/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:48:16,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:48:16,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:48:16,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:48:16,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:48:16,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:48:16,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:48:16,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:48:16,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:48:16,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:48:16,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:48:16,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:48:16,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:48:16,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:48:16,269 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:48:16,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:48:16,270 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:48:16,270 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:48:16,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:48:16,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:48:16,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:48:16,271 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:48:16,272 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:48:16,272 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:48:16,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:48:16,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:48:16,273 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:48:16,273 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:48:16,273 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:48:16,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:48:16,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:48:16,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:48:16,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:48:16,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:16,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:48:16,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:48:16,275 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:48:16,275 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:48:16,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:48:16,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:48:16,276 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:48:16,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:48:16,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:48:16,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:48:16,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:48:16,736 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:48:16,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2021-10-07 15:48:16,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/322af6f89/e33674e1ad334015b4bb2603fc13d14b/FLAGa9cfc3c7d [2021-10-07 15:48:17,523 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:48:17,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2021-10-07 15:48:17,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/322af6f89/e33674e1ad334015b4bb2603fc13d14b/FLAGa9cfc3c7d [2021-10-07 15:48:17,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/322af6f89/e33674e1ad334015b4bb2603fc13d14b [2021-10-07 15:48:17,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:48:17,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:48:17,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:17,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:48:17,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:48:17,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:17" (1/1) ... [2021-10-07 15:48:17,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca7a717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:17, skipping insertion in model container [2021-10-07 15:48:17,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:17" (1/1) ... [2021-10-07 15:48:17,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:48:17,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:48:18,088 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2419,2432] [2021-10-07 15:48:18,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:18,115 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:48:18,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2419,2432] [2021-10-07 15:48:18,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:18,202 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:48:18,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18 WrapperNode [2021-10-07 15:48:18,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:18,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:18,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:48:18,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:48:18,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:18,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:48:18,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:48:18,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:48:18,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:48:18,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:48:18,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:48:18,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:48:18,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (1/1) ... [2021-10-07 15:48:18,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:48:18,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:48:18,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:48:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:48:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:48:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:48:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:48:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:48:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:48:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:48:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:48:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:48:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:48:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:48:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:48:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:48:18,401 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:48:18,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:48:18,838 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 15:48:18,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:18 BoogieIcfgContainer [2021-10-07 15:48:18,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:48:18,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:48:18,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:48:18,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:48:18,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:48:17" (1/3) ... [2021-10-07 15:48:18,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:18, skipping insertion in model container [2021-10-07 15:48:18,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:18" (2/3) ... [2021-10-07 15:48:18,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:18, skipping insertion in model container [2021-10-07 15:48:18,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:18" (3/3) ... [2021-10-07 15:48:18,879 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2021-10-07 15:48:18,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:48:18,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 15:48:18,887 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:48:18,928 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,929 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,930 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,930 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,930 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,930 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,931 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,931 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,931 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,931 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,932 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,932 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,932 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,933 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,933 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,933 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,934 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,934 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,934 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,934 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,935 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,935 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,942 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,943 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,943 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:18,950 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:48:19,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:48:19,015 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:48:19,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 15:48:19,048 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:48:19,065 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 108 transitions, 232 flow [2021-10-07 15:48:19,075 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 108 transitions, 232 flow [2021-10-07 15:48:19,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 232 flow [2021-10-07 15:48:19,173 INFO L129 PetriNetUnfolder]: 8/106 cut-off events. [2021-10-07 15:48:19,174 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:48:19,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 8/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2021-10-07 15:48:19,188 INFO L116 LiptonReduction]: Number of co-enabled transitions 936 [2021-10-07 15:48:28,596 INFO L131 LiptonReduction]: Checked pairs total: 1109 [2021-10-07 15:48:28,596 INFO L133 LiptonReduction]: Total number of compositions: 120 [2021-10-07 15:48:28,607 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-07 15:48:28,618 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:48:28,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:28,625 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:48:28,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash 434, now seen corresponding path program 1 times [2021-10-07 15:48:28,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:28,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729586870] [2021-10-07 15:48:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:28,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:28,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:28,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:28,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:48:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:28,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:48:28,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:28,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:28,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:28,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729586870] [2021-10-07 15:48:28,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729586870] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:28,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:28,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:48:28,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701524451] [2021-10-07 15:48:28,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:48:28,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:48:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:48:28,746 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:28,761 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2021-10-07 15:48:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:48:28,762 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 15:48:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:28,771 INFO L225 Difference]: With dead ends: 36 [2021-10-07 15:48:28,771 INFO L226 Difference]: Without dead ends: 36 [2021-10-07 15:48:28,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:48:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-07 15:48:28,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-07 15:48:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2021-10-07 15:48:28,806 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2021-10-07 15:48:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:28,806 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2021-10-07 15:48:28,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2021-10-07 15:48:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:48:28,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:28,808 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:48:28,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:29,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,019 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:29,020 INFO L82 PathProgramCache]: Analyzing trace with hash 428084, now seen corresponding path program 1 times [2021-10-07 15:48:29,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:29,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522255534] [2021-10-07 15:48:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:29,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:29,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:29,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:48:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:29,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:29,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:29,243 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 15:48:29,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 15:48:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:29,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:29,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:29,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522255534] [2021-10-07 15:48:29,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522255534] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:29,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:29,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:29,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626837505] [2021-10-07 15:48:29,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:29,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:29,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:29,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:29,300 INFO L87 Difference]: Start difference. First operand 36 states and 80 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) [2021-10-07 15:48:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:29,328 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2021-10-07 15:48:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:29,329 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 [2021-10-07 15:48:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:29,330 INFO L225 Difference]: With dead ends: 32 [2021-10-07 15:48:29,330 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 15:48:29,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 15:48:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 15:48:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2021-10-07 15:48:29,338 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2021-10-07 15:48:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:29,339 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2021-10-07 15:48:29,339 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) [2021-10-07 15:48:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2021-10-07 15:48:29,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:48:29,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:29,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:48:29,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-07 15:48:29,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:29,554 INFO L82 PathProgramCache]: Analyzing trace with hash 428085, now seen corresponding path program 1 times [2021-10-07 15:48:29,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:29,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988755835] [2021-10-07 15:48:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:29,555 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:29,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:29,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:48:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:29,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:29,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:29,705 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 15:48:29,706 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 [2021-10-07 15:48:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:29,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:29,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:29,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988755835] [2021-10-07 15:48:29,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988755835] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:29,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:29,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:29,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189164912] [2021-10-07 15:48:29,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:29,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:29,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:29,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:29,852 INFO L87 Difference]: Start difference. First operand 32 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:29,877 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2021-10-07 15:48:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:48:29,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:29,879 INFO L225 Difference]: With dead ends: 28 [2021-10-07 15:48:29,880 INFO L226 Difference]: Without dead ends: 28 [2021-10-07 15:48:29,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:29,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-07 15:48:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-07 15:48:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2021-10-07 15:48:29,887 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2021-10-07 15:48:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:29,887 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2021-10-07 15:48:29,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2021-10-07 15:48:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:48:29,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:29,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:48:29,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:30,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:30,096 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash 411396897, now seen corresponding path program 1 times [2021-10-07 15:48:30,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:30,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122274423] [2021-10-07 15:48:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:30,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:30,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:30,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:30,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:48:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:30,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:30,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:30,183 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 15:48:30,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 15:48:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:30,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:30,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:30,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122274423] [2021-10-07 15:48:30,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122274423] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:30,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:30,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:30,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809912569] [2021-10-07 15:48:30,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:30,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:30,240 INFO L87 Difference]: Start difference. First operand 28 states and 64 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:30,258 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2021-10-07 15:48:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:30,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:48:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:30,260 INFO L225 Difference]: With dead ends: 24 [2021-10-07 15:48:30,260 INFO L226 Difference]: Without dead ends: 24 [2021-10-07 15:48:30,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-07 15:48:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-07 15:48:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2021-10-07 15:48:30,266 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2021-10-07 15:48:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:30,266 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2021-10-07 15:48:30,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2021-10-07 15:48:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:48:30,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:30,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:48:30,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:30,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:30,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash 411396899, now seen corresponding path program 1 times [2021-10-07 15:48:30,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:30,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256382386] [2021-10-07 15:48:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:30,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:30,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:30,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:30,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:48:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:30,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:30,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:30,665 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 15:48:30,665 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 [2021-10-07 15:48:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:30,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:30,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:30,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256382386] [2021-10-07 15:48:30,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256382386] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:30,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:30,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:30,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489851219] [2021-10-07 15:48:30,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:30,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:30,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:30,879 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:30,907 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2021-10-07 15:48:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:30,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:48:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:30,910 INFO L225 Difference]: With dead ends: 20 [2021-10-07 15:48:30,911 INFO L226 Difference]: Without dead ends: 20 [2021-10-07 15:48:30,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-07 15:48:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-07 15:48:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2021-10-07 15:48:30,920 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2021-10-07 15:48:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:30,920 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2021-10-07 15:48:30,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2021-10-07 15:48:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:48:30,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:30,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:30,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:31,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:31,125 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)] === [2021-10-07 15:48:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:31,126 INFO L82 PathProgramCache]: Analyzing trace with hash -543505712, now seen corresponding path program 1 times [2021-10-07 15:48:31,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:31,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869370621] [2021-10-07 15:48:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:31,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:31,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:31,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:48:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:31,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:48:31,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:31,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869370621] [2021-10-07 15:48:31,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869370621] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:31,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:31,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:31,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575927220] [2021-10-07 15:48:31,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:31,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:31,318 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:31,343 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2021-10-07 15:48:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:31,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:48:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:31,346 INFO L225 Difference]: With dead ends: 37 [2021-10-07 15:48:31,346 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 15:48:31,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 15:48:31,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 15:48:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2021-10-07 15:48:31,353 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2021-10-07 15:48:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:31,353 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2021-10-07 15:48:31,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2021-10-07 15:48:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:48:31,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:31,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:31,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:31,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:31,562 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)] === [2021-10-07 15:48:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash 786148917, now seen corresponding path program 1 times [2021-10-07 15:48:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:31,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306858591] [2021-10-07 15:48:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:31,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:31,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:31,565 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:31,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:48:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:31,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:48:31,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:31,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306858591] [2021-10-07 15:48:31,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306858591] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:31,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:31,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:48:31,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562387755] [2021-10-07 15:48:31,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:31,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:31,886 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:32,283 INFO L93 Difference]: Finished difference Result 50 states and 95 transitions. [2021-10-07 15:48:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:32,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2021-10-07 15:48:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:32,285 INFO L225 Difference]: With dead ends: 50 [2021-10-07 15:48:32,285 INFO L226 Difference]: Without dead ends: 42 [2021-10-07 15:48:32,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:48:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-07 15:48:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-10-07 15:48:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-07 15:48:32,291 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 12 [2021-10-07 15:48:32,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:32,292 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-07 15:48:32,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-07 15:48:32,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:48:32,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:32,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:32,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:32,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:32,494 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)] === [2021-10-07 15:48:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash -688564236, now seen corresponding path program 1 times [2021-10-07 15:48:32,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:32,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280563401] [2021-10-07 15:48:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:32,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:32,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:32,498 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:32,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:48:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:32,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:48:32,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:32,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:32,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:32,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280563401] [2021-10-07 15:48:32,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280563401] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:32,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:32,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:48:32,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296432583] [2021-10-07 15:48:32,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:32,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:32,847 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:33,114 INFO L93 Difference]: Finished difference Result 58 states and 125 transitions. [2021-10-07 15:48:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:33,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:48:33,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:33,116 INFO L225 Difference]: With dead ends: 58 [2021-10-07 15:48:33,116 INFO L226 Difference]: Without dead ends: 58 [2021-10-07 15:48:33,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:48:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-07 15:48:33,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2021-10-07 15:48:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 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) [2021-10-07 15:48:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 107 transitions. [2021-10-07 15:48:33,122 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 107 transitions. Word has length 12 [2021-10-07 15:48:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:33,123 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 107 transitions. [2021-10-07 15:48:33,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,123 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 107 transitions. [2021-10-07 15:48:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:48:33,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:33,124 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:33,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:33,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:33,325 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)] === [2021-10-07 15:48:33,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:33,327 INFO L82 PathProgramCache]: Analyzing trace with hash -890411184, now seen corresponding path program 2 times [2021-10-07 15:48:33,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:33,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3839616] [2021-10-07 15:48:33,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:33,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:33,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:33,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:48:33,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:33,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:33,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:33,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:33,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:34,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:34,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3839616] [2021-10-07 15:48:34,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3839616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:34,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:34,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:48:34,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45247050] [2021-10-07 15:48:34,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:48:34,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:48:34,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:48:34,808 INFO L87 Difference]: Start difference. First operand 46 states and 107 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:34,950 INFO L93 Difference]: Finished difference Result 89 states and 208 transitions. [2021-10-07 15:48:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:34,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2021-10-07 15:48:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:34,952 INFO L225 Difference]: With dead ends: 89 [2021-10-07 15:48:34,952 INFO L226 Difference]: Without dead ends: 84 [2021-10-07 15:48:34,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 763.0ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:48:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-07 15:48:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-10-07 15:48:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.4657534246575343) internal successors, (180), 73 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 180 transitions. [2021-10-07 15:48:34,961 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 180 transitions. Word has length 13 [2021-10-07 15:48:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:34,961 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 180 transitions. [2021-10-07 15:48:34,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 180 transitions. [2021-10-07 15:48:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:48:34,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:34,963 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:34,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:35,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:35,176 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)] === [2021-10-07 15:48:35,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:35,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1377986123, now seen corresponding path program 1 times [2021-10-07 15:48:35,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:35,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202341707] [2021-10-07 15:48:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:35,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:35,180 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:35,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:48:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:35,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:48:35,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:35,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:35,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:35,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202341707] [2021-10-07 15:48:35,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202341707] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:35,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:35,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:48:35,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359302712] [2021-10-07 15:48:35,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:35,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:35,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:35,640 INFO L87 Difference]: Start difference. First operand 74 states and 180 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-10-07 15:48:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:36,065 INFO L93 Difference]: Finished difference Result 126 states and 306 transitions. [2021-10-07 15:48:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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 14 [2021-10-07 15:48:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:36,068 INFO L225 Difference]: With dead ends: 126 [2021-10-07 15:48:36,068 INFO L226 Difference]: Without dead ends: 126 [2021-10-07 15:48:36,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 87.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:48:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-07 15:48:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 100. [2021-10-07 15:48:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.6262626262626263) internal successors, (260), 99 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 260 transitions. [2021-10-07 15:48:36,078 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 260 transitions. Word has length 14 [2021-10-07 15:48:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:36,079 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 260 transitions. [2021-10-07 15:48:36,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-10-07 15:48:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 260 transitions. [2021-10-07 15:48:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:48:36,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:36,081 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:36,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:36,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:36,293 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)] === [2021-10-07 15:48:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:36,295 INFO L82 PathProgramCache]: Analyzing trace with hash 687059952, now seen corresponding path program 2 times [2021-10-07 15:48:36,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:36,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584254465] [2021-10-07 15:48:36,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:36,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:36,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:36,297 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:36,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:48:36,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:36,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:36,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:48:36,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:36,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:39,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:39,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584254465] [2021-10-07 15:48:39,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584254465] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:39,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:39,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:39,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712725646] [2021-10-07 15:48:39,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:48:39,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:48:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:48:39,842 INFO L87 Difference]: Start difference. First operand 100 states and 260 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 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) [2021-10-07 15:48:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:41,341 INFO L93 Difference]: Finished difference Result 221 states and 577 transitions. [2021-10-07 15:48:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:48:41,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 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 15 [2021-10-07 15:48:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:41,344 INFO L225 Difference]: With dead ends: 221 [2021-10-07 15:48:41,344 INFO L226 Difference]: Without dead ends: 216 [2021-10-07 15:48:41,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2979.9ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:48:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-07 15:48:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 172. [2021-10-07 15:48:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.818713450292398) internal successors, (482), 171 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 482 transitions. [2021-10-07 15:48:41,360 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 482 transitions. Word has length 15 [2021-10-07 15:48:41,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:41,361 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 482 transitions. [2021-10-07 15:48:41,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 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) [2021-10-07 15:48:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 482 transitions. [2021-10-07 15:48:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:48:41,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:41,363 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:41,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:41,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:41,576 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)] === [2021-10-07 15:48:41,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:41,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1977083562, now seen corresponding path program 3 times [2021-10-07 15:48:41,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:41,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560228057] [2021-10-07 15:48:41,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:48:41,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:41,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:41,580 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:41,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:48:41,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:48:41,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:41,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:48:41,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:42,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:44,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:44,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560228057] [2021-10-07 15:48:44,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560228057] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:44,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:44,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:44,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821687252] [2021-10-07 15:48:44,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:48:44,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:48:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:48:44,275 INFO L87 Difference]: Start difference. First operand 172 states and 482 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 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) [2021-10-07 15:48:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:45,440 INFO L93 Difference]: Finished difference Result 271 states and 750 transitions. [2021-10-07 15:48:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:48:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 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 15 [2021-10-07 15:48:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:45,444 INFO L225 Difference]: With dead ends: 271 [2021-10-07 15:48:45,445 INFO L226 Difference]: Without dead ends: 266 [2021-10-07 15:48:45,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1302.3ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-07 15:48:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 210. [2021-10-07 15:48:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.0191387559808613) internal successors, (631), 209 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 631 transitions. [2021-10-07 15:48:45,462 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 631 transitions. Word has length 15 [2021-10-07 15:48:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:45,463 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 631 transitions. [2021-10-07 15:48:45,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 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) [2021-10-07 15:48:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 631 transitions. [2021-10-07 15:48:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:48:45,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:45,466 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:45,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:45,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:45,680 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)] === [2021-10-07 15:48:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash -506112592, now seen corresponding path program 4 times [2021-10-07 15:48:45,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:45,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582522690] [2021-10-07 15:48:45,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:48:45,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:45,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:45,684 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:45,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:48:45,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:48:45,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:45,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:48:45,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:46,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:48,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:48,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582522690] [2021-10-07 15:48:48,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582522690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:48,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:48,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:48,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085709045] [2021-10-07 15:48:48,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:48:48,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:48:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:48:48,019 INFO L87 Difference]: Start difference. First operand 210 states and 631 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-10-07 15:48:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:49,058 INFO L93 Difference]: Finished difference Result 277 states and 820 transitions. [2021-10-07 15:48:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:48:49,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:48:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:49,062 INFO L225 Difference]: With dead ends: 277 [2021-10-07 15:48:49,062 INFO L226 Difference]: Without dead ends: 272 [2021-10-07 15:48:49,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1099.6ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-07 15:48:49,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 256. [2021-10-07 15:48:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.0313725490196077) internal successors, (773), 255 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 773 transitions. [2021-10-07 15:48:49,076 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 773 transitions. Word has length 15 [2021-10-07 15:48:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:49,076 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 773 transitions. [2021-10-07 15:48:49,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-10-07 15:48:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 773 transitions. [2021-10-07 15:48:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:48:49,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:49,079 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:49,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-07 15:48:49,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,301 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)] === [2021-10-07 15:48:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:49,302 INFO L82 PathProgramCache]: Analyzing trace with hash -413933716, now seen corresponding path program 5 times [2021-10-07 15:48:49,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:49,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884868205] [2021-10-07 15:48:49,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:48:49,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:49,304 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) [2021-10-07 15:48:49,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:48:49,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:48:49,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:49,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:48:49,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:50,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:51,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:51,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884868205] [2021-10-07 15:48:51,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884868205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:51,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:51,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:51,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029145242] [2021-10-07 15:48:51,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:48:51,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:48:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:48:51,526 INFO L87 Difference]: Start difference. First operand 256 states and 773 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-10-07 15:48:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:52,637 INFO L93 Difference]: Finished difference Result 347 states and 1070 transitions. [2021-10-07 15:48:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:48:52,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:48:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:52,641 INFO L225 Difference]: With dead ends: 347 [2021-10-07 15:48:52,641 INFO L226 Difference]: Without dead ends: 342 [2021-10-07 15:48:52,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1209.9ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:52,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-10-07 15:48:52,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 282. [2021-10-07 15:48:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 3.1530249110320283) internal successors, (886), 281 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 886 transitions. [2021-10-07 15:48:52,656 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 886 transitions. Word has length 15 [2021-10-07 15:48:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:52,657 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 886 transitions. [2021-10-07 15:48:52,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-10-07 15:48:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 886 transitions. [2021-10-07 15:48:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:48:52,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:52,659 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:52,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 15:48:52,871 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 [2021-10-07 15:48:52,872 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)] === [2021-10-07 15:48:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash 704427002, now seen corresponding path program 6 times [2021-10-07 15:48:52,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:52,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758418929] [2021-10-07 15:48:52,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:48:52,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:52,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:52,875 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) [2021-10-07 15:48:52,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:48:53,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:48:53,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:53,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:48:53,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:54,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:55,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:55,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758418929] [2021-10-07 15:48:55,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758418929] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:55,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:55,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:48:55,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999762640] [2021-10-07 15:48:55,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:48:55,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:48:55,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:48:55,678 INFO L87 Difference]: Start difference. First operand 282 states and 886 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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) [2021-10-07 15:48:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:57,815 INFO L93 Difference]: Finished difference Result 656 states and 1871 transitions. [2021-10-07 15:48:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:48:57,816 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:48:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:57,821 INFO L225 Difference]: With dead ends: 656 [2021-10-07 15:48:57,821 INFO L226 Difference]: Without dead ends: 656 [2021-10-07 15:48:57,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1872.0ms TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:48:57,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-10-07 15:48:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 388. [2021-10-07 15:48:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.2764857881136953) internal successors, (1268), 387 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1268 transitions. [2021-10-07 15:48:57,844 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1268 transitions. Word has length 16 [2021-10-07 15:48:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:57,845 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 1268 transitions. [2021-10-07 15:48:57,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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) [2021-10-07 15:48:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1268 transitions. [2021-10-07 15:48:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:48:57,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:57,847 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:57,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:58,062 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 [2021-10-07 15:48:58,063 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)] === [2021-10-07 15:48:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:58,064 INFO L82 PathProgramCache]: Analyzing trace with hash -2119569324, now seen corresponding path program 7 times [2021-10-07 15:48:58,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:58,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822324659] [2021-10-07 15:48:58,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:48:58,066 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:58,069 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) [2021-10-07 15:48:58,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:48:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:58,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:48:58,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:59,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:00,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:00,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822324659] [2021-10-07 15:49:00,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822324659] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:00,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:00,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:49:00,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360059003] [2021-10-07 15:49:00,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:00,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:00,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:00,437 INFO L87 Difference]: Start difference. First operand 388 states and 1268 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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) [2021-10-07 15:49:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:02,518 INFO L93 Difference]: Finished difference Result 680 states and 2022 transitions. [2021-10-07 15:49:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:49:02,519 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:49:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:02,525 INFO L225 Difference]: With dead ends: 680 [2021-10-07 15:49:02,525 INFO L226 Difference]: Without dead ends: 680 [2021-10-07 15:49:02,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1691.9ms TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:49:02,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-10-07 15:49:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 426. [2021-10-07 15:49:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.348235294117647) internal successors, (1423), 425 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1423 transitions. [2021-10-07 15:49:02,549 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1423 transitions. Word has length 16 [2021-10-07 15:49:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:02,550 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 1423 transitions. [2021-10-07 15:49:02,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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) [2021-10-07 15:49:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1423 transitions. [2021-10-07 15:49:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:49:02,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:02,552 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:02,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:02,770 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 [2021-10-07 15:49:02,771 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)] === [2021-10-07 15:49:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:02,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1374708908, now seen corresponding path program 8 times [2021-10-07 15:49:02,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:02,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752635057] [2021-10-07 15:49:02,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:02,773 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:02,774 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) [2021-10-07 15:49:02,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:49:03,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:03,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:03,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:49:03,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:04,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:05,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752635057] [2021-10-07 15:49:05,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752635057] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:05,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:05,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:49:05,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720223093] [2021-10-07 15:49:05,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:05,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:05,175 INFO L87 Difference]: Start difference. First operand 426 states and 1423 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:07,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:07,722 INFO L93 Difference]: Finished difference Result 562 states and 1788 transitions. [2021-10-07 15:49:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:49:07,724 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:49:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:07,729 INFO L225 Difference]: With dead ends: 562 [2021-10-07 15:49:07,729 INFO L226 Difference]: Without dead ends: 548 [2021-10-07 15:49:07,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2132.3ms TimeCoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:49:07,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-10-07 15:49:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 446. [2021-10-07 15:49:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.346067415730337) internal successors, (1489), 445 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1489 transitions. [2021-10-07 15:49:07,752 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1489 transitions. Word has length 16 [2021-10-07 15:49:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:07,752 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1489 transitions. [2021-10-07 15:49:07,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1489 transitions. [2021-10-07 15:49:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:49:07,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:07,754 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:07,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:07,968 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 [2021-10-07 15:49:07,968 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)] === [2021-10-07 15:49:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:07,969 INFO L82 PathProgramCache]: Analyzing trace with hash -508628366, now seen corresponding path program 9 times [2021-10-07 15:49:07,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:07,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873451540] [2021-10-07 15:49:07,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:49:07,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:07,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:07,971 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) [2021-10-07 15:49:08,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:49:08,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:49:08,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:08,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:49:08,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:10,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:10,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873451540] [2021-10-07 15:49:10,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873451540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:10,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:10,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:49:10,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943600161] [2021-10-07 15:49:10,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:10,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:10,566 INFO L87 Difference]: Start difference. First operand 446 states and 1489 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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) [2021-10-07 15:49:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:12,733 INFO L93 Difference]: Finished difference Result 810 states and 2482 transitions. [2021-10-07 15:49:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:49:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:49:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:12,740 INFO L225 Difference]: With dead ends: 810 [2021-10-07 15:49:12,740 INFO L226 Difference]: Without dead ends: 810 [2021-10-07 15:49:12,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1920.4ms TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:49:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-10-07 15:49:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 524. [2021-10-07 15:49:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.45697896749522) internal successors, (1808), 523 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:12,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1808 transitions. [2021-10-07 15:49:12,768 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1808 transitions. Word has length 16 [2021-10-07 15:49:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:12,769 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1808 transitions. [2021-10-07 15:49:12,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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) [2021-10-07 15:49:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1808 transitions. [2021-10-07 15:49:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:49:12,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:12,771 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:12,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:12,984 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 [2021-10-07 15:49:12,984 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)] === [2021-10-07 15:49:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:12,985 INFO L82 PathProgramCache]: Analyzing trace with hash 236232050, now seen corresponding path program 10 times [2021-10-07 15:49:12,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:12,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683542319] [2021-10-07 15:49:12,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:49:12,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:12,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:12,988 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) [2021-10-07 15:49:12,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:49:13,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:49:13,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:13,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:49:13,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:14,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:15,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:15,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683542319] [2021-10-07 15:49:15,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683542319] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:15,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:15,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:49:15,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378957759] [2021-10-07 15:49:15,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:15,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:15,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:15,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:15,339 INFO L87 Difference]: Start difference. First operand 524 states and 1808 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:17,760 INFO L93 Difference]: Finished difference Result 704 states and 2302 transitions. [2021-10-07 15:49:17,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:49:17,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:49:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:17,768 INFO L225 Difference]: With dead ends: 704 [2021-10-07 15:49:17,768 INFO L226 Difference]: Without dead ends: 694 [2021-10-07 15:49:17,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2041.9ms TimeCoverageRelationStatistics Valid=161, Invalid=301, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:49:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-07 15:49:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 554. [2021-10-07 15:49:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 3.481012658227848) internal successors, (1925), 553 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1925 transitions. [2021-10-07 15:49:17,796 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1925 transitions. Word has length 16 [2021-10-07 15:49:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:17,796 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1925 transitions. [2021-10-07 15:49:17,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1925 transitions. [2021-10-07 15:49:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:49:17,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:17,799 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:17,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:18,012 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 [2021-10-07 15:49:18,013 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)] === [2021-10-07 15:49:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1559049168, now seen corresponding path program 11 times [2021-10-07 15:49:18,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:18,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746683615] [2021-10-07 15:49:18,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:49:18,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:18,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:18,016 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) [2021-10-07 15:49:18,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:49:18,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:18,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:18,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:49:18,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:18,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:21,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:21,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746683615] [2021-10-07 15:49:21,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746683615] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:21,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:21,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:49:21,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249878899] [2021-10-07 15:49:21,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:49:21,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:49:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2021-10-07 15:49:21,696 INFO L87 Difference]: Start difference. First operand 554 states and 1925 transitions. Second operand has 10 states, 10 states have (on average 2.8) 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) [2021-10-07 15:49:29,958 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-07 15:49:36,131 WARN L207 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 21 [2021-10-07 15:49:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:36,458 INFO L93 Difference]: Finished difference Result 1388 states and 4567 transitions. [2021-10-07 15:49:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:49:36,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) 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 16 [2021-10-07 15:49:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:36,471 INFO L225 Difference]: With dead ends: 1388 [2021-10-07 15:49:36,471 INFO L226 Difference]: Without dead ends: 1382 [2021-10-07 15:49:36,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 16765.3ms TimeCoverageRelationStatistics Valid=64, Invalid=174, Unknown=2, NotChecked=0, Total=240 [2021-10-07 15:49:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-10-07 15:49:36,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1190. [2021-10-07 15:49:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 3.432296047098402) internal successors, (4081), 1189 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 4081 transitions. [2021-10-07 15:49:36,524 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 4081 transitions. Word has length 16 [2021-10-07 15:49:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:36,526 INFO L470 AbstractCegarLoop]: Abstraction has 1190 states and 4081 transitions. [2021-10-07 15:49:36,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) 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) [2021-10-07 15:49:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 4081 transitions. [2021-10-07 15:49:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:49:36,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:36,531 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:36,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:36,744 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 [2021-10-07 15:49:36,745 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)] === [2021-10-07 15:49:36,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:36,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1204110858, now seen corresponding path program 12 times [2021-10-07 15:49:36,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:36,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542606731] [2021-10-07 15:49:36,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:49:36,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:36,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:36,749 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) [2021-10-07 15:49:36,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:49:37,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:49:37,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:37,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:37,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:38,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:40,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:40,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542606731] [2021-10-07 15:49:40,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542606731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:40,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:40,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:49:40,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584065705] [2021-10-07 15:49:40,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:49:40,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:49:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:49:40,736 INFO L87 Difference]: Start difference. First operand 1190 states and 4081 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:43,731 INFO L93 Difference]: Finished difference Result 1337 states and 4340 transitions. [2021-10-07 15:49:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:49:43,733 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 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 17 [2021-10-07 15:49:43,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:43,743 INFO L225 Difference]: With dead ends: 1337 [2021-10-07 15:49:43,743 INFO L226 Difference]: Without dead ends: 1332 [2021-10-07 15:49:43,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3147.4ms TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:49:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-07 15:49:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1168. [2021-10-07 15:49:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 3.424164524421594) internal successors, (3996), 1167 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3996 transitions. [2021-10-07 15:49:43,789 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3996 transitions. Word has length 17 [2021-10-07 15:49:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:43,789 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 3996 transitions. [2021-10-07 15:49:43,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3996 transitions. [2021-10-07 15:49:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:49:43,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:43,794 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:43,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:44,007 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 [2021-10-07 15:49:44,008 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)] === [2021-10-07 15:49:44,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:44,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1283732084, now seen corresponding path program 13 times [2021-10-07 15:49:44,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:44,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071199351] [2021-10-07 15:49:44,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:49:44,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:44,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:44,011 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) [2021-10-07 15:49:44,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:49:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:44,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:49:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:45,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:47,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:47,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071199351] [2021-10-07 15:49:47,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071199351] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:47,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:47,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-07 15:49:47,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365065347] [2021-10-07 15:49:47,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:49:47,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:49:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:49:47,206 INFO L87 Difference]: Start difference. First operand 1168 states and 3996 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:56,412 INFO L93 Difference]: Finished difference Result 1554 states and 4917 transitions. [2021-10-07 15:49:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 15:49:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:49:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:56,424 INFO L225 Difference]: With dead ends: 1554 [2021-10-07 15:49:56,424 INFO L226 Difference]: Without dead ends: 1548 [2021-10-07 15:49:56,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 8423.7ms TimeCoverageRelationStatistics Valid=506, Invalid=1750, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:49:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-10-07 15:49:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1192. [2021-10-07 15:49:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1191 states have (on average 3.413937867338371) internal successors, (4066), 1191 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4066 transitions. [2021-10-07 15:49:56,475 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4066 transitions. Word has length 17 [2021-10-07 15:49:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:56,476 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 4066 transitions. [2021-10-07 15:49:56,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4066 transitions. [2021-10-07 15:49:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:49:56,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:56,481 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:56,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:56,695 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 [2021-10-07 15:49:56,696 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)] === [2021-10-07 15:49:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:56,697 INFO L82 PathProgramCache]: Analyzing trace with hash 630819408, now seen corresponding path program 14 times [2021-10-07 15:49:56,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:56,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682717711] [2021-10-07 15:49:56,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:56,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:56,700 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) [2021-10-07 15:49:56,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:49:57,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:57,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:57,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:57,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:58,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:00,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:00,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682717711] [2021-10-07 15:50:00,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682717711] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:00,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:00,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:50:00,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493003796] [2021-10-07 15:50:00,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:50:00,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:50:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:50:00,268 INFO L87 Difference]: Start difference. First operand 1192 states and 4066 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:03,127 INFO L93 Difference]: Finished difference Result 1563 states and 5236 transitions. [2021-10-07 15:50:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:50:03,128 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:50:03,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:03,139 INFO L225 Difference]: With dead ends: 1563 [2021-10-07 15:50:03,139 INFO L226 Difference]: Without dead ends: 1558 [2021-10-07 15:50:03,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2912.7ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:50:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-10-07 15:50:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1420. [2021-10-07 15:50:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.4834390415785763) internal successors, (4943), 1419 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 4943 transitions. [2021-10-07 15:50:03,195 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 4943 transitions. Word has length 17 [2021-10-07 15:50:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:03,195 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 4943 transitions. [2021-10-07 15:50:03,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 4943 transitions. [2021-10-07 15:50:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:50:03,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:03,201 INFO L512 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:03,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:03,415 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 [2021-10-07 15:50:03,416 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)] === [2021-10-07 15:50:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash -810561419, now seen corresponding path program 15 times [2021-10-07 15:50:03,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:03,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658221604] [2021-10-07 15:50:03,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:50:03,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:03,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:03,420 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) [2021-10-07 15:50:03,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:50:03,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:50:03,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:03,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:50:03,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:50:04,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:06,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:06,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658221604] [2021-10-07 15:50:06,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658221604] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:06,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:06,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-07 15:50:06,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499499329] [2021-10-07 15:50:06,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:50:06,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:50:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:50:06,898 INFO L87 Difference]: Start difference. First operand 1420 states and 4943 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:11,382 INFO L93 Difference]: Finished difference Result 1782 states and 5898 transitions. [2021-10-07 15:50:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:50:11,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:50:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:11,393 INFO L225 Difference]: With dead ends: 1782 [2021-10-07 15:50:11,393 INFO L226 Difference]: Without dead ends: 1742 [2021-10-07 15:50:11,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4166.8ms TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:50:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-10-07 15:50:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1504. [2021-10-07 15:50:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.453759148369927) internal successors, (5191), 1503 states have internal predecessors, (5191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5191 transitions. [2021-10-07 15:50:11,452 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5191 transitions. Word has length 18 [2021-10-07 15:50:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:11,452 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 5191 transitions. [2021-10-07 15:50:11,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5191 transitions. [2021-10-07 15:50:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:50:11,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:11,458 INFO L512 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:11,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-07 15:50:11,674 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 [2021-10-07 15:50:11,675 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)] === [2021-10-07 15:50:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:11,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1089171, now seen corresponding path program 16 times [2021-10-07 15:50:11,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:11,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893115775] [2021-10-07 15:50:11,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:50:11,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:11,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:11,677 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) [2021-10-07 15:50:11,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:50:12,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:50:12,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:12,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:50:12,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:50:12,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:50:13,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:13,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893115775] [2021-10-07 15:50:13,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893115775] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:13,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:13,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:50:13,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898784235] [2021-10-07 15:50:13,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:13,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:13,897 INFO L87 Difference]: Start difference. First operand 1504 states and 5191 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:16,437 INFO L93 Difference]: Finished difference Result 1804 states and 5988 transitions. [2021-10-07 15:50:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:50:16,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:50:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:16,449 INFO L225 Difference]: With dead ends: 1804 [2021-10-07 15:50:16,449 INFO L226 Difference]: Without dead ends: 1772 [2021-10-07 15:50:16,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1987.9ms TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:50:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-10-07 15:50:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1530. [2021-10-07 15:50:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.458469587965991) internal successors, (5288), 1529 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 5288 transitions. [2021-10-07 15:50:16,519 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 5288 transitions. Word has length 18 [2021-10-07 15:50:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:16,519 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 5288 transitions. [2021-10-07 15:50:16,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 5288 transitions. [2021-10-07 15:50:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:50:16,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:16,525 INFO L512 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:16,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:16,739 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 [2021-10-07 15:50:16,740 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)] === [2021-10-07 15:50:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1418687067, now seen corresponding path program 17 times [2021-10-07 15:50:16,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:16,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984176352] [2021-10-07 15:50:16,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:50:16,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:16,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:16,743 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) [2021-10-07 15:50:16,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:50:17,296 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:50:17,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:17,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:50:17,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:50:17,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:50:23,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:23,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984176352] [2021-10-07 15:50:23,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984176352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:23,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:23,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:50:23,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722807560] [2021-10-07 15:50:23,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:23,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=137, Unknown=2, NotChecked=0, Total=182 [2021-10-07 15:50:23,226 INFO L87 Difference]: Start difference. First operand 1530 states and 5288 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:40,014 WARN L207 SmtUtils]: Spent 14.12 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-07 15:50:46,690 WARN L207 SmtUtils]: Spent 6.39 s on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-10-07 15:50:49,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:49,414 INFO L93 Difference]: Finished difference Result 3012 states and 9865 transitions. [2021-10-07 15:50:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:50:49,415 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:50:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:49,439 INFO L225 Difference]: With dead ends: 3012 [2021-10-07 15:50:49,439 INFO L226 Difference]: Without dead ends: 2932 [2021-10-07 15:50:49,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 30175.7ms TimeCoverageRelationStatistics Valid=125, Invalid=377, Unknown=4, NotChecked=0, Total=506 [2021-10-07 15:50:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-10-07 15:50:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2166. [2021-10-07 15:50:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 3.284064665127021) internal successors, (7110), 2165 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 7110 transitions. [2021-10-07 15:50:49,517 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 7110 transitions. Word has length 18 [2021-10-07 15:50:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:49,517 INFO L470 AbstractCegarLoop]: Abstraction has 2166 states and 7110 transitions. [2021-10-07 15:50:49,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 7110 transitions. [2021-10-07 15:50:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:50:49,522 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:49,523 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:49,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:49,737 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 [2021-10-07 15:50:49,737 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)] === [2021-10-07 15:50:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash 561627734, now seen corresponding path program 18 times [2021-10-07 15:50:49,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:49,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198401340] [2021-10-07 15:50:49,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:50:49,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:49,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:49,740 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) [2021-10-07 15:50:49,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:50:50,338 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:50:50,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:50,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:50:50,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:51,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:55,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:55,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198401340] [2021-10-07 15:50:55,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198401340] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:55,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:55,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:50:55,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921053934] [2021-10-07 15:50:55,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:50:55,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:50:55,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:50:55,658 INFO L87 Difference]: Start difference. First operand 2166 states and 7110 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:57,682 INFO L93 Difference]: Finished difference Result 3065 states and 10117 transitions. [2021-10-07 15:50:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:50:57,683 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 15:50:57,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:57,697 INFO L225 Difference]: With dead ends: 3065 [2021-10-07 15:50:57,698 INFO L226 Difference]: Without dead ends: 3058 [2021-10-07 15:50:57,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2661.7ms TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:50:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-10-07 15:50:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2562. [2021-10-07 15:50:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2561 states have (on average 3.381491604841859) internal successors, (8660), 2561 states have internal predecessors, (8660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 8660 transitions. [2021-10-07 15:50:57,804 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 8660 transitions. Word has length 19 [2021-10-07 15:50:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:57,805 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 8660 transitions. [2021-10-07 15:50:57,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 8660 transitions. [2021-10-07 15:50:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:50:57,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:57,811 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:57,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:58,024 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 [2021-10-07 15:50:58,025 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)] === [2021-10-07 15:50:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash -990488726, now seen corresponding path program 19 times [2021-10-07 15:50:58,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:58,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300065178] [2021-10-07 15:50:58,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:50:58,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:58,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:58,029 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) [2021-10-07 15:50:58,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:50:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:58,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:50:58,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:00,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:03,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:03,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300065178] [2021-10-07 15:51:03,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300065178] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:03,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:03,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:51:03,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618292213] [2021-10-07 15:51:03,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:51:03,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:51:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:03,565 INFO L87 Difference]: Start difference. First operand 2562 states and 8660 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:06,226 INFO L93 Difference]: Finished difference Result 3967 states and 13609 transitions. [2021-10-07 15:51:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:51:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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 19 [2021-10-07 15:51:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:06,243 INFO L225 Difference]: With dead ends: 3967 [2021-10-07 15:51:06,243 INFO L226 Difference]: Without dead ends: 3956 [2021-10-07 15:51:06,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3127.7ms TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:51:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2021-10-07 15:51:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3792. [2021-10-07 15:51:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3791 states have (on average 3.487997889738855) internal successors, (13223), 3791 states have internal predecessors, (13223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 13223 transitions. [2021-10-07 15:51:06,371 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 13223 transitions. Word has length 19 [2021-10-07 15:51:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:06,371 INFO L470 AbstractCegarLoop]: Abstraction has 3792 states and 13223 transitions. [2021-10-07 15:51:06,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 13223 transitions. [2021-10-07 15:51:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:51:06,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:06,380 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:06,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:06,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:06,595 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:51:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:06,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1704040716, now seen corresponding path program 20 times [2021-10-07 15:51:06,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:06,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842672560] [2021-10-07 15:51:06,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:06,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:06,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:06,599 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:06,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:51:07,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:51:07,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:07,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:51:07,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:08,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:11,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:11,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842672560] [2021-10-07 15:51:11,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842672560] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:11,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:11,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:51:11,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951733466] [2021-10-07 15:51:11,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:51:11,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:51:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:11,988 INFO L87 Difference]: Start difference. First operand 3792 states and 13223 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:14,116 INFO L93 Difference]: Finished difference Result 6065 states and 21528 transitions. [2021-10-07 15:51:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:51:14,117 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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 19 [2021-10-07 15:51:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:14,145 INFO L225 Difference]: With dead ends: 6065 [2021-10-07 15:51:14,146 INFO L226 Difference]: Without dead ends: 6056 [2021-10-07 15:51:14,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2526.7ms TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:51:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-07 15:51:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5148. [2021-10-07 15:51:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 5147 states have (on average 3.588303866329901) internal successors, (18469), 5147 states have internal predecessors, (18469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 18469 transitions. [2021-10-07 15:51:14,361 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 18469 transitions. Word has length 19 [2021-10-07 15:51:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:14,362 INFO L470 AbstractCegarLoop]: Abstraction has 5148 states and 18469 transitions. [2021-10-07 15:51:14,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 18469 transitions. [2021-10-07 15:51:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:51:14,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:14,373 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:14,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:14,587 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 [2021-10-07 15:51:14,587 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)] === [2021-10-07 15:51:14,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash 636807150, now seen corresponding path program 21 times [2021-10-07 15:51:14,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:14,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079218844] [2021-10-07 15:51:14,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:14,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:14,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:14,592 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) [2021-10-07 15:51:14,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:51:15,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:51:15,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:15,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:51:15,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:16,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:20,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:20,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079218844] [2021-10-07 15:51:20,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079218844] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:20,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:20,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:51:20,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918265129] [2021-10-07 15:51:20,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:51:20,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:51:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:20,365 INFO L87 Difference]: Start difference. First operand 5148 states and 18469 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:25,903 INFO L93 Difference]: Finished difference Result 8407 states and 30040 transitions. [2021-10-07 15:51:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:51:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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 19 [2021-10-07 15:51:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:25,935 INFO L225 Difference]: With dead ends: 8407 [2021-10-07 15:51:25,936 INFO L226 Difference]: Without dead ends: 8402 [2021-10-07 15:51:25,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 5523.6ms TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:51:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2021-10-07 15:51:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 7814. [2021-10-07 15:51:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7813 states have (on average 3.6280558044285165) internal successors, (28346), 7813 states have internal predecessors, (28346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 28346 transitions. [2021-10-07 15:51:26,294 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 28346 transitions. Word has length 19 [2021-10-07 15:51:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:26,295 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 28346 transitions. [2021-10-07 15:51:26,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 28346 transitions. [2021-10-07 15:51:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:51:26,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:26,310 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:26,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:26,524 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 [2021-10-07 15:51:26,525 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)] === [2021-10-07 15:51:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1427376792, now seen corresponding path program 22 times [2021-10-07 15:51:26,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:26,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607395845] [2021-10-07 15:51:26,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:26,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:26,529 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) [2021-10-07 15:51:26,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:51:27,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:27,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:51:27,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:29,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:32,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:32,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607395845] [2021-10-07 15:51:32,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607395845] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:32,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:32,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:51:32,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859173128] [2021-10-07 15:51:32,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:51:32,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:51:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:32,462 INFO L87 Difference]: Start difference. First operand 7814 states and 28346 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:35,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:35,644 INFO L93 Difference]: Finished difference Result 11211 states and 40229 transitions. [2021-10-07 15:51:35,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:51:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 15:51:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:35,671 INFO L225 Difference]: With dead ends: 11211 [2021-10-07 15:51:35,672 INFO L226 Difference]: Without dead ends: 11200 [2021-10-07 15:51:35,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3709.2ms TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:51:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11200 states. [2021-10-07 15:51:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11200 to 10860. [2021-10-07 15:51:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 10859 states have (on average 3.6370752371304906) internal successors, (39495), 10859 states have internal predecessors, (39495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 39495 transitions. [2021-10-07 15:51:36,249 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 39495 transitions. Word has length 19 [2021-10-07 15:51:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:36,250 INFO L470 AbstractCegarLoop]: Abstraction has 10860 states and 39495 transitions. [2021-10-07 15:51:36,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 39495 transitions. [2021-10-07 15:51:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:51:36,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:36,303 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:36,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:36,504 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 [2021-10-07 15:51:36,505 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)] === [2021-10-07 15:51:36,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:36,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2140355502, now seen corresponding path program 23 times [2021-10-07 15:51:36,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:36,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016230154] [2021-10-07 15:51:36,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:51:36,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:36,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:36,508 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) [2021-10-07 15:51:36,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:51:37,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:51:37,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:37,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:51:37,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:39,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:42,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:42,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016230154] [2021-10-07 15:51:42,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016230154] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:42,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:42,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:51:42,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074127504] [2021-10-07 15:51:42,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:51:42,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:42,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:51:42,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:42,670 INFO L87 Difference]: Start difference. First operand 10860 states and 39495 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:45,700 INFO L93 Difference]: Finished difference Result 13297 states and 48112 transitions. [2021-10-07 15:51:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:51:45,701 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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 19 [2021-10-07 15:51:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:45,736 INFO L225 Difference]: With dead ends: 13297 [2021-10-07 15:51:45,736 INFO L226 Difference]: Without dead ends: 13292 [2021-10-07 15:51:45,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3441.0ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:51:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13292 states. [2021-10-07 15:51:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13292 to 9722. [2021-10-07 15:51:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9722 states, 9721 states have (on average 3.606213352535747) internal successors, (35056), 9721 states have internal predecessors, (35056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 35056 transitions. [2021-10-07 15:51:46,089 INFO L78 Accepts]: Start accepts. Automaton has 9722 states and 35056 transitions. Word has length 19 [2021-10-07 15:51:46,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:46,090 INFO L470 AbstractCegarLoop]: Abstraction has 9722 states and 35056 transitions. [2021-10-07 15:51:46,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:46,090 INFO L276 IsEmpty]: Start isEmpty. Operand 9722 states and 35056 transitions. [2021-10-07 15:51:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:51:46,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:46,115 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:46,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:46,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:46,329 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:51:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1749774860, now seen corresponding path program 24 times [2021-10-07 15:51:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:46,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971255859] [2021-10-07 15:51:46,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:51:46,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:46,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:46,333 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:46,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:51:47,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:51:47,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:47,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:51:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:48,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:53,167 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:53,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:53,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971255859] [2021-10-07 15:51:53,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971255859] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:53,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:53,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:51:53,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651561185] [2021-10-07 15:51:53,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:51:53,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:51:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:53,171 INFO L87 Difference]: Start difference. First operand 9722 states and 35056 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:56,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:56,525 INFO L93 Difference]: Finished difference Result 13797 states and 49496 transitions. [2021-10-07 15:51:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:51:56,526 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 15:51:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:56,587 INFO L225 Difference]: With dead ends: 13797 [2021-10-07 15:51:56,587 INFO L226 Difference]: Without dead ends: 13792 [2021-10-07 15:51:56,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3778.0ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:51:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13792 states. [2021-10-07 15:51:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13792 to 12478. [2021-10-07 15:51:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12478 states, 12477 states have (on average 3.632603991344073) internal successors, (45324), 12477 states have internal predecessors, (45324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12478 states to 12478 states and 45324 transitions. [2021-10-07 15:51:57,015 INFO L78 Accepts]: Start accepts. Automaton has 12478 states and 45324 transitions. Word has length 19 [2021-10-07 15:51:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:57,015 INFO L470 AbstractCegarLoop]: Abstraction has 12478 states and 45324 transitions. [2021-10-07 15:51:57,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12478 states and 45324 transitions. [2021-10-07 15:51:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:51:57,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:57,033 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:57,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-07 15:51:57,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:57,234 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:51:57,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:57,235 INFO L82 PathProgramCache]: Analyzing trace with hash -792727574, now seen corresponding path program 25 times [2021-10-07 15:51:57,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:57,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062642745] [2021-10-07 15:51:57,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:51:57,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:57,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:57,237 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:57,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:51:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:51:58,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:51:58,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:59,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:03,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:03,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062642745] [2021-10-07 15:52:03,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062642745] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:03,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:03,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:52:03,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145844] [2021-10-07 15:52:03,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:52:03,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:52:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:52:03,450 INFO L87 Difference]: Start difference. First operand 12478 states and 45324 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:06,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:06,036 INFO L93 Difference]: Finished difference Result 16607 states and 60359 transitions. [2021-10-07 15:52:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:52:06,037 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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 19 [2021-10-07 15:52:06,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:06,084 INFO L225 Difference]: With dead ends: 16607 [2021-10-07 15:52:06,084 INFO L226 Difference]: Without dead ends: 16602 [2021-10-07 15:52:06,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3190.9ms TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:52:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16602 states. [2021-10-07 15:52:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16602 to 13662. [2021-10-07 15:52:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13662 states, 13661 states have (on average 3.617158333943342) internal successors, (49414), 13661 states have internal predecessors, (49414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 49414 transitions. [2021-10-07 15:52:06,476 INFO L78 Accepts]: Start accepts. Automaton has 13662 states and 49414 transitions. Word has length 19 [2021-10-07 15:52:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:06,477 INFO L470 AbstractCegarLoop]: Abstraction has 13662 states and 49414 transitions. [2021-10-07 15:52:06,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 13662 states and 49414 transitions. [2021-10-07 15:52:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:52:06,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:06,494 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:06,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-07 15:52:06,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:06,695 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:52:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:06,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1204710196, now seen corresponding path program 26 times [2021-10-07 15:52:06,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:06,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025045761] [2021-10-07 15:52:06,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:52:06,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:06,700 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:06,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:52:07,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:52:07,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:07,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:52:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:09,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:12,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:12,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025045761] [2021-10-07 15:52:12,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025045761] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:12,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:12,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:52:12,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704195325] [2021-10-07 15:52:12,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:52:12,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:12,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:52:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:52:12,811 INFO L87 Difference]: Start difference. First operand 13662 states and 49414 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:17,968 INFO L93 Difference]: Finished difference Result 15467 states and 55711 transitions. [2021-10-07 15:52:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:52:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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 19 [2021-10-07 15:52:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:18,019 INFO L225 Difference]: With dead ends: 15467 [2021-10-07 15:52:18,020 INFO L226 Difference]: Without dead ends: 15458 [2021-10-07 15:52:18,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5401.9ms TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:52:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15458 states. [2021-10-07 15:52:18,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15458 to 15024. [2021-10-07 15:52:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15024 states, 15023 states have (on average 3.627038540903947) internal successors, (54489), 15023 states have internal predecessors, (54489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15024 states to 15024 states and 54489 transitions. [2021-10-07 15:52:18,569 INFO L78 Accepts]: Start accepts. Automaton has 15024 states and 54489 transitions. Word has length 19 [2021-10-07 15:52:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:18,569 INFO L470 AbstractCegarLoop]: Abstraction has 15024 states and 54489 transitions. [2021-10-07 15:52:18,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 15024 states and 54489 transitions. [2021-10-07 15:52:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:52:18,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:18,591 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:18,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:18,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:18,797 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:52:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:18,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1571603090, now seen corresponding path program 27 times [2021-10-07 15:52:18,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:18,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984093255] [2021-10-07 15:52:18,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:52:18,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:18,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:18,801 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:18,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:52:19,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-07 15:52:19,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:19,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:52:19,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:22,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:28,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:28,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984093255] [2021-10-07 15:52:28,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984093255] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:28,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:28,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 15:52:28,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229476243] [2021-10-07 15:52:28,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:52:28,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:52:28,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:52:28,315 INFO L87 Difference]: Start difference. First operand 15024 states and 54489 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:58,400 INFO L93 Difference]: Finished difference Result 15779 states and 56295 transitions. [2021-10-07 15:52:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 15:52:58,402 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 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 21 [2021-10-07 15:52:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:58,453 INFO L225 Difference]: With dead ends: 15779 [2021-10-07 15:52:58,453 INFO L226 Difference]: Without dead ends: 15774 [2021-10-07 15:52:58,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 30431.3ms TimeCoverageRelationStatistics Valid=781, Invalid=1669, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:52:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15774 states. [2021-10-07 15:52:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15774 to 15124. [2021-10-07 15:52:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15124 states, 15123 states have (on average 3.6251405144481916) internal successors, (54823), 15123 states have internal predecessors, (54823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 54823 transitions. [2021-10-07 15:52:59,087 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 54823 transitions. Word has length 21 [2021-10-07 15:52:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:59,088 INFO L470 AbstractCegarLoop]: Abstraction has 15124 states and 54823 transitions. [2021-10-07 15:52:59,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 54823 transitions. [2021-10-07 15:52:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:52:59,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:59,112 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:59,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:59,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:59,313 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:52:59,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:59,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1304332586, now seen corresponding path program 28 times [2021-10-07 15:52:59,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:59,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503814485] [2021-10-07 15:52:59,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:52:59,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:59,317 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:59,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:53:00,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:53:00,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:00,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:53:00,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:02,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:06,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:06,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503814485] [2021-10-07 15:53:06,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503814485] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:06,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:06,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-10-07 15:53:06,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383347306] [2021-10-07 15:53:06,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:53:06,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:53:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:53:06,623 INFO L87 Difference]: Start difference. First operand 15124 states and 54823 transitions. Second operand has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 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) [2021-10-07 15:53:28,437 WARN L207 SmtUtils]: Spent 8.96 s on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-07 15:53:47,655 WARN L207 SmtUtils]: Spent 9.06 s on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-07 15:53:53,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:53,238 INFO L93 Difference]: Finished difference Result 16388 states and 58058 transitions. [2021-10-07 15:53:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-07 15:53:53,240 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 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 21 [2021-10-07 15:53:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:53,290 INFO L225 Difference]: With dead ends: 16388 [2021-10-07 15:53:53,291 INFO L226 Difference]: Without dead ends: 16388 [2021-10-07 15:53:53,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 46019.5ms TimeCoverageRelationStatistics Valid=1280, Invalid=4270, Unknown=0, NotChecked=0, Total=5550 [2021-10-07 15:53:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16388 states. [2021-10-07 15:53:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16388 to 15266. [2021-10-07 15:53:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15266 states, 15265 states have (on average 3.618932197838192) internal successors, (55243), 15265 states have internal predecessors, (55243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15266 states to 15266 states and 55243 transitions. [2021-10-07 15:53:53,804 INFO L78 Accepts]: Start accepts. Automaton has 15266 states and 55243 transitions. Word has length 21 [2021-10-07 15:53:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:53,804 INFO L470 AbstractCegarLoop]: Abstraction has 15266 states and 55243 transitions. [2021-10-07 15:53:53,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 25 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) [2021-10-07 15:53:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15266 states and 55243 transitions. [2021-10-07 15:53:53,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:53:53,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:53,828 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:53,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:54,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:54,030 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:53:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 264025326, now seen corresponding path program 29 times [2021-10-07 15:53:54,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:54,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734208967] [2021-10-07 15:53:54,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:53:54,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:54,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:54,033 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:54,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:53:55,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:53:55,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:53:55,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:57,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:03,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:03,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734208967] [2021-10-07 15:54:03,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734208967] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:03,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:03,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 15:54:03,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070954787] [2021-10-07 15:54:03,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:54:03,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:54:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:54:03,957 INFO L87 Difference]: Start difference. First operand 15266 states and 55243 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:10,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:10,094 INFO L93 Difference]: Finished difference Result 20637 states and 73934 transitions. [2021-10-07 15:54:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:54:10,095 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:54:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:10,157 INFO L225 Difference]: With dead ends: 20637 [2021-10-07 15:54:10,158 INFO L226 Difference]: Without dead ends: 20616 [2021-10-07 15:54:10,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 6685.0ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:54:10,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20616 states. [2021-10-07 15:54:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20616 to 19916. [2021-10-07 15:54:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19916 states, 19915 states have (on average 3.6148631684659804) internal successors, (71990), 19915 states have internal predecessors, (71990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19916 states to 19916 states and 71990 transitions. [2021-10-07 15:54:10,839 INFO L78 Accepts]: Start accepts. Automaton has 19916 states and 71990 transitions. Word has length 21 [2021-10-07 15:54:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:10,839 INFO L470 AbstractCegarLoop]: Abstraction has 19916 states and 71990 transitions. [2021-10-07 15:54:10,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 19916 states and 71990 transitions. [2021-10-07 15:54:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:54:10,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:10,866 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:10,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:11,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:11,067 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:54:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:11,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2144623088, now seen corresponding path program 30 times [2021-10-07 15:54:11,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:11,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332967714] [2021-10-07 15:54:11,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:54:11,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:11,071 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:11,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 15:54:12,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-07 15:54:12,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:12,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:54:12,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:14,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:20,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:20,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332967714] [2021-10-07 15:54:20,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332967714] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:20,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:20,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 15:54:20,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058203334] [2021-10-07 15:54:20,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:54:20,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:54:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:54:20,616 INFO L87 Difference]: Start difference. First operand 19916 states and 71990 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:23,991 INFO L93 Difference]: Finished difference Result 25417 states and 92363 transitions. [2021-10-07 15:54:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:54:23,992 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:54:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:24,075 INFO L225 Difference]: With dead ends: 25417 [2021-10-07 15:54:24,075 INFO L226 Difference]: Without dead ends: 25412 [2021-10-07 15:54:24,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4230.8ms TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:54:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25412 states. [2021-10-07 15:54:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25412 to 20560. [2021-10-07 15:54:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20560 states, 20559 states have (on average 3.6060119655625273) internal successors, (74136), 20559 states have internal predecessors, (74136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20560 states to 20560 states and 74136 transitions. [2021-10-07 15:54:24,772 INFO L78 Accepts]: Start accepts. Automaton has 20560 states and 74136 transitions. Word has length 21 [2021-10-07 15:54:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:24,773 INFO L470 AbstractCegarLoop]: Abstraction has 20560 states and 74136 transitions. [2021-10-07 15:54:24,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 20560 states and 74136 transitions. [2021-10-07 15:54:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:54:24,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:24,804 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:24,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:25,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:25,018 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:54:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:25,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2092400136, now seen corresponding path program 31 times [2021-10-07 15:54:25,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:25,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318290191] [2021-10-07 15:54:25,020 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:54:25,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:25,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:25,021 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:25,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 15:54:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:54:26,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:54:26,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:28,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:34,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:34,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318290191] [2021-10-07 15:54:34,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318290191] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:34,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:34,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 15:54:34,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051313436] [2021-10-07 15:54:34,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:54:34,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:54:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=336, Unknown=1, NotChecked=0, Total=462 [2021-10-07 15:54:34,054 INFO L87 Difference]: Start difference. First operand 20560 states and 74136 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:55,091 WARN L207 SmtUtils]: Spent 10.20 s on a formula simplification that was a NOOP. DAG size: 35 [2021-10-07 15:55:05,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:05,215 INFO L93 Difference]: Finished difference Result 26048 states and 92046 transitions. [2021-10-07 15:55:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-07 15:55:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:55:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:05,305 INFO L225 Difference]: With dead ends: 26048 [2021-10-07 15:55:05,305 INFO L226 Difference]: Without dead ends: 26048 [2021-10-07 15:55:05,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 31781.3ms TimeCoverageRelationStatistics Valid=1019, Invalid=3140, Unknown=1, NotChecked=0, Total=4160 [2021-10-07 15:55:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26048 states. [2021-10-07 15:55:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26048 to 22684. [2021-10-07 15:55:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22684 states, 22683 states have (on average 3.57307234492792) internal successors, (81048), 22683 states have internal predecessors, (81048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22684 states to 22684 states and 81048 transitions. [2021-10-07 15:55:06,129 INFO L78 Accepts]: Start accepts. Automaton has 22684 states and 81048 transitions. Word has length 21 [2021-10-07 15:55:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:06,129 INFO L470 AbstractCegarLoop]: Abstraction has 22684 states and 81048 transitions. [2021-10-07 15:55:06,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 22684 states and 81048 transitions. [2021-10-07 15:55:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:55:06,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:06,169 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:06,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:06,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:06,383 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:55:06,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:06,384 INFO L82 PathProgramCache]: Analyzing trace with hash -166366058, now seen corresponding path program 32 times [2021-10-07 15:55:06,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:06,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799907747] [2021-10-07 15:55:06,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:55:06,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:06,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:06,387 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:06,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 15:55:07,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:55:07,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:07,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:55:07,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:10,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:15,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:15,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799907747] [2021-10-07 15:55:15,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799907747] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:15,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:15,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 15:55:15,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034968931] [2021-10-07 15:55:15,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:55:15,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:15,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:55:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:55:15,828 INFO L87 Difference]: Start difference. First operand 22684 states and 81048 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:19,175 INFO L93 Difference]: Finished difference Result 29401 states and 105970 transitions. [2021-10-07 15:55:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:55:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:55:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:19,270 INFO L225 Difference]: With dead ends: 29401 [2021-10-07 15:55:19,270 INFO L226 Difference]: Without dead ends: 29396 [2021-10-07 15:55:19,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4330.4ms TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:55:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29396 states. [2021-10-07 15:55:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29396 to 25532. [2021-10-07 15:55:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25532 states, 25531 states have (on average 3.5958638517880224) internal successors, (91806), 25531 states have internal predecessors, (91806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25532 states to 25532 states and 91806 transitions. [2021-10-07 15:55:20,213 INFO L78 Accepts]: Start accepts. Automaton has 25532 states and 91806 transitions. Word has length 21 [2021-10-07 15:55:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:20,213 INFO L470 AbstractCegarLoop]: Abstraction has 25532 states and 91806 transitions. [2021-10-07 15:55:20,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 25532 states and 91806 transitions. [2021-10-07 15:55:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:55:20,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:20,248 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:20,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-07 15:55:20,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:20,449 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:55:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:20,450 INFO L82 PathProgramCache]: Analyzing trace with hash 170287592, now seen corresponding path program 33 times [2021-10-07 15:55:20,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:20,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272638504] [2021-10-07 15:55:20,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:55:20,451 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:20,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:20,453 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:20,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 15:55:22,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-07 15:55:22,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:22,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:55:22,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:24,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:32,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:32,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272638504] [2021-10-07 15:55:32,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272638504] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:32,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:32,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-07 15:55:32,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048695303] [2021-10-07 15:55:32,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:55:32,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:55:32,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=350, Unknown=2, NotChecked=0, Total=506 [2021-10-07 15:55:32,827 INFO L87 Difference]: Start difference. First operand 25532 states and 91806 transitions. Second operand has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:10,466 WARN L207 SmtUtils]: Spent 20.95 s on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-10-07 15:56:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:16,049 INFO L93 Difference]: Finished difference Result 28486 states and 102419 transitions. [2021-10-07 15:56:16,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-07 15:56:16,051 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 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 21 [2021-10-07 15:56:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:16,258 INFO L225 Difference]: With dead ends: 28486 [2021-10-07 15:56:16,258 INFO L226 Difference]: Without dead ends: 28428 [2021-10-07 15:56:16,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 44920.5ms TimeCoverageRelationStatistics Valid=987, Invalid=1981, Unknown=2, NotChecked=0, Total=2970 [2021-10-07 15:56:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28428 states. [2021-10-07 15:56:17,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28428 to 26700. [2021-10-07 15:56:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26700 states, 26699 states have (on average 3.599535563129705) internal successors, (96104), 26699 states have internal predecessors, (96104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26700 states to 26700 states and 96104 transitions. [2021-10-07 15:56:17,296 INFO L78 Accepts]: Start accepts. Automaton has 26700 states and 96104 transitions. Word has length 21 [2021-10-07 15:56:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:17,296 INFO L470 AbstractCegarLoop]: Abstraction has 26700 states and 96104 transitions. [2021-10-07 15:56:17,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.608695652173913) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 26700 states and 96104 transitions. [2021-10-07 15:56:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:56:17,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:17,343 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:56:17,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:17,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:17,554 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:56:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:17,555 INFO L82 PathProgramCache]: Analyzing trace with hash 17813172, now seen corresponding path program 34 times [2021-10-07 15:56:17,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:17,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286426386] [2021-10-07 15:56:17,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:56:17,557 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:17,557 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:17,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 15:56:19,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:56:19,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:19,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:56:19,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:56:21,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:27,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:27,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286426386] [2021-10-07 15:56:27,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286426386] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:27,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:27,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 23 [2021-10-07 15:56:27,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895992997] [2021-10-07 15:56:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:56:27,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:56:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=396, Unknown=1, NotChecked=0, Total=552 [2021-10-07 15:56:27,727 INFO L87 Difference]: Start difference. First operand 26700 states and 96104 transitions. Second operand has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:48,832 WARN L207 SmtUtils]: Spent 20.89 s on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-10-07 15:57:28,240 WARN L207 SmtUtils]: Spent 37.95 s on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-10-07 15:58:01,333 WARN L207 SmtUtils]: Spent 31.60 s on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-10-07 15:58:37,062 WARN L207 SmtUtils]: Spent 31.97 s on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-10-07 15:59:19,624 WARN L207 SmtUtils]: Spent 31.77 s on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-10-07 15:59:41,663 WARN L207 SmtUtils]: Spent 21.33 s on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-10-07 15:59:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:59:41,942 INFO L93 Difference]: Finished difference Result 27674 states and 98586 transitions. [2021-10-07 15:59:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-07 15:59:41,944 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:59:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:59:42,037 INFO L225 Difference]: With dead ends: 27674 [2021-10-07 15:59:42,037 INFO L226 Difference]: Without dead ends: 27674 [2021-10-07 15:59:42,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 196060.4ms TimeCoverageRelationStatistics Valid=705, Invalid=2050, Unknown=1, NotChecked=0, Total=2756 [2021-10-07 15:59:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27674 states. [2021-10-07 15:59:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27674 to 26788. [2021-10-07 15:59:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26788 states, 26787 states have (on average 3.5980886250793294) internal successors, (96382), 26787 states have internal predecessors, (96382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26788 states to 26788 states and 96382 transitions. [2021-10-07 15:59:43,132 INFO L78 Accepts]: Start accepts. Automaton has 26788 states and 96382 transitions. Word has length 21 [2021-10-07 15:59:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:59:43,132 INFO L470 AbstractCegarLoop]: Abstraction has 26788 states and 96382 transitions. [2021-10-07 15:59:43,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 26788 states and 96382 transitions. [2021-10-07 15:59:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:59:43,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:59:43,171 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:59:43,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-07 15:59:43,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:59:43,372 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:59:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:59:43,373 INFO L82 PathProgramCache]: Analyzing trace with hash 744081644, now seen corresponding path program 35 times [2021-10-07 15:59:43,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:59:43,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787818358] [2021-10-07 15:59:43,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:59:43,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:59:43,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:59:43,376 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:59:43,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 15:59:45,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-07 15:59:45,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:59:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:59:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:59:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:47,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:59:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:53,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:59:53,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787818358] [2021-10-07 15:59:53,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787818358] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:59:53,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:59:53,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 15:59:53,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189228357] [2021-10-07 15:59:53,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:59:53,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:59:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:59:53,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:59:53,598 INFO L87 Difference]: Start difference. First operand 26788 states and 96382 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:59:56,787 INFO L93 Difference]: Finished difference Result 35219 states and 127231 transitions. [2021-10-07 15:59:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:59:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:59:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:59:56,911 INFO L225 Difference]: With dead ends: 35219 [2021-10-07 15:59:56,911 INFO L226 Difference]: Without dead ends: 35212 [2021-10-07 15:59:56,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 4051.4ms TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:59:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35212 states. [2021-10-07 15:59:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35212 to 34966. [2021-10-07 15:59:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34966 states, 34965 states have (on average 3.6224224224224226) internal successors, (126658), 34965 states have internal predecessors, (126658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34966 states to 34966 states and 126658 transitions. [2021-10-07 15:59:58,359 INFO L78 Accepts]: Start accepts. Automaton has 34966 states and 126658 transitions. Word has length 21 [2021-10-07 15:59:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:59:58,360 INFO L470 AbstractCegarLoop]: Abstraction has 34966 states and 126658 transitions. [2021-10-07 15:59:58,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 34966 states and 126658 transitions. [2021-10-07 15:59:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:59:58,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:59:58,410 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:59:58,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 15:59:58,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:59:58,611 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:59:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:59:58,793 INFO L82 PathProgramCache]: Analyzing trace with hash -918735478, now seen corresponding path program 36 times [2021-10-07 15:59:58,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:59:58,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282587493] [2021-10-07 15:59:58,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:59:58,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:59:58,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:59:58,822 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:59:58,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 16:00:00,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:00:00,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:00:00,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:00:00,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:02,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:08,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:08,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282587493] [2021-10-07 16:00:08,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282587493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:00:08,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:00:08,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:00:08,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490594298] [2021-10-07 16:00:08,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:00:08,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:08,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:00:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:00:08,944 INFO L87 Difference]: Start difference. First operand 34966 states and 126658 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:15,399 INFO L93 Difference]: Finished difference Result 42131 states and 152665 transitions. [2021-10-07 16:00:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:00:15,400 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 16:00:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:15,621 INFO L225 Difference]: With dead ends: 42131 [2021-10-07 16:00:15,621 INFO L226 Difference]: Without dead ends: 42126 [2021-10-07 16:00:15,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 7125.7ms TimeCoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 16:00:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42126 states. [2021-10-07 16:00:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42126 to 37320. [2021-10-07 16:00:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37320 states, 37319 states have (on average 3.6328143840938933) internal successors, (135573), 37319 states have internal predecessors, (135573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37320 states to 37320 states and 135573 transitions. [2021-10-07 16:00:17,543 INFO L78 Accepts]: Start accepts. Automaton has 37320 states and 135573 transitions. Word has length 21 [2021-10-07 16:00:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:17,543 INFO L470 AbstractCegarLoop]: Abstraction has 37320 states and 135573 transitions. [2021-10-07 16:00:17,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 37320 states and 135573 transitions. [2021-10-07 16:00:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 16:00:17,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:17,612 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:00:17,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-07 16:00:17,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:17,828 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash -415861238, now seen corresponding path program 37 times [2021-10-07 16:00:17,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:17,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613551931] [2021-10-07 16:00:17,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:00:17,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:17,832 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:17,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 16:00:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:19,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:00:19,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:22,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:26,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:26,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613551931] [2021-10-07 16:00:26,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613551931] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:00:26,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:00:26,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-10-07 16:00:26,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823031063] [2021-10-07 16:00:26,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 16:00:26,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 16:00:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:00:26,556 INFO L87 Difference]: Start difference. First operand 37320 states and 135573 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 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) [2021-10-07 16:00:55,065 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-10-07 16:01:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:10,688 INFO L93 Difference]: Finished difference Result 38398 states and 138355 transitions. [2021-10-07 16:01:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-07 16:01:10,691 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 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 21 [2021-10-07 16:01:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:10,822 INFO L225 Difference]: With dead ends: 38398 [2021-10-07 16:01:10,822 INFO L226 Difference]: Without dead ends: 38398 [2021-10-07 16:01:10,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 37415.1ms TimeCoverageRelationStatistics Valid=850, Invalid=2230, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 16:01:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38398 states. [2021-10-07 16:01:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38398 to 37500. [2021-10-07 16:01:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37500 states, 37499 states have (on average 3.6325502013387023) internal successors, (136217), 37499 states have internal predecessors, (136217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37500 states to 37500 states and 136217 transitions. [2021-10-07 16:01:12,159 INFO L78 Accepts]: Start accepts. Automaton has 37500 states and 136217 transitions. Word has length 21 [2021-10-07 16:01:12,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:12,160 INFO L470 AbstractCegarLoop]: Abstraction has 37500 states and 136217 transitions. [2021-10-07 16:01:12,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 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) [2021-10-07 16:01:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 37500 states and 136217 transitions. [2021-10-07 16:01:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 16:01:12,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:12,212 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:12,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:12,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:12,413 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:01:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1406325366, now seen corresponding path program 38 times [2021-10-07 16:01:12,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:12,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795235169] [2021-10-07 16:01:12,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:01:12,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:12,417 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:12,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 16:01:14,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:01:14,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:01:14,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:01:14,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:16,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:21,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:21,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795235169] [2021-10-07 16:01:21,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795235169] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:21,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:21,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:01:21,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591346471] [2021-10-07 16:01:21,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:01:21,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:01:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:01:21,962 INFO L87 Difference]: Start difference. First operand 37500 states and 136217 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:25,749 INFO L93 Difference]: Finished difference Result 53255 states and 195727 transitions. [2021-10-07 16:01:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 16:01:25,751 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 16:01:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:25,955 INFO L225 Difference]: With dead ends: 53255 [2021-10-07 16:01:25,955 INFO L226 Difference]: Without dead ends: 53246 [2021-10-07 16:01:25,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4459.0ms TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:01:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53246 states. [2021-10-07 16:01:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53246 to 51788. [2021-10-07 16:01:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51788 states, 51787 states have (on average 3.683955432830633) internal successors, (190781), 51787 states have internal predecessors, (190781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51788 states to 51788 states and 190781 transitions. [2021-10-07 16:01:28,601 INFO L78 Accepts]: Start accepts. Automaton has 51788 states and 190781 transitions. Word has length 21 [2021-10-07 16:01:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:28,601 INFO L470 AbstractCegarLoop]: Abstraction has 51788 states and 190781 transitions. [2021-10-07 16:01:28,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:28,602 INFO L276 IsEmpty]: Start isEmpty. Operand 51788 states and 190781 transitions. [2021-10-07 16:01:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 16:01:28,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:28,698 INFO L512 BasicCegarLoop]: trace histogram [9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:28,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:28,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:28,899 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:01:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:28,901 INFO L82 PathProgramCache]: Analyzing trace with hash -368206572, now seen corresponding path program 39 times [2021-10-07 16:01:28,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:28,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582223456] [2021-10-07 16:01:28,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:01:28,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:28,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:28,903 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:28,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 16:01:31,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:01:31,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:01:31,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:01:31,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-07 16:01:32,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-07 16:01:33,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:33,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582223456] [2021-10-07 16:01:33,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582223456] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:33,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:33,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:01:33,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441746886] [2021-10-07 16:01:33,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:01:33,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:01:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:01:33,461 INFO L87 Difference]: Start difference. First operand 51788 states and 190781 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:36,350 INFO L93 Difference]: Finished difference Result 52562 states and 192763 transitions. [2021-10-07 16:01:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:01:36,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 16:01:36,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:36,768 INFO L225 Difference]: With dead ends: 52562 [2021-10-07 16:01:36,768 INFO L226 Difference]: Without dead ends: 52562 [2021-10-07 16:01:36,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2191.7ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:01:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52562 states. [2021-10-07 16:01:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52562 to 51852. [2021-10-07 16:01:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51852 states, 51851 states have (on average 3.6835355152263216) internal successors, (190995), 51851 states have internal predecessors, (190995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51852 states to 51852 states and 190995 transitions. [2021-10-07 16:01:39,103 INFO L78 Accepts]: Start accepts. Automaton has 51852 states and 190995 transitions. Word has length 22 [2021-10-07 16:01:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:39,103 INFO L470 AbstractCegarLoop]: Abstraction has 51852 states and 190995 transitions. [2021-10-07 16:01:39,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 51852 states and 190995 transitions. [2021-10-07 16:01:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 16:01:39,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:39,177 INFO L512 BasicCegarLoop]: trace histogram [9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:39,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-07 16:01:39,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:39,378 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:01:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:39,379 INFO L82 PathProgramCache]: Analyzing trace with hash -276079250, now seen corresponding path program 40 times [2021-10-07 16:01:39,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:39,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157681635] [2021-10-07 16:01:39,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:01:39,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:39,382 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:39,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 16:01:41,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:01:41,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:01:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:01:41,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:01:43,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2021-10-07 16:01:54,094 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:01:54,094 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:01:54,101 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:01:54,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:54,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:54,306 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. [2021-10-07 16:01:54,309 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:01:54,309 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:01:54,309 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:01:54,309 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:01:54,309 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:01:54,310 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:01:54,310 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:01:54,310 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:01:54,310 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:01:54,310 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:01:54,310 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:01:54,316 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:01:54,316 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:01:54,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:01:54 BasicIcfg [2021-10-07 16:01:54,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:01:54,319 INFO L168 Benchmark]: Toolchain (without parser) took 816453.35 ms. Allocated memory was 165.7 MB in the beginning and 4.7 GB in the end (delta: 4.6 GB). Free memory was 139.7 MB in the beginning and 3.5 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2021-10-07 16:01:54,320 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 165.7 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:01:54,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.14 ms. Allocated memory is still 165.7 MB. Free memory was 139.4 MB in the beginning and 128.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:01:54,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.65 ms. Allocated memory is still 165.7 MB. Free memory was 128.3 MB in the beginning and 126.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:01:54,322 INFO L168 Benchmark]: Boogie Preprocessor took 33.80 ms. Allocated memory is still 165.7 MB. Free memory was 126.7 MB in the beginning and 125.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:01:54,322 INFO L168 Benchmark]: RCFGBuilder took 542.49 ms. Allocated memory is still 165.7 MB. Free memory was 125.4 MB in the beginning and 111.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:01:54,322 INFO L168 Benchmark]: TraceAbstraction took 815454.84 ms. Allocated memory was 165.7 MB in the beginning and 4.7 GB in the end (delta: 4.6 GB). Free memory was 147.2 MB in the beginning and 3.5 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2021-10-07 16:01:54,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 165.7 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.14 ms. Allocated memory is still 165.7 MB. Free memory was 139.4 MB in the beginning and 128.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.65 ms. Allocated memory is still 165.7 MB. Free memory was 128.3 MB in the beginning and 126.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.80 ms. Allocated memory is still 165.7 MB. Free memory was 126.7 MB in the beginning and 125.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 542.49 ms. Allocated memory is still 165.7 MB. Free memory was 125.4 MB in the beginning and 111.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 815454.84 ms. Allocated memory was 165.7 MB in the beginning and 4.7 GB in the end (delta: 4.6 GB). Free memory was 147.2 MB in the beginning and 3.5 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9521.4ms, 107 PlacesBefore, 30 PlacesAfterwards, 108 TransitionsBefore, 25 TransitionsAfterwards, 936 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 120 TotalNumberOfCompositions, 1109 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1109, positive: 1109, positive conditional: 0, positive unconditional: 1109, 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: 665, positive: 665, positive conditional: 0, positive unconditional: 665, 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: 665, positive: 648, positive conditional: 0, positive unconditional: 648, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 224, positive: 224, positive conditional: 0, positive unconditional: 224, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1109, positive: 444, positive conditional: 0, positive unconditional: 444, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 665, unknown conditional: 0, unknown unconditional: 665] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 23 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 815313.8ms, OverallIterations: 49, TraceHistogramMax: 9, EmptinessCheckTime: 846.8ms, AutomataDifference: 531273.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9602.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1255 SDtfs, 5260 SDslu, 8590 SDs, 0 SdLazy, 11678 SolverSat, 2617 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 59908.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1964 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 1122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5694 ImplicationChecksByTransitivity, 538008.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51852occurred in iteration=48, InterpolantAutomatonStates: 1103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19870.8ms AutomataMinimizationTime, 48 MinimizatonAttempts, 39416 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 423.5ms SsaConstructionTime, 5347.9ms SatisfiabilityAnalysisTime, 193744.6ms InterpolantComputationTime, 785 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 1474 ConstructedInterpolants, 126 QuantifiedInterpolants, 37582 SizeOfPredicates, 575 NumberOfNonLiveVariables, 3064 ConjunctsInSsa, 517 ConjunctsInUnsatCore, 96 InterpolantComputations, 14 PerfectInterpolantSequences, 279/1568 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown