58:27,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:27,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:58:27,714 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 20:58:27,714 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 20:58:27,715 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-06 20:58:27,719 INFO L168 Benchmark]: Toolchain (without parser) took 90837.25 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 127.8 MB in the beginning and 132.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 121.2 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:27,719 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 20:58:27,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.96 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 116.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:27,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:27,720 INFO L168 Benchmark]: Boogie Preprocessor took 33.66 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 113.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:27,722 INFO L168 Benchmark]: RCFGBuilder took 633.26 ms. Allocated memory is still 153.1 MB. Free memory was 113.8 MB in the beginning and 133.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:27,722 INFO L168 Benchmark]: TraceAbstraction took 89806.52 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 133.1 MB in the beginning and 132.1 MB in the end (delta: 970.1 kB). Peak memory consumption was 125.8 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:27,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 300.96 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 116.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.66 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 113.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 633.26 ms. Allocated memory is still 153.1 MB. Free memory was 113.8 MB in the beginning and 133.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 89806.52 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 133.1 MB in the beginning and 132.1 MB in the end (delta: 970.1 kB). Peak memory consumption was 125.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9747.4ms, 113 PlacesBefore, 31 PlacesAfterwards, 115 TransitionsBefore, 27 TransitionsAfterwards, 972 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 118 TotalNumberOfCompositions, 985 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 985, positive: 985, positive conditional: 0, positive unconditional: 985, 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: 612, positive: 612, positive conditional: 0, positive unconditional: 612, 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: 612, positive: 612, positive conditional: 0, positive unconditional: 612, 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: 985, positive: 373, positive conditional: 0, positive unconditional: 373, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-06 20:58:27,760 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...