/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 18:13:22,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 18:13:22,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 18:13:22,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 18:13:22,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 18:13:22,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 18:13:22,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 18:13:22,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 18:13:22,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 18:13:22,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 18:13:22,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 18:13:22,219 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 18:13:22,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 18:13:22,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 18:13:22,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 18:13:22,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 18:13:22,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 18:13:22,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 18:13:22,221 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 18:13:22,222 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 18:13:22,222 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 18:13:22,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 18:13:22,223 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 18:13:22,223 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 18:13:22,223 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 18:13:22,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 18:13:22,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 18:13:22,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 18:13:22,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 18:13:22,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 18:13:22,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:13:22,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 18:13:22,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 18:13:22,226 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 18:13:22,226 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 18:13:22,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 18:13:22,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 18:13:22,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 18:13:22,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 18:13:22,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 18:13:22,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 18:13:22,768 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 18:13:22,769 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 18:13:22,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2021-10-08 18:13:22,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33a8f3d11/332d87162ec946578b5cc20178074602/FLAGdf261cf87 [2021-10-08 18:13:23,567 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 18:13:23,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2021-10-08 18:13:23,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33a8f3d11/332d87162ec946578b5cc20178074602/FLAGdf261cf87 [2021-10-08 18:13:23,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33a8f3d11/332d87162ec946578b5cc20178074602 [2021-10-08 18:13:23,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 18:13:23,921 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 18:13:23,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 18:13:23,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 18:13:23,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 18:13:23,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:13:23" (1/1) ... [2021-10-08 18:13:23,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ae0212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:23, skipping insertion in model container [2021-10-08 18:13:23,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:13:23" (1/1) ... [2021-10-08 18:13:23,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 18:13:23,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:13:24,139 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c[1871,1884] [2021-10-08 18:13:24,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:13:24,159 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:13:24,183 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c[1871,1884] [2021-10-08 18:13:24,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:13:24,204 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:13:24,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24 WrapperNode [2021-10-08 18:13:24,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:13:24,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:13:24,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:13:24,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:13:24,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:13:24,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:13:24,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:13:24,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:13:24,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:13:24,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:13:24,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:13:24,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:13:24,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (1/1) ... [2021-10-08 18:13:24,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:13:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:13:24,331 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) [2021-10-08 18:13:24,352 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 [2021-10-08 18:13:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:13:24,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:13:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:13:24,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:13:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:13:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:13:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:13:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:13:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:13:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:13:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:13:24,403 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 18:13:24,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:13:24,811 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 18:13:24,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:13:24 BoogieIcfgContainer [2021-10-08 18:13:24,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:13:24,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:13:24,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:13:24,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:13:24,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 06:13:23" (1/3) ... [2021-10-08 18:13:24,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39acd4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:13:24, skipping insertion in model container [2021-10-08 18:13:24,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:13:24" (2/3) ... [2021-10-08 18:13:24,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39acd4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:13:24, skipping insertion in model container [2021-10-08 18:13:24,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:13:24" (3/3) ... [2021-10-08 18:13:24,829 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2021-10-08 18:13:24,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:13:24,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 18:13:24,839 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:13:24,912 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,914 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,914 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,914 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,915 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,917 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,917 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,918 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,920 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,920 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,921 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,921 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,923 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,959 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,959 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:13:24,965 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 18:13:25,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:13:25,037 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 [2021-10-08 18:13:25,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 18:13:25,056 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:13:25,071 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-08 18:13:25,075 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-08 18:13:25,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 188 flow [2021-10-08 18:13:25,128 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2021-10-08 18:13:25,129 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 18:13:25,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-10-08 18:13:25,136 INFO L116 LiptonReduction]: Number of co-enabled transitions 496 [2021-10-08 18:13:32,828 INFO L131 LiptonReduction]: Checked pairs total: 578 [2021-10-08 18:13:32,829 INFO L133 LiptonReduction]: Total number of compositions: 84 [2021-10-08 18:13:32,842 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-08 18:13:32,853 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) [2021-10-08 18:13:32,856 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) [2021-10-08 18:13:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 18:13:32,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:32,862 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 18:13:32,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:32,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:32,870 INFO L82 PathProgramCache]: Analyzing trace with hash 329, now seen corresponding path program 1 times [2021-10-08 18:13:32,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:32,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089109049] [2021-10-08 18:13:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:32,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:32,888 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) [2021-10-08 18:13:32,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 18:13:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:32,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 18:13:32,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:32,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:32,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:32,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089109049] [2021-10-08 18:13:32,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089109049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:32,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:32,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 18:13:32,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865498570] [2021-10-08 18:13:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 18:13:32,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:32,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 18:13:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:13:32,982 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) [2021-10-08 18:13:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:32,996 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2021-10-08 18:13:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 18:13:32,998 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 [2021-10-08 18:13:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:33,008 INFO L225 Difference]: With dead ends: 36 [2021-10-08 18:13:33,008 INFO L226 Difference]: Without dead ends: 36 [2021-10-08 18:13:33,009 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 [2021-10-08 18:13:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-08 18:13:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-08 18:13:33,045 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) [2021-10-08 18:13:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2021-10-08 18:13:33,048 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2021-10-08 18:13:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:33,048 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2021-10-08 18:13:33,049 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) [2021-10-08 18:13:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2021-10-08 18:13:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:13:33,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:33,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:13:33,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 18:13:33,263 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 [2021-10-08 18:13:33,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:33,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:33,266 INFO L82 PathProgramCache]: Analyzing trace with hash 322030, now seen corresponding path program 1 times [2021-10-08 18:13:33,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:33,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102539967] [2021-10-08 18:13:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:33,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:33,270 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) [2021-10-08 18:13:33,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 18:13:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:33,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:13:33,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:33,416 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 18:13:33,418 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 [2021-10-08 18:13:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:33,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:33,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:33,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102539967] [2021-10-08 18:13:33,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102539967] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:33,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:33,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:13:33,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726406687] [2021-10-08 18:13:33,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:13:33,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:33,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:13:33,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:13:33,483 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) [2021-10-08 18:13:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:33,543 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2021-10-08 18:13:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:13:33,543 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 [2021-10-08 18:13:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:33,545 INFO L225 Difference]: With dead ends: 32 [2021-10-08 18:13:33,545 INFO L226 Difference]: Without dead ends: 32 [2021-10-08 18:13:33,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:13:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-08 18:13:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-08 18:13:33,558 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) [2021-10-08 18:13:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2021-10-08 18:13:33,560 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2021-10-08 18:13:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:33,566 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2021-10-08 18:13:33,566 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) [2021-10-08 18:13:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2021-10-08 18:13:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:13:33,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:33,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:13:33,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:33,779 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 [2021-10-08 18:13:33,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:33,782 INFO L82 PathProgramCache]: Analyzing trace with hash 322031, now seen corresponding path program 1 times [2021-10-08 18:13:33,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:33,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553540446] [2021-10-08 18:13:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:33,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:33,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:33,785 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) [2021-10-08 18:13:33,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 18:13:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:33,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:13:33,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:33,926 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 18:13:33,926 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 [2021-10-08 18:13:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:33,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:34,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:34,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553540446] [2021-10-08 18:13:34,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553540446] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:34,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:34,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:13:34,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574637290] [2021-10-08 18:13:34,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:13:34,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:34,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:13:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:13:34,058 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) [2021-10-08 18:13:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:34,082 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2021-10-08 18:13:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:13:34,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:13:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:34,084 INFO L225 Difference]: With dead ends: 28 [2021-10-08 18:13:34,084 INFO L226 Difference]: Without dead ends: 28 [2021-10-08 18:13:34,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:13:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-08 18:13:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-08 18:13:34,089 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) [2021-10-08 18:13:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2021-10-08 18:13:34,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2021-10-08 18:13:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:34,091 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2021-10-08 18:13:34,091 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) [2021-10-08 18:13:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2021-10-08 18:13:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:13:34,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:34,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:13:34,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:34,305 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 [2021-10-08 18:13:34,305 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:34,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:34,307 INFO L82 PathProgramCache]: Analyzing trace with hash 309476744, now seen corresponding path program 1 times [2021-10-08 18:13:34,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:34,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261087763] [2021-10-08 18:13:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:34,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:34,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:34,310 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) [2021-10-08 18:13:34,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 18:13:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:34,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:13:34,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:34,380 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 18:13:34,380 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 [2021-10-08 18:13:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:34,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:34,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:34,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261087763] [2021-10-08 18:13:34,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261087763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:34,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:34,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:13:34,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093442699] [2021-10-08 18:13:34,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:13:34,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:13:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:13:34,433 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) [2021-10-08 18:13:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:34,450 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2021-10-08 18:13:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:13:34,451 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 [2021-10-08 18:13:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:34,451 INFO L225 Difference]: With dead ends: 24 [2021-10-08 18:13:34,452 INFO L226 Difference]: Without dead ends: 24 [2021-10-08 18:13:34,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:13:34,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-08 18:13:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-08 18:13:34,456 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) [2021-10-08 18:13:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2021-10-08 18:13:34,457 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2021-10-08 18:13:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:34,457 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2021-10-08 18:13:34,457 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) [2021-10-08 18:13:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2021-10-08 18:13:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:13:34,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:34,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:13:34,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:34,670 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 [2021-10-08 18:13:34,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash 309476745, now seen corresponding path program 1 times [2021-10-08 18:13:34,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:34,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943012572] [2021-10-08 18:13:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:34,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:34,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:34,676 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) [2021-10-08 18:13:34,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 18:13:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:34,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:13:34,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:34,846 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 18:13:34,847 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 28 treesize of output 50 [2021-10-08 18:13:34,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49 [2021-10-08 18:13:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:35,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:35,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:35,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943012572] [2021-10-08 18:13:35,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943012572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:35,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:35,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:13:35,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851591034] [2021-10-08 18:13:35,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:13:35,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:13:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:13:35,149 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) [2021-10-08 18:13:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:35,167 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2021-10-08 18:13:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:13:35,168 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 [2021-10-08 18:13:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:35,169 INFO L225 Difference]: With dead ends: 20 [2021-10-08 18:13:35,169 INFO L226 Difference]: Without dead ends: 20 [2021-10-08 18:13:35,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:13:35,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-08 18:13:35,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-08 18:13:35,172 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) [2021-10-08 18:13:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2021-10-08 18:13:35,173 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2021-10-08 18:13:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:35,173 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2021-10-08 18:13:35,174 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) [2021-10-08 18:13:35,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2021-10-08 18:13:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 18:13:35,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:35,175 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:35,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:35,385 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 [2021-10-08 18:13:35,386 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)] === [2021-10-08 18:13:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash -923328175, now seen corresponding path program 1 times [2021-10-08 18:13:35,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:35,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074123006] [2021-10-08 18:13:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:35,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:35,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:35,390 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) [2021-10-08 18:13:35,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 18:13:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:35,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:13:35,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:35,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:35,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:35,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074123006] [2021-10-08 18:13:35,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074123006] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:35,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:35,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:13:35,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905730670] [2021-10-08 18:13:35,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:13:35,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:13:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:13:35,616 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:35,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:35,645 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2021-10-08 18:13:35,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:13:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 18:13:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:35,648 INFO L225 Difference]: With dead ends: 37 [2021-10-08 18:13:35,648 INFO L226 Difference]: Without dead ends: 32 [2021-10-08 18:13:35,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:13:35,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-08 18:13:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-08 18:13:35,659 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) [2021-10-08 18:13:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2021-10-08 18:13:35,661 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2021-10-08 18:13:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:35,661 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2021-10-08 18:13:35,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2021-10-08 18:13:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 18:13:35,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:35,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:35,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:35,875 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 [2021-10-08 18:13:35,876 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)] === [2021-10-08 18:13:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:35,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1568461469, now seen corresponding path program 1 times [2021-10-08 18:13:35,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:35,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512680551] [2021-10-08 18:13:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:35,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:35,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:35,880 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) [2021-10-08 18:13:35,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 18:13:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:35,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:13:35,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:36,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:36,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:36,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512680551] [2021-10-08 18:13:36,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512680551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:36,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:36,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-08 18:13:36,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964004178] [2021-10-08 18:13:36,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:13:36,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:36,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:13:36,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 18:13:36,083 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:36,166 INFO L93 Difference]: Finished difference Result 38 states and 77 transitions. [2021-10-08 18:13:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:13:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 18:13:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:36,170 INFO L225 Difference]: With dead ends: 38 [2021-10-08 18:13:36,170 INFO L226 Difference]: Without dead ends: 30 [2021-10-08 18:13:36,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:13:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-08 18:13:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-08 18:13:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 65 transitions. [2021-10-08 18:13:36,181 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 65 transitions. Word has length 12 [2021-10-08 18:13:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:36,181 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 65 transitions. [2021-10-08 18:13:36,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 65 transitions. [2021-10-08 18:13:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 18:13:36,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:36,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:36,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:36,385 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 [2021-10-08 18:13:36,386 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)] === [2021-10-08 18:13:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:36,387 INFO L82 PathProgramCache]: Analyzing trace with hash -741158495, now seen corresponding path program 2 times [2021-10-08 18:13:36,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:36,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907469298] [2021-10-08 18:13:36,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:13:36,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:36,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:36,390 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) [2021-10-08 18:13:36,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 18:13:36,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:13:36,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:36,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:13:36,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:36,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:36,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:36,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907469298] [2021-10-08 18:13:36,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907469298] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:13:36,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:13:36,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 18:13:36,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655308590] [2021-10-08 18:13:36,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:13:36,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:13:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:13:36,627 INFO L87 Difference]: Start difference. First operand 30 states and 65 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:36,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:36,677 INFO L93 Difference]: Finished difference Result 36 states and 69 transitions. [2021-10-08 18:13:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:13:36,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2021-10-08 18:13:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:36,679 INFO L225 Difference]: With dead ends: 36 [2021-10-08 18:13:36,679 INFO L226 Difference]: Without dead ends: 36 [2021-10-08 18:13:36,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:13:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-08 18:13:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-08 18:13:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 59 transitions. [2021-10-08 18:13:36,684 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 59 transitions. Word has length 12 [2021-10-08 18:13:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:36,684 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 59 transitions. [2021-10-08 18:13:36,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 59 transitions. [2021-10-08 18:13:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 18:13:36,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:36,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:36,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:36,896 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 [2021-10-08 18:13:36,897 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)] === [2021-10-08 18:13:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash 288896295, now seen corresponding path program 1 times [2021-10-08 18:13:36,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:36,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672775737] [2021-10-08 18:13:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:36,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:36,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:36,900 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) [2021-10-08 18:13:36,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 18:13:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:36,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 18:13:36,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:37,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:37,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:37,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672775737] [2021-10-08 18:13:37,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672775737] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:13:37,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:13:37,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-08 18:13:37,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748411067] [2021-10-08 18:13:37,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:13:37,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:13:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:13:37,125 INFO L87 Difference]: Start difference. First operand 28 states and 59 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:37,165 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2021-10-08 18:13:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:13:37,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 18:13:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:37,167 INFO L225 Difference]: With dead ends: 44 [2021-10-08 18:13:37,167 INFO L226 Difference]: Without dead ends: 44 [2021-10-08 18:13:37,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:13:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-08 18:13:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2021-10-08 18:13:37,171 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) [2021-10-08 18:13:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-08 18:13:37,172 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 12 [2021-10-08 18:13:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:37,172 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-08 18:13:37,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-08 18:13:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:13:37,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:37,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:37,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:37,374 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 [2021-10-08 18:13:37,375 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)] === [2021-10-08 18:13:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:37,376 INFO L82 PathProgramCache]: Analyzing trace with hash -44988425, now seen corresponding path program 1 times [2021-10-08 18:13:37,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:37,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848682388] [2021-10-08 18:13:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:13:37,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:37,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:37,379 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) [2021-10-08 18:13:37,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:13:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:37,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:37,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:37,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:13:37,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:37,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848682388] [2021-10-08 18:13:37,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848682388] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:37,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:37,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-08 18:13:37,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535174502] [2021-10-08 18:13:37,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:13:37,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:13:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:13:37,655 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:37,748 INFO L93 Difference]: Finished difference Result 65 states and 142 transitions. [2021-10-08 18:13:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:13:37,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:13:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:37,750 INFO L225 Difference]: With dead ends: 65 [2021-10-08 18:13:37,750 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 18:13:37,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:13:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 18:13:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-08 18:13:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.4651162790697674) internal successors, (106), 43 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 106 transitions. [2021-10-08 18:13:37,757 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 106 transitions. Word has length 13 [2021-10-08 18:13:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:37,757 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 106 transitions. [2021-10-08 18:13:37,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 106 transitions. [2021-10-08 18:13:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:13:37,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:37,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:37,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:37,971 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 [2021-10-08 18:13:37,971 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)] === [2021-10-08 18:13:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:37,972 INFO L82 PathProgramCache]: Analyzing trace with hash 791884203, now seen corresponding path program 2 times [2021-10-08 18:13:37,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:37,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540194435] [2021-10-08 18:13:37,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:13:37,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:37,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:37,975 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) [2021-10-08 18:13:37,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:13:38,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:13:38,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:38,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:38,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:13:38,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:38,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540194435] [2021-10-08 18:13:38,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540194435] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:38,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:38,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-08 18:13:38,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948898276] [2021-10-08 18:13:38,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:13:38,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:38,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:13:38,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:13:38,284 INFO L87 Difference]: Start difference. First operand 44 states and 106 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:38,375 INFO L93 Difference]: Finished difference Result 81 states and 187 transitions. [2021-10-08 18:13:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:13:38,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:13:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:38,377 INFO L225 Difference]: With dead ends: 81 [2021-10-08 18:13:38,377 INFO L226 Difference]: Without dead ends: 76 [2021-10-08 18:13:38,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:13:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-08 18:13:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2021-10-08 18:13:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 61 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 157 transitions. [2021-10-08 18:13:38,385 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 157 transitions. Word has length 13 [2021-10-08 18:13:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:38,386 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 157 transitions. [2021-10-08 18:13:38,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 157 transitions. [2021-10-08 18:13:38,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:13:38,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:38,387 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:38,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:38,588 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 [2021-10-08 18:13:38,588 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)] === [2021-10-08 18:13:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1805480153, now seen corresponding path program 3 times [2021-10-08 18:13:38,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:38,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549251246] [2021-10-08 18:13:38,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:13:38,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:38,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:38,592 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) [2021-10-08 18:13:38,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 18:13:38,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:13:38,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:38,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:13:38,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:38,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:39,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:39,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549251246] [2021-10-08 18:13:39,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549251246] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:39,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:39,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 18:13:39,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015449535] [2021-10-08 18:13:39,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:13:39,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:39,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:13:39,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:13:39,232 INFO L87 Difference]: Start difference. First operand 62 states and 157 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:40,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:40,225 INFO L93 Difference]: Finished difference Result 207 states and 449 transitions. [2021-10-08 18:13:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 18:13:40,226 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:13:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:40,228 INFO L225 Difference]: With dead ends: 207 [2021-10-08 18:13:40,228 INFO L226 Difference]: Without dead ends: 202 [2021-10-08 18:13:40,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 804.3ms TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:13:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-08 18:13:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 80. [2021-10-08 18:13:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.8354430379746836) internal successors, (224), 79 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 224 transitions. [2021-10-08 18:13:40,239 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 224 transitions. Word has length 14 [2021-10-08 18:13:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:40,240 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 224 transitions. [2021-10-08 18:13:40,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 224 transitions. [2021-10-08 18:13:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:13:40,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:40,242 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:40,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:40,454 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 [2021-10-08 18:13:40,455 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)] === [2021-10-08 18:13:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash 389514619, now seen corresponding path program 4 times [2021-10-08 18:13:40,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:40,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570085238] [2021-10-08 18:13:40,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:13:40,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:40,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:40,459 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) [2021-10-08 18:13:40,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 18:13:40,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:13:40,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:40,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:40,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:40,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:40,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:40,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570085238] [2021-10-08 18:13:40,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570085238] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:40,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:40,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:13:40,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923488044] [2021-10-08 18:13:40,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:40,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:40,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:40,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:40,892 INFO L87 Difference]: Start difference. First operand 80 states and 224 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:41,470 INFO L93 Difference]: Finished difference Result 138 states and 357 transitions. [2021-10-08 18:13:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:13:41,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 14 [2021-10-08 18:13:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:41,473 INFO L225 Difference]: With dead ends: 138 [2021-10-08 18:13:41,473 INFO L226 Difference]: Without dead ends: 132 [2021-10-08 18:13:41,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 473.2ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:13:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-08 18:13:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2021-10-08 18:13:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.968421052631579) internal successors, (282), 95 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 282 transitions. [2021-10-08 18:13:41,483 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 282 transitions. Word has length 14 [2021-10-08 18:13:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:41,483 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 282 transitions. [2021-10-08 18:13:41,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 282 transitions. [2021-10-08 18:13:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:13:41,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:41,485 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:41,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:41,698 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 [2021-10-08 18:13:41,699 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)] === [2021-10-08 18:13:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:41,700 INFO L82 PathProgramCache]: Analyzing trace with hash 371080593, now seen corresponding path program 5 times [2021-10-08 18:13:41,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:41,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862346176] [2021-10-08 18:13:41,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:13:41,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:41,703 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) [2021-10-08 18:13:41,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 18:13:41,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:13:41,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:41,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:41,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:41,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:42,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:42,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862346176] [2021-10-08 18:13:42,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862346176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:42,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:42,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:13:42,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785555426] [2021-10-08 18:13:42,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:42,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:42,119 INFO L87 Difference]: Start difference. First operand 96 states and 282 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:42,371 INFO L93 Difference]: Finished difference Result 112 states and 302 transitions. [2021-10-08 18:13:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:13:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 14 [2021-10-08 18:13:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:42,373 INFO L225 Difference]: With dead ends: 112 [2021-10-08 18:13:42,373 INFO L226 Difference]: Without dead ends: 108 [2021-10-08 18:13:42,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 194.3ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:13:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-08 18:13:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2021-10-08 18:13:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.888888888888889) internal successors, (286), 99 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 286 transitions. [2021-10-08 18:13:42,381 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 286 transitions. Word has length 14 [2021-10-08 18:13:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:42,382 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 286 transitions. [2021-10-08 18:13:42,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 286 transitions. [2021-10-08 18:13:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:13:42,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:42,383 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:42,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:42,599 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 [2021-10-08 18:13:42,600 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)] === [2021-10-08 18:13:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash -795359833, now seen corresponding path program 6 times [2021-10-08 18:13:42,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:42,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588960082] [2021-10-08 18:13:42,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:13:42,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:42,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:42,603 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) [2021-10-08 18:13:42,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 18:13:42,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:13:42,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:42,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:42,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:42,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:43,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:43,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588960082] [2021-10-08 18:13:43,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588960082] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:43,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:43,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:13:43,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010023078] [2021-10-08 18:13:43,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:43,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:43,075 INFO L87 Difference]: Start difference. First operand 100 states and 286 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:43,550 INFO L93 Difference]: Finished difference Result 222 states and 530 transitions. [2021-10-08 18:13:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:13:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 14 [2021-10-08 18:13:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:43,554 INFO L225 Difference]: With dead ends: 222 [2021-10-08 18:13:43,554 INFO L226 Difference]: Without dead ends: 222 [2021-10-08 18:13:43,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 356.4ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:13:43,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-08 18:13:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 124. [2021-10-08 18:13:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 3.008130081300813) internal successors, (370), 123 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 370 transitions. [2021-10-08 18:13:43,565 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 370 transitions. Word has length 14 [2021-10-08 18:13:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:43,565 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 370 transitions. [2021-10-08 18:13:43,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 370 transitions. [2021-10-08 18:13:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:13:43,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:43,567 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:43,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:43,780 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 [2021-10-08 18:13:43,780 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)] === [2021-10-08 18:13:43,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:43,781 INFO L82 PathProgramCache]: Analyzing trace with hash 63514697, now seen corresponding path program 7 times [2021-10-08 18:13:43,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:43,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378292780] [2021-10-08 18:13:43,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:13:43,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:43,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:43,784 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) [2021-10-08 18:13:43,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 18:13:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:43,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:43,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:44,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:44,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:44,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378292780] [2021-10-08 18:13:44,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378292780] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:44,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:44,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:13:44,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413619803] [2021-10-08 18:13:44,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:44,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:44,240 INFO L87 Difference]: Start difference. First operand 124 states and 370 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:44,760 INFO L93 Difference]: Finished difference Result 170 states and 434 transitions. [2021-10-08 18:13:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:13:44,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 14 [2021-10-08 18:13:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:44,769 INFO L225 Difference]: With dead ends: 170 [2021-10-08 18:13:44,769 INFO L226 Difference]: Without dead ends: 162 [2021-10-08 18:13:44,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 431.4ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:13:44,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-08 18:13:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 120. [2021-10-08 18:13:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.907563025210084) internal successors, (346), 119 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 346 transitions. [2021-10-08 18:13:44,778 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 346 transitions. Word has length 14 [2021-10-08 18:13:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:44,779 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 346 transitions. [2021-10-08 18:13:44,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 346 transitions. [2021-10-08 18:13:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:13:44,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:44,780 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:44,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:44,992 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 [2021-10-08 18:13:44,993 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)] === [2021-10-08 18:13:44,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:44,994 INFO L82 PathProgramCache]: Analyzing trace with hash 918821351, now seen corresponding path program 8 times [2021-10-08 18:13:44,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:44,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688176560] [2021-10-08 18:13:44,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:13:44,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:44,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:44,996 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) [2021-10-08 18:13:44,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 18:13:45,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:13:45,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:45,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:45,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:45,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688176560] [2021-10-08 18:13:45,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688176560] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:45,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:45,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:13:45,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316655535] [2021-10-08 18:13:45,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:45,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:45,463 INFO L87 Difference]: Start difference. First operand 120 states and 346 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:45,860 INFO L93 Difference]: Finished difference Result 164 states and 411 transitions. [2021-10-08 18:13:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:13:45,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 14 [2021-10-08 18:13:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:45,862 INFO L225 Difference]: With dead ends: 164 [2021-10-08 18:13:45,862 INFO L226 Difference]: Without dead ends: 154 [2021-10-08 18:13:45,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 360.8ms TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:13:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-08 18:13:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2021-10-08 18:13:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.832) internal successors, (354), 125 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 354 transitions. [2021-10-08 18:13:45,870 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 354 transitions. Word has length 14 [2021-10-08 18:13:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:45,870 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 354 transitions. [2021-10-08 18:13:45,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2021-10-08 18:13:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 354 transitions. [2021-10-08 18:13:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:13:45,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:45,872 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:45,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:46,084 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 [2021-10-08 18:13:46,084 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)] === [2021-10-08 18:13:46,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:46,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1071567585, now seen corresponding path program 9 times [2021-10-08 18:13:46,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:46,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217390798] [2021-10-08 18:13:46,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:13:46,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:46,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:46,088 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) [2021-10-08 18:13:46,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 18:13:46,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:13:46,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:46,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:46,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:46,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:46,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:46,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217390798] [2021-10-08 18:13:46,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217390798] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:46,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:46,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:13:46,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362457469] [2021-10-08 18:13:46,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:46,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:46,610 INFO L87 Difference]: Start difference. First operand 126 states and 354 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:46,784 INFO L93 Difference]: Finished difference Result 172 states and 454 transitions. [2021-10-08 18:13:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:13:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:13:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:46,789 INFO L225 Difference]: With dead ends: 172 [2021-10-08 18:13:46,789 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 18:13:46,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:13:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 18:13:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2021-10-08 18:13:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.8595041322314048) internal successors, (346), 121 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 346 transitions. [2021-10-08 18:13:46,801 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 346 transitions. Word has length 14 [2021-10-08 18:13:46,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:46,802 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 346 transitions. [2021-10-08 18:13:46,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 346 transitions. [2021-10-08 18:13:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:13:46,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:46,803 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:46,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:47,016 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 [2021-10-08 18:13:47,016 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)] === [2021-10-08 18:13:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:47,017 INFO L82 PathProgramCache]: Analyzing trace with hash -217486873, now seen corresponding path program 10 times [2021-10-08 18:13:47,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:47,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055507702] [2021-10-08 18:13:47,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:13:47,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:47,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:47,020 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) [2021-10-08 18:13:47,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 18:13:47,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:13:47,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:47,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:13:47,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:47,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:47,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:47,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055507702] [2021-10-08 18:13:47,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055507702] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:47,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:47,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:13:47,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523259173] [2021-10-08 18:13:47,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:47,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:47,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:47,492 INFO L87 Difference]: Start difference. First operand 122 states and 346 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:47,620 INFO L93 Difference]: Finished difference Result 192 states and 530 transitions. [2021-10-08 18:13:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:13:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:13:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:47,623 INFO L225 Difference]: With dead ends: 192 [2021-10-08 18:13:47,623 INFO L226 Difference]: Without dead ends: 192 [2021-10-08 18:13:47,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:13:47,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-08 18:13:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 106. [2021-10-08 18:13:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.8666666666666667) internal successors, (301), 105 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 301 transitions. [2021-10-08 18:13:47,630 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 301 transitions. Word has length 15 [2021-10-08 18:13:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:47,631 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 301 transitions. [2021-10-08 18:13:47,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 301 transitions. [2021-10-08 18:13:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:13:47,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:47,632 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:47,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:47,845 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 [2021-10-08 18:13:47,846 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)] === [2021-10-08 18:13:47,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:47,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1964068431, now seen corresponding path program 11 times [2021-10-08 18:13:47,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:47,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212108464] [2021-10-08 18:13:47,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:13:47,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:47,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:47,850 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) [2021-10-08 18:13:47,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 18:13:48,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:13:48,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:48,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:13:48,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:48,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:13:48,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:48,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212108464] [2021-10-08 18:13:48,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212108464] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:48,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:48,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-08 18:13:48,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584254465] [2021-10-08 18:13:48,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:48,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:48,350 INFO L87 Difference]: Start difference. First operand 106 states and 301 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2021-10-08 18:13:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:48,657 INFO L93 Difference]: Finished difference Result 187 states and 503 transitions. [2021-10-08 18:13:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:13:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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 15 [2021-10-08 18:13:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:48,659 INFO L225 Difference]: With dead ends: 187 [2021-10-08 18:13:48,659 INFO L226 Difference]: Without dead ends: 182 [2021-10-08 18:13:48,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 172.4ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:13:48,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-08 18:13:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2021-10-08 18:13:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.9925925925925925) internal successors, (404), 135 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 404 transitions. [2021-10-08 18:13:48,667 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 404 transitions. Word has length 15 [2021-10-08 18:13:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:48,668 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 404 transitions. [2021-10-08 18:13:48,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2021-10-08 18:13:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 404 transitions. [2021-10-08 18:13:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:13:48,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:48,669 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:48,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:48,870 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 [2021-10-08 18:13:48,870 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)] === [2021-10-08 18:13:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash -715109583, now seen corresponding path program 12 times [2021-10-08 18:13:48,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:48,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37852345] [2021-10-08 18:13:48,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:13:48,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:48,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:48,874 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) [2021-10-08 18:13:48,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 18:13:49,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:13:49,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:49,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:13:49,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:49,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:13:49,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:49,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37852345] [2021-10-08 18:13:49,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37852345] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:49,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:49,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-08 18:13:49,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168066769] [2021-10-08 18:13:49,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:13:49,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:49,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:13:49,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:13:49,345 INFO L87 Difference]: Start difference. First operand 136 states and 404 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2021-10-08 18:13:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:49,593 INFO L93 Difference]: Finished difference Result 199 states and 543 transitions. [2021-10-08 18:13:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:13:49,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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 15 [2021-10-08 18:13:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:49,595 INFO L225 Difference]: With dead ends: 199 [2021-10-08 18:13:49,595 INFO L226 Difference]: Without dead ends: 194 [2021-10-08 18:13:49,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 164.0ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:13:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-08 18:13:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2021-10-08 18:13:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.9754601226993866) internal successors, (485), 163 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 485 transitions. [2021-10-08 18:13:49,604 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 485 transitions. Word has length 15 [2021-10-08 18:13:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:49,604 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 485 transitions. [2021-10-08 18:13:49,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2021-10-08 18:13:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 485 transitions. [2021-10-08 18:13:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:13:49,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:49,606 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:49,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:49,817 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 [2021-10-08 18:13:49,817 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)] === [2021-10-08 18:13:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:49,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1705342561, now seen corresponding path program 13 times [2021-10-08 18:13:49,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:49,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480948554] [2021-10-08 18:13:49,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:13:49,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:49,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:49,821 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) [2021-10-08 18:13:49,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 18:13:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:13:49,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:13:49,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:50,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:50,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:50,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480948554] [2021-10-08 18:13:50,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480948554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:50,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:50,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:13:50,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495658524] [2021-10-08 18:13:50,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:13:50,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:13:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:13:50,668 INFO L87 Difference]: Start difference. First operand 164 states and 485 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) [2021-10-08 18:13:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:51,490 INFO L93 Difference]: Finished difference Result 234 states and 604 transitions. [2021-10-08 18:13:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:13:51,491 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 [2021-10-08 18:13:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:51,493 INFO L225 Difference]: With dead ends: 234 [2021-10-08 18:13:51,493 INFO L226 Difference]: Without dead ends: 234 [2021-10-08 18:13:51,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 891.0ms TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:13:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-08 18:13:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 146. [2021-10-08 18:13:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.8551724137931034) internal successors, (414), 145 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 414 transitions. [2021-10-08 18:13:51,501 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 414 transitions. Word has length 16 [2021-10-08 18:13:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:51,502 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 414 transitions. [2021-10-08 18:13:51,502 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) [2021-10-08 18:13:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 414 transitions. [2021-10-08 18:13:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:13:51,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:51,503 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:51,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:51,716 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 [2021-10-08 18:13:51,716 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)] === [2021-10-08 18:13:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash -239816297, now seen corresponding path program 14 times [2021-10-08 18:13:51,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:51,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579477135] [2021-10-08 18:13:51,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:13:51,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:51,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:51,721 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) [2021-10-08 18:13:51,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 18:13:51,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:13:51,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:51,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:13:51,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:52,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:52,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:52,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579477135] [2021-10-08 18:13:52,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579477135] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:52,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:52,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:13:52,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021547117] [2021-10-08 18:13:52,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:13:52,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:13:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:13:52,471 INFO L87 Difference]: Start difference. First operand 146 states and 414 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) [2021-10-08 18:13:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:54,010 INFO L93 Difference]: Finished difference Result 338 states and 884 transitions. [2021-10-08 18:13:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:13:54,020 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 [2021-10-08 18:13:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:54,023 INFO L225 Difference]: With dead ends: 338 [2021-10-08 18:13:54,023 INFO L226 Difference]: Without dead ends: 328 [2021-10-08 18:13:54,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1464.7ms TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2021-10-08 18:13:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-08 18:13:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 190. [2021-10-08 18:13:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 3.0899470899470898) internal successors, (584), 189 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 584 transitions. [2021-10-08 18:13:54,036 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 584 transitions. Word has length 16 [2021-10-08 18:13:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:54,036 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 584 transitions. [2021-10-08 18:13:54,036 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) [2021-10-08 18:13:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 584 transitions. [2021-10-08 18:13:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:13:54,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:54,037 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:54,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:54,250 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 [2021-10-08 18:13:54,250 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)] === [2021-10-08 18:13:54,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:54,252 INFO L82 PathProgramCache]: Analyzing trace with hash -811271103, now seen corresponding path program 15 times [2021-10-08 18:13:54,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:54,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340776457] [2021-10-08 18:13:54,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:13:54,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:54,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:54,254 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) [2021-10-08 18:13:54,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 18:13:54,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:13:54,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:54,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:13:54,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:13:54,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:13:54,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:54,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340776457] [2021-10-08 18:13:54,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340776457] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:13:54,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:13:54,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2021-10-08 18:13:54,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682027367] [2021-10-08 18:13:54,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:13:54,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:13:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:13:54,928 INFO L87 Difference]: Start difference. First operand 190 states and 584 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:54,987 INFO L93 Difference]: Finished difference Result 241 states and 687 transitions. [2021-10-08 18:13:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:13:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:13:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:54,991 INFO L225 Difference]: With dead ends: 241 [2021-10-08 18:13:54,991 INFO L226 Difference]: Without dead ends: 220 [2021-10-08 18:13:54,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 209.1ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:13:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-08 18:13:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 122. [2021-10-08 18:13:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.644628099173554) internal successors, (320), 121 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 320 transitions. [2021-10-08 18:13:54,999 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 320 transitions. Word has length 16 [2021-10-08 18:13:54,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:54,999 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 320 transitions. [2021-10-08 18:13:54,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 320 transitions. [2021-10-08 18:13:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:13:55,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:55,001 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:55,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:55,213 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 [2021-10-08 18:13:55,214 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)] === [2021-10-08 18:13:55,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:55,215 INFO L82 PathProgramCache]: Analyzing trace with hash -330545567, now seen corresponding path program 16 times [2021-10-08 18:13:55,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:55,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217536332] [2021-10-08 18:13:55,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:13:55,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:55,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:55,217 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) [2021-10-08 18:13:55,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 18:13:55,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:13:55,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:55,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:13:55,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:55,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:55,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:55,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217536332] [2021-10-08 18:13:55,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217536332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:55,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:55,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:13:55,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592200621] [2021-10-08 18:13:55,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:13:55,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:55,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:13:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:13:55,974 INFO L87 Difference]: Start difference. First operand 122 states and 320 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) [2021-10-08 18:13:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:57,351 INFO L93 Difference]: Finished difference Result 258 states and 624 transitions. [2021-10-08 18:13:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:13:57,352 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 [2021-10-08 18:13:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:57,356 INFO L225 Difference]: With dead ends: 258 [2021-10-08 18:13:57,356 INFO L226 Difference]: Without dead ends: 250 [2021-10-08 18:13:57,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1344.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-10-08 18:13:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-08 18:13:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 140. [2021-10-08 18:13:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.7697841726618706) internal successors, (385), 139 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 385 transitions. [2021-10-08 18:13:57,364 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 385 transitions. Word has length 16 [2021-10-08 18:13:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:57,365 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 385 transitions. [2021-10-08 18:13:57,365 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) [2021-10-08 18:13:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 385 transitions. [2021-10-08 18:13:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:13:57,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:57,366 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:57,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:57,578 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 [2021-10-08 18:13:57,579 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)] === [2021-10-08 18:13:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:57,580 INFO L82 PathProgramCache]: Analyzing trace with hash 528328963, now seen corresponding path program 17 times [2021-10-08 18:13:57,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:57,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426021210] [2021-10-08 18:13:57,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:13:57,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:57,583 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) [2021-10-08 18:13:57,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 18:13:57,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:13:57,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:57,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:13:57,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:58,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:58,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:58,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426021210] [2021-10-08 18:13:58,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426021210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:58,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:58,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:13:58,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944110250] [2021-10-08 18:13:58,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:13:58,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:13:58,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:13:58,309 INFO L87 Difference]: Start difference. First operand 140 states and 385 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) [2021-10-08 18:13:59,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:59,629 INFO L93 Difference]: Finished difference Result 226 states and 565 transitions. [2021-10-08 18:13:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 18:13:59,630 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 [2021-10-08 18:13:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:59,632 INFO L225 Difference]: With dead ends: 226 [2021-10-08 18:13:59,633 INFO L226 Difference]: Without dead ends: 222 [2021-10-08 18:13:59,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1271.0ms TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2021-10-08 18:13:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-08 18:13:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 138. [2021-10-08 18:13:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.72992700729927) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 374 transitions. [2021-10-08 18:13:59,641 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 374 transitions. Word has length 16 [2021-10-08 18:13:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:59,641 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 374 transitions. [2021-10-08 18:13:59,641 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) [2021-10-08 18:13:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 374 transitions. [2021-10-08 18:13:59,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:13:59,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:59,642 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:59,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:59,843 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 [2021-10-08 18:13:59,843 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)] === [2021-10-08 18:13:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1383635617, now seen corresponding path program 18 times [2021-10-08 18:13:59,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:59,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158075350] [2021-10-08 18:13:59,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:13:59,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:59,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:59,847 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) [2021-10-08 18:13:59,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 18:14:00,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:14:00,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:00,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:14:00,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:00,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:00,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:00,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158075350] [2021-10-08 18:14:00,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158075350] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:00,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:00,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:00,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263404880] [2021-10-08 18:14:00,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:00,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:00,644 INFO L87 Difference]: Start difference. First operand 138 states and 374 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) [2021-10-08 18:14:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:01,518 INFO L93 Difference]: Finished difference Result 208 states and 514 transitions. [2021-10-08 18:14:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:14:01,519 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 [2021-10-08 18:14:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:01,520 INFO L225 Difference]: With dead ends: 208 [2021-10-08 18:14:01,521 INFO L226 Difference]: Without dead ends: 200 [2021-10-08 18:14:01,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 866.1ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-10-08 18:14:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-08 18:14:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 134. [2021-10-08 18:14:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.6766917293233083) internal successors, (356), 133 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 356 transitions. [2021-10-08 18:14:01,527 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 356 transitions. Word has length 16 [2021-10-08 18:14:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:01,528 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 356 transitions. [2021-10-08 18:14:01,528 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) [2021-10-08 18:14:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 356 transitions. [2021-10-08 18:14:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:14:01,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:01,529 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:01,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-08 18:14:01,741 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 [2021-10-08 18:14:01,742 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)] === [2021-10-08 18:14:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:01,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1536381851, now seen corresponding path program 19 times [2021-10-08 18:14:01,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:01,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393195839] [2021-10-08 18:14:01,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:14:01,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:01,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:01,746 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) [2021-10-08 18:14:01,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 18:14:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:01,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:14:01,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:02,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:02,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:02,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393195839] [2021-10-08 18:14:02,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393195839] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:02,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:02,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:02,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758509720] [2021-10-08 18:14:02,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:02,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:02,538 INFO L87 Difference]: Start difference. First operand 134 states and 356 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) [2021-10-08 18:14:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:03,972 INFO L93 Difference]: Finished difference Result 288 states and 699 transitions. [2021-10-08 18:14:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:14:03,973 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 16 [2021-10-08 18:14:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:03,977 INFO L225 Difference]: With dead ends: 288 [2021-10-08 18:14:03,977 INFO L226 Difference]: Without dead ends: 288 [2021-10-08 18:14:03,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1280.7ms TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:14:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-08 18:14:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 148. [2021-10-08 18:14:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.7551020408163267) internal successors, (405), 147 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 405 transitions. [2021-10-08 18:14:03,985 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 405 transitions. Word has length 16 [2021-10-08 18:14:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:03,985 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 405 transitions. [2021-10-08 18:14:03,985 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) [2021-10-08 18:14:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 405 transitions. [2021-10-08 18:14:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:14:03,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:03,986 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:03,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:04,199 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 [2021-10-08 18:14:04,199 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)] === [2021-10-08 18:14:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:04,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1941608877, now seen corresponding path program 20 times [2021-10-08 18:14:04,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:04,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049975061] [2021-10-08 18:14:04,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:04,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:04,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:04,203 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) [2021-10-08 18:14:04,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 18:14:04,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:04,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:04,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:14:04,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:04,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:04,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:04,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049975061] [2021-10-08 18:14:04,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049975061] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:04,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:04,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:04,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100299006] [2021-10-08 18:14:04,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:04,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:04,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:04,996 INFO L87 Difference]: Start difference. First operand 148 states and 405 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) [2021-10-08 18:14:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:06,609 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2021-10-08 18:14:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 18:14:06,610 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 [2021-10-08 18:14:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:06,611 INFO L225 Difference]: With dead ends: 242 [2021-10-08 18:14:06,612 INFO L226 Difference]: Without dead ends: 224 [2021-10-08 18:14:06,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1435.0ms TimeCoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:14:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-08 18:14:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 150. [2021-10-08 18:14:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.6912751677852347) internal successors, (401), 149 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 401 transitions. [2021-10-08 18:14:06,619 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 401 transitions. Word has length 16 [2021-10-08 18:14:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:06,619 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 401 transitions. [2021-10-08 18:14:06,619 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) [2021-10-08 18:14:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 401 transitions. [2021-10-08 18:14:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:14:06,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:06,620 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:06,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:06,833 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 [2021-10-08 18:14:06,834 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)] === [2021-10-08 18:14:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash -267526943, now seen corresponding path program 21 times [2021-10-08 18:14:06,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:06,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962261017] [2021-10-08 18:14:06,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:06,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:06,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:06,838 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) [2021-10-08 18:14:06,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 18:14:07,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:14:07,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:07,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:14:07,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:14:07,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:14:07,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:07,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962261017] [2021-10-08 18:14:07,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962261017] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:07,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:07,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2021-10-08 18:14:07,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430836984] [2021-10-08 18:14:07,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:14:07,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:14:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:07,607 INFO L87 Difference]: Start difference. First operand 150 states and 401 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:07,718 INFO L93 Difference]: Finished difference Result 251 states and 624 transitions. [2021-10-08 18:14:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:14:07,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:14:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:07,721 INFO L225 Difference]: With dead ends: 251 [2021-10-08 18:14:07,721 INFO L226 Difference]: Without dead ends: 210 [2021-10-08 18:14:07,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 216.3ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-08 18:14:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 180. [2021-10-08 18:14:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.5195530726256985) internal successors, (451), 179 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 451 transitions. [2021-10-08 18:14:07,729 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 451 transitions. Word has length 16 [2021-10-08 18:14:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:07,730 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 451 transitions. [2021-10-08 18:14:07,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 451 transitions. [2021-10-08 18:14:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:14:07,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:07,733 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:07,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:07,934 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 [2021-10-08 18:14:07,934 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)] === [2021-10-08 18:14:07,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:07,935 INFO L82 PathProgramCache]: Analyzing trace with hash 61135057, now seen corresponding path program 22 times [2021-10-08 18:14:07,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:07,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723956062] [2021-10-08 18:14:07,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:14:07,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:07,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:07,938 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) [2021-10-08 18:14:07,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 18:14:08,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:14:08,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:14:08,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:08,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:08,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:08,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723956062] [2021-10-08 18:14:08,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723956062] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:08,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:08,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:08,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139184058] [2021-10-08 18:14:08,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:08,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:08,739 INFO L87 Difference]: Start difference. First operand 180 states and 451 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) [2021-10-08 18:14:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:10,236 INFO L93 Difference]: Finished difference Result 356 states and 853 transitions. [2021-10-08 18:14:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 18:14:10,239 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 [2021-10-08 18:14:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:10,242 INFO L225 Difference]: With dead ends: 356 [2021-10-08 18:14:10,242 INFO L226 Difference]: Without dead ends: 350 [2021-10-08 18:14:10,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1389.8ms TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:14:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-08 18:14:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 204. [2021-10-08 18:14:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.5566502463054186) internal successors, (519), 203 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 519 transitions. [2021-10-08 18:14:10,251 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 519 transitions. Word has length 16 [2021-10-08 18:14:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:10,251 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 519 transitions. [2021-10-08 18:14:10,252 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) [2021-10-08 18:14:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 519 transitions. [2021-10-08 18:14:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:14:10,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:10,253 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:10,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-08 18:14:10,466 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 [2021-10-08 18:14:10,466 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)] === [2021-10-08 18:14:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:10,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2103610557, now seen corresponding path program 23 times [2021-10-08 18:14:10,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:10,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364664995] [2021-10-08 18:14:10,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:14:10,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:10,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:10,469 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) [2021-10-08 18:14:10,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 18:14:10,693 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:14:10,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:10,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:14:10,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:10,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:11,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:11,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364664995] [2021-10-08 18:14:11,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364664995] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:11,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:11,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:11,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968600806] [2021-10-08 18:14:11,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:11,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:11,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:11,207 INFO L87 Difference]: Start difference. First operand 204 states and 519 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) [2021-10-08 18:14:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:11,962 INFO L93 Difference]: Finished difference Result 302 states and 720 transitions. [2021-10-08 18:14:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:14:11,963 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 [2021-10-08 18:14:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:11,965 INFO L225 Difference]: With dead ends: 302 [2021-10-08 18:14:11,966 INFO L226 Difference]: Without dead ends: 276 [2021-10-08 18:14:11,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 761.8ms TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:14:11,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-08 18:14:11,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 210. [2021-10-08 18:14:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.54066985645933) internal successors, (531), 209 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 531 transitions. [2021-10-08 18:14:11,974 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 531 transitions. Word has length 16 [2021-10-08 18:14:11,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:11,974 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 531 transitions. [2021-10-08 18:14:11,974 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) [2021-10-08 18:14:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 531 transitions. [2021-10-08 18:14:11,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:14:11,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:11,975 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:11,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:12,188 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 [2021-10-08 18:14:12,189 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)] === [2021-10-08 18:14:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2101310167, now seen corresponding path program 24 times [2021-10-08 18:14:12,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:12,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123545065] [2021-10-08 18:14:12,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:14:12,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:12,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:12,192 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) [2021-10-08 18:14:12,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 18:14:12,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:14:12,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:12,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:14:12,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:12,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:13,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:13,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123545065] [2021-10-08 18:14:13,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123545065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:13,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:13,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:13,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597214441] [2021-10-08 18:14:13,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:13,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:13,012 INFO L87 Difference]: Start difference. First operand 210 states and 531 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) [2021-10-08 18:14:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:13,343 INFO L93 Difference]: Finished difference Result 256 states and 637 transitions. [2021-10-08 18:14:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:14:13,344 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 [2021-10-08 18:14:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:13,345 INFO L225 Difference]: With dead ends: 256 [2021-10-08 18:14:13,345 INFO L226 Difference]: Without dead ends: 256 [2021-10-08 18:14:13,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 431.2ms TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-08 18:14:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2021-10-08 18:14:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.5270935960591134) internal successors, (513), 203 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 513 transitions. [2021-10-08 18:14:13,353 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 513 transitions. Word has length 16 [2021-10-08 18:14:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:13,353 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 513 transitions. [2021-10-08 18:14:13,353 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) [2021-10-08 18:14:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 513 transitions. [2021-10-08 18:14:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:14:13,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:13,354 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:13,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-08 18:14:13,563 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 [2021-10-08 18:14:13,564 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)] === [2021-10-08 18:14:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1512867017, now seen corresponding path program 25 times [2021-10-08 18:14:13,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:13,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491634411] [2021-10-08 18:14:13,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:14:13,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:13,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:13,567 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) [2021-10-08 18:14:13,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 18:14:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:13,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:13,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:14,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:14:14,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:14,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491634411] [2021-10-08 18:14:14,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491634411] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:14,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:14,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-08 18:14:14,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857285128] [2021-10-08 18:14:14,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:14:14,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:14:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:14,234 INFO L87 Difference]: Start difference. First operand 204 states and 513 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:14,651 INFO L93 Difference]: Finished difference Result 289 states and 699 transitions. [2021-10-08 18:14:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:14:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:14:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:14,654 INFO L225 Difference]: With dead ends: 289 [2021-10-08 18:14:14,654 INFO L226 Difference]: Without dead ends: 282 [2021-10-08 18:14:14,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 302.9ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-08 18:14:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 242. [2021-10-08 18:14:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.5726141078838176) internal successors, (620), 241 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 620 transitions. [2021-10-08 18:14:14,663 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 620 transitions. Word has length 17 [2021-10-08 18:14:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:14,663 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 620 transitions. [2021-10-08 18:14:14,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 620 transitions. [2021-10-08 18:14:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:14:14,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:14,665 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:14,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-08 18:14:14,876 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 [2021-10-08 18:14:14,877 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)] === [2021-10-08 18:14:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:14,878 INFO L82 PathProgramCache]: Analyzing trace with hash 901626459, now seen corresponding path program 26 times [2021-10-08 18:14:14,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:14,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348696262] [2021-10-08 18:14:14,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:14,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:14,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:14,881 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) [2021-10-08 18:14:14,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 18:14:15,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:15,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:15,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:15,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:15,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:14:15,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:15,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348696262] [2021-10-08 18:14:15,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348696262] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:15,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:15,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-08 18:14:15,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035365823] [2021-10-08 18:14:15,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:14:15,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:15,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:14:15,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:15,541 INFO L87 Difference]: Start difference. First operand 242 states and 620 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:16,040 INFO L93 Difference]: Finished difference Result 361 states and 909 transitions. [2021-10-08 18:14:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:14:16,041 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:14:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:16,045 INFO L225 Difference]: With dead ends: 361 [2021-10-08 18:14:16,045 INFO L226 Difference]: Without dead ends: 354 [2021-10-08 18:14:16,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 296.1ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-08 18:14:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 304. [2021-10-08 18:14:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 2.6435643564356437) internal successors, (801), 303 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 801 transitions. [2021-10-08 18:14:16,056 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 801 transitions. Word has length 17 [2021-10-08 18:14:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:16,057 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 801 transitions. [2021-10-08 18:14:16,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 801 transitions. [2021-10-08 18:14:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:14:16,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:16,058 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:16,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:16,272 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 [2021-10-08 18:14:16,272 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)] === [2021-10-08 18:14:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1137892775, now seen corresponding path program 27 times [2021-10-08 18:14:16,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:16,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831984945] [2021-10-08 18:14:16,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:16,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:16,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:16,278 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) [2021-10-08 18:14:16,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 18:14:16,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:14:16,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:16,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:14:16,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:14:16,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:14:16,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:16,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831984945] [2021-10-08 18:14:16,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831984945] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:16,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:16,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-08 18:14:16,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454733566] [2021-10-08 18:14:16,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:14:16,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:14:16,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:14:16,955 INFO L87 Difference]: Start difference. First operand 304 states and 801 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2021-10-08 18:14:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:17,026 INFO L93 Difference]: Finished difference Result 357 states and 919 transitions. [2021-10-08 18:14:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:14:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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 17 [2021-10-08 18:14:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:17,028 INFO L225 Difference]: With dead ends: 357 [2021-10-08 18:14:17,028 INFO L226 Difference]: Without dead ends: 190 [2021-10-08 18:14:17,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 138.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:14:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-08 18:14:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 150. [2021-10-08 18:14:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.120805369127517) internal successors, (316), 149 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 316 transitions. [2021-10-08 18:14:17,033 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 316 transitions. Word has length 17 [2021-10-08 18:14:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:17,034 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 316 transitions. [2021-10-08 18:14:17,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2021-10-08 18:14:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 316 transitions. [2021-10-08 18:14:17,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:14:17,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:17,035 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:17,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 18:14:17,248 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 [2021-10-08 18:14:17,249 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)] === [2021-10-08 18:14:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1771555337, now seen corresponding path program 28 times [2021-10-08 18:14:17,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:17,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684744023] [2021-10-08 18:14:17,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:14:17,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:17,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:17,253 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) [2021-10-08 18:14:17,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 18:14:17,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:14:17,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:17,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:17,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:17,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:14:17,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:17,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684744023] [2021-10-08 18:14:17,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684744023] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:17,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:17,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-08 18:14:17,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963121583] [2021-10-08 18:14:17,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:14:17,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:14:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:17,912 INFO L87 Difference]: Start difference. First operand 150 states and 316 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:18,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:18,235 INFO L93 Difference]: Finished difference Result 205 states and 409 transitions. [2021-10-08 18:14:18,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 18:14:18,236 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:14:18,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:18,237 INFO L225 Difference]: With dead ends: 205 [2021-10-08 18:14:18,237 INFO L226 Difference]: Without dead ends: 200 [2021-10-08 18:14:18,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 306.1ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-08 18:14:18,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 162. [2021-10-08 18:14:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.130434782608696) internal successors, (343), 161 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 343 transitions. [2021-10-08 18:14:18,242 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 343 transitions. Word has length 17 [2021-10-08 18:14:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:18,242 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 343 transitions. [2021-10-08 18:14:18,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 343 transitions. [2021-10-08 18:14:18,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:14:18,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:18,243 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:18,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-08 18:14:18,456 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 [2021-10-08 18:14:18,457 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)] === [2021-10-08 18:14:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash -738370703, now seen corresponding path program 29 times [2021-10-08 18:14:18,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:18,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533033817] [2021-10-08 18:14:18,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:14:18,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:18,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:18,461 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) [2021-10-08 18:14:18,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 18:14:18,732 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:14:18,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:18,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:14:18,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:14:19,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:14:19,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:19,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533033817] [2021-10-08 18:14:19,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533033817] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:19,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:19,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:19,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7442464] [2021-10-08 18:14:19,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:14:19,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:14:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:19,319 INFO L87 Difference]: Start difference. First operand 162 states and 343 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:20,133 INFO L93 Difference]: Finished difference Result 230 states and 467 transitions. [2021-10-08 18:14:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:14:20,133 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:14:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:20,135 INFO L225 Difference]: With dead ends: 230 [2021-10-08 18:14:20,135 INFO L226 Difference]: Without dead ends: 230 [2021-10-08 18:14:20,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 803.4ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:14:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-08 18:14:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 162. [2021-10-08 18:14:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.1055900621118013) internal successors, (339), 161 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 339 transitions. [2021-10-08 18:14:20,141 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 339 transitions. Word has length 17 [2021-10-08 18:14:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:20,141 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 339 transitions. [2021-10-08 18:14:20,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 339 transitions. [2021-10-08 18:14:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:14:20,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:20,142 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:20,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:20,355 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 [2021-10-08 18:14:20,355 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)] === [2021-10-08 18:14:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2002435661, now seen corresponding path program 30 times [2021-10-08 18:14:20,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:20,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036507446] [2021-10-08 18:14:20,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:14:20,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:20,359 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) [2021-10-08 18:14:20,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 18:14:20,670 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:14:20,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:20,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:20,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:20,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:21,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036507446] [2021-10-08 18:14:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036507446] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:21,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:21,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-08 18:14:21,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721058428] [2021-10-08 18:14:21,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:14:21,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:14:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:21,088 INFO L87 Difference]: Start difference. First operand 162 states and 339 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:21,352 INFO L93 Difference]: Finished difference Result 189 states and 388 transitions. [2021-10-08 18:14:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:14:21,353 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:14:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:21,354 INFO L225 Difference]: With dead ends: 189 [2021-10-08 18:14:21,354 INFO L226 Difference]: Without dead ends: 184 [2021-10-08 18:14:21,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 305.8ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-08 18:14:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 172. [2021-10-08 18:14:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.0994152046783627) internal successors, (359), 171 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 359 transitions. [2021-10-08 18:14:21,359 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 359 transitions. Word has length 17 [2021-10-08 18:14:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:21,359 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 359 transitions. [2021-10-08 18:14:21,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 359 transitions. [2021-10-08 18:14:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:14:21,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:21,360 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:21,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:21,569 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 [2021-10-08 18:14:21,570 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)] === [2021-10-08 18:14:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:21,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1314035097, now seen corresponding path program 31 times [2021-10-08 18:14:21,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:21,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219001029] [2021-10-08 18:14:21,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:14:21,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:21,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:21,573 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) [2021-10-08 18:14:21,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 18:14:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:21,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:14:21,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:22,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:22,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:22,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219001029] [2021-10-08 18:14:22,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219001029] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:22,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:22,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:14:22,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162746140] [2021-10-08 18:14:22,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:14:22,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:14:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:22,625 INFO L87 Difference]: Start difference. First operand 172 states and 359 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:23,108 INFO L93 Difference]: Finished difference Result 210 states and 421 transitions. [2021-10-08 18:14:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:14:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:14:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:23,111 INFO L225 Difference]: With dead ends: 210 [2021-10-08 18:14:23,111 INFO L226 Difference]: Without dead ends: 208 [2021-10-08 18:14:23,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 673.8ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:14:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-08 18:14:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 170. [2021-10-08 18:14:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.0828402366863905) internal successors, (352), 169 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 352 transitions. [2021-10-08 18:14:23,118 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 352 transitions. Word has length 18 [2021-10-08 18:14:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:23,118 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 352 transitions. [2021-10-08 18:14:23,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 352 transitions. [2021-10-08 18:14:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:14:23,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:23,119 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:23,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:23,332 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 [2021-10-08 18:14:23,332 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)] === [2021-10-08 18:14:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:23,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1801851169, now seen corresponding path program 32 times [2021-10-08 18:14:23,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:23,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3328804] [2021-10-08 18:14:23,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:23,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:23,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:23,336 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) [2021-10-08 18:14:23,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 18:14:23,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:23,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:23,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:14:23,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:24,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:24,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:24,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3328804] [2021-10-08 18:14:24,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3328804] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:24,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:24,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:14:24,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43667004] [2021-10-08 18:14:24,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:14:24,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:24,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:14:24,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:24,559 INFO L87 Difference]: Start difference. First operand 170 states and 352 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:26,717 INFO L93 Difference]: Finished difference Result 294 states and 581 transitions. [2021-10-08 18:14:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 18:14:26,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:14:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:26,720 INFO L225 Difference]: With dead ends: 294 [2021-10-08 18:14:26,720 INFO L226 Difference]: Without dead ends: 294 [2021-10-08 18:14:26,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2069.0ms TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 18:14:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-08 18:14:26,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 166. [2021-10-08 18:14:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.084848484848485) internal successors, (344), 165 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 344 transitions. [2021-10-08 18:14:26,724 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 344 transitions. Word has length 18 [2021-10-08 18:14:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:26,725 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 344 transitions. [2021-10-08 18:14:26,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 344 transitions. [2021-10-08 18:14:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:14:26,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:26,726 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:26,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-08 18:14:26,926 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 [2021-10-08 18:14:26,927 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)] === [2021-10-08 18:14:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1572723417, now seen corresponding path program 33 times [2021-10-08 18:14:26,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:26,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149511097] [2021-10-08 18:14:26,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:26,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:26,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:26,930 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) [2021-10-08 18:14:26,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 18:14:27,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:14:27,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:27,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:14:27,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 18:14:27,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:14:28,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:28,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149511097] [2021-10-08 18:14:28,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149511097] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:28,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:28,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-08 18:14:28,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094882324] [2021-10-08 18:14:28,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:14:28,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:14:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:14:28,058 INFO L87 Difference]: Start difference. First operand 166 states and 344 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:29,028 INFO L93 Difference]: Finished difference Result 291 states and 582 transitions. [2021-10-08 18:14:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:14:29,029 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:14:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:29,029 INFO L225 Difference]: With dead ends: 291 [2021-10-08 18:14:29,030 INFO L226 Difference]: Without dead ends: 138 [2021-10-08 18:14:29,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1067.0ms TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2021-10-08 18:14:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-08 18:14:29,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 78. [2021-10-08 18:14:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.844155844155844) internal successors, (142), 77 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 142 transitions. [2021-10-08 18:14:29,032 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 142 transitions. Word has length 18 [2021-10-08 18:14:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:29,032 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 142 transitions. [2021-10-08 18:14:29,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 142 transitions. [2021-10-08 18:14:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:14:29,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:29,033 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:29,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:29,233 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 [2021-10-08 18:14:29,234 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)] === [2021-10-08 18:14:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:29,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2093699715, now seen corresponding path program 34 times [2021-10-08 18:14:29,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:29,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140802135] [2021-10-08 18:14:29,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:14:29,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:29,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:29,237 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) [2021-10-08 18:14:29,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 18:14:29,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:14:29,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:29,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:14:29,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:29,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:30,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:30,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140802135] [2021-10-08 18:14:30,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140802135] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:30,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:30,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:14:30,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196618929] [2021-10-08 18:14:30,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:14:30,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:14:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:30,415 INFO L87 Difference]: Start difference. First operand 78 states and 142 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:31,318 INFO L93 Difference]: Finished difference Result 94 states and 167 transitions. [2021-10-08 18:14:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:14:31,318 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:14:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:31,319 INFO L225 Difference]: With dead ends: 94 [2021-10-08 18:14:31,319 INFO L226 Difference]: Without dead ends: 82 [2021-10-08 18:14:31,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1124.3ms TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:14:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-08 18:14:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-10-08 18:14:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8354430379746836) internal successors, (145), 79 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 145 transitions. [2021-10-08 18:14:31,322 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 145 transitions. Word has length 18 [2021-10-08 18:14:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:31,323 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 145 transitions. [2021-10-08 18:14:31,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 145 transitions. [2021-10-08 18:14:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:14:31,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:31,324 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:31,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:31,528 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 [2021-10-08 18:14:31,529 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)] === [2021-10-08 18:14:31,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:31,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1064095769, now seen corresponding path program 35 times [2021-10-08 18:14:31,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:31,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691343976] [2021-10-08 18:14:31,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:14:31,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:31,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:31,532 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) [2021-10-08 18:14:31,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 18:14:31,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:14:31,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:31,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 18:14:31,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:32,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:32,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:32,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691343976] [2021-10-08 18:14:32,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691343976] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:32,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:32,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:14:32,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673720821] [2021-10-08 18:14:32,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:14:32,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:32,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:14:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:32,659 INFO L87 Difference]: Start difference. First operand 80 states and 145 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:33,562 INFO L93 Difference]: Finished difference Result 92 states and 162 transitions. [2021-10-08 18:14:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 18:14:33,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:14:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:33,563 INFO L225 Difference]: With dead ends: 92 [2021-10-08 18:14:33,563 INFO L226 Difference]: Without dead ends: 74 [2021-10-08 18:14:33,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1151.9ms TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:14:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-08 18:14:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-08 18:14:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.835820895522388) internal successors, (123), 67 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 123 transitions. [2021-10-08 18:14:33,565 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 123 transitions. Word has length 18 [2021-10-08 18:14:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:33,565 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 123 transitions. [2021-10-08 18:14:33,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 123 transitions. [2021-10-08 18:14:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:14:33,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:33,566 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:33,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-08 18:14:33,766 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 [2021-10-08 18:14:33,767 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)] === [2021-10-08 18:14:33,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:33,767 INFO L82 PathProgramCache]: Analyzing trace with hash 440849539, now seen corresponding path program 36 times [2021-10-08 18:14:33,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:33,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272661545] [2021-10-08 18:14:33,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:14:33,769 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:33,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:33,770 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) [2021-10-08 18:14:33,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 18:14:34,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:14:34,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:34,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:14:34,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:34,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:35,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:35,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272661545] [2021-10-08 18:14:35,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272661545] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:35,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:35,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:14:35,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408861251] [2021-10-08 18:14:35,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:14:35,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:14:35,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:35,006 INFO L87 Difference]: Start difference. First operand 68 states and 123 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:35,248 INFO L93 Difference]: Finished difference Result 98 states and 170 transitions. [2021-10-08 18:14:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:14:35,249 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:14:35,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:35,249 INFO L225 Difference]: With dead ends: 98 [2021-10-08 18:14:35,249 INFO L226 Difference]: Without dead ends: 98 [2021-10-08 18:14:35,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 548.7ms TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-08 18:14:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2021-10-08 18:14:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8227848101265822) internal successors, (144), 79 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 144 transitions. [2021-10-08 18:14:35,253 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 144 transitions. Word has length 18 [2021-10-08 18:14:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:35,253 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 144 transitions. [2021-10-08 18:14:35,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 144 transitions. [2021-10-08 18:14:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:14:35,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:35,254 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:35,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:35,467 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 [2021-10-08 18:14:35,467 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)] === [2021-10-08 18:14:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:35,468 INFO L82 PathProgramCache]: Analyzing trace with hash -295631903, now seen corresponding path program 37 times [2021-10-08 18:14:35,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:35,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508294340] [2021-10-08 18:14:35,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:14:35,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:35,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:35,471 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) [2021-10-08 18:14:35,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 18:14:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:35,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:14:35,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:36,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:14:36,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:36,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508294340] [2021-10-08 18:14:36,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508294340] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:36,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:36,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-08 18:14:36,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810938443] [2021-10-08 18:14:36,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:36,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:36,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:36,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:36,352 INFO L87 Difference]: Start difference. First operand 80 states and 144 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:36,624 INFO L93 Difference]: Finished difference Result 97 states and 170 transitions. [2021-10-08 18:14:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:14:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:14:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:36,625 INFO L225 Difference]: With dead ends: 97 [2021-10-08 18:14:36,625 INFO L226 Difference]: Without dead ends: 90 [2021-10-08 18:14:36,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 456.4ms TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:14:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-08 18:14:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2021-10-08 18:14:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.8313253012048192) internal successors, (152), 83 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 152 transitions. [2021-10-08 18:14:36,628 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 152 transitions. Word has length 19 [2021-10-08 18:14:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:36,628 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 152 transitions. [2021-10-08 18:14:36,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 152 transitions. [2021-10-08 18:14:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:14:36,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:36,628 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:36,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:36,832 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 [2021-10-08 18:14:36,833 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)] === [2021-10-08 18:14:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1985295533, now seen corresponding path program 38 times [2021-10-08 18:14:36,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:36,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105327176] [2021-10-08 18:14:36,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:36,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:36,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:36,836 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) [2021-10-08 18:14:36,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 18:14:37,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:37,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:37,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:14:37,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:37,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:14:37,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:37,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105327176] [2021-10-08 18:14:37,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105327176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:37,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:37,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-08 18:14:37,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981644141] [2021-10-08 18:14:37,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:37,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:37,744 INFO L87 Difference]: Start difference. First operand 84 states and 152 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:38,065 INFO L93 Difference]: Finished difference Result 117 states and 209 transitions. [2021-10-08 18:14:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:14:38,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:14:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:38,067 INFO L225 Difference]: With dead ends: 117 [2021-10-08 18:14:38,067 INFO L226 Difference]: Without dead ends: 112 [2021-10-08 18:14:38,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 415.5ms TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:14:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-08 18:14:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 86. [2021-10-08 18:14:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.8470588235294119) internal successors, (157), 85 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 157 transitions. [2021-10-08 18:14:38,072 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 157 transitions. Word has length 19 [2021-10-08 18:14:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:38,072 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 157 transitions. [2021-10-08 18:14:38,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 157 transitions. [2021-10-08 18:14:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:14:38,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:38,073 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:38,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-08 18:14:38,273 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 [2021-10-08 18:14:38,274 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)] === [2021-10-08 18:14:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2066342001, now seen corresponding path program 39 times [2021-10-08 18:14:38,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:38,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666785082] [2021-10-08 18:14:38,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:38,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:38,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:38,277 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) [2021-10-08 18:14:38,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 18:14:38,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:14:38,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:38,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:14:38,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:14:38,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 18:14:38,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:38,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666785082] [2021-10-08 18:14:38,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666785082] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:38,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:38,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-08 18:14:38,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022702081] [2021-10-08 18:14:38,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:14:38,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:38,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:14:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:14:38,985 INFO L87 Difference]: Start difference. First operand 86 states and 157 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:39,037 INFO L93 Difference]: Finished difference Result 95 states and 168 transitions. [2021-10-08 18:14:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:14:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:14:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:39,039 INFO L225 Difference]: With dead ends: 95 [2021-10-08 18:14:39,039 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 18:14:39,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:14:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 18:14:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 18:14:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 51 transitions. [2021-10-08 18:14:39,041 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 51 transitions. Word has length 19 [2021-10-08 18:14:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:39,041 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 51 transitions. [2021-10-08 18:14:39,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 51 transitions. [2021-10-08 18:14:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:14:39,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:39,042 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:39,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:39,242 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 [2021-10-08 18:14:39,243 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)] === [2021-10-08 18:14:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:39,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1803282193, now seen corresponding path program 40 times [2021-10-08 18:14:39,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:39,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522645586] [2021-10-08 18:14:39,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:14:39,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:39,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:39,247 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) [2021-10-08 18:14:39,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 18:14:39,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:14:39,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:39,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:14:39,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:40,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:40,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:40,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522645586] [2021-10-08 18:14:40,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522645586] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:40,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:40,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:14:40,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918179207] [2021-10-08 18:14:40,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:14:40,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:14:40,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:14:40,792 INFO L87 Difference]: Start difference. First operand 34 states and 51 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:41,145 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2021-10-08 18:14:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:14:41,146 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:14:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:41,146 INFO L225 Difference]: With dead ends: 44 [2021-10-08 18:14:41,146 INFO L226 Difference]: Without dead ends: 42 [2021-10-08 18:14:41,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 796.6ms TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:14:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-08 18:14:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2021-10-08 18:14:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2021-10-08 18:14:41,148 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 20 [2021-10-08 18:14:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:41,148 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-10-08 18:14:41,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2021-10-08 18:14:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:14:41,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:41,149 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:41,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-08 18:14:41,351 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 [2021-10-08 18:14:41,352 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash -388491369, now seen corresponding path program 41 times [2021-10-08 18:14:41,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:41,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884022220] [2021-10-08 18:14:41,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:14:41,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:41,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:41,355 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:41,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 18:14:41,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:14:41,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:41,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:14:41,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:42,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:42,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:42,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884022220] [2021-10-08 18:14:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884022220] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:42,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:42,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:14:42,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502380529] [2021-10-08 18:14:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:14:42,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:14:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:14:42,828 INFO L87 Difference]: Start difference. First operand 32 states and 46 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) [2021-10-08 18:14:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:43,520 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2021-10-08 18:14:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:14:43,521 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 20 [2021-10-08 18:14:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:43,521 INFO L225 Difference]: With dead ends: 44 [2021-10-08 18:14:43,521 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 18:14:43,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1068.2ms TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:14:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 18:14:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 18:14:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2021-10-08 18:14:43,523 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 20 [2021-10-08 18:14:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:43,523 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2021-10-08 18:14:43,523 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) [2021-10-08 18:14:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2021-10-08 18:14:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 18:14:43,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:43,524 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:43,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:43,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:43,738 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:43,738 INFO L82 PathProgramCache]: Analyzing trace with hash 253336167, now seen corresponding path program 42 times [2021-10-08 18:14:43,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:43,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392519907] [2021-10-08 18:14:43,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:14:43,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:43,741 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:43,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 18:14:44,153 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:14:44,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:44,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:14:44,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 18:14:44,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 18:14:44,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:44,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392519907] [2021-10-08 18:14:44,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392519907] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:44,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:44,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-08 18:14:44,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294191860] [2021-10-08 18:14:44,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:14:44,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:14:44,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:14:44,598 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:44,624 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2021-10-08 18:14:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:14:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 18:14:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:44,625 INFO L225 Difference]: With dead ends: 33 [2021-10-08 18:14:44,625 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 18:14:44,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:14:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 18:14:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 18:14:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 18:14:44,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-08 18:14:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:44,627 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 18:14:44,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 18:14:44,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 18:14:44,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:14:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:14:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:14:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:14:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:14:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:14:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:14:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:14:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:14:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:14:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:14:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:14:44,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-08 18:14:44,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:44,837 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:14:44,837 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:14:44,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:14:44 BasicIcfg [2021-10-08 18:14:44,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:14:44,840 INFO L168 Benchmark]: Toolchain (without parser) took 80926.82 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.8 MB in the beginning and 131.0 MB in the end (delta: 756.1 kB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:44,841 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory was 126.5 MB in the beginning and 126.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:14:44,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.54 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 120.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:44,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:44,842 INFO L168 Benchmark]: Boogie Preprocessor took 32.03 ms. Allocated memory is still 156.2 MB. Free memory was 118.8 MB in the beginning and 117.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:44,842 INFO L168 Benchmark]: RCFGBuilder took 528.43 ms. Allocated memory is still 156.2 MB. Free memory was 117.3 MB in the beginning and 105.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:44,843 INFO L168 Benchmark]: TraceAbstraction took 80020.40 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 104.9 MB in the beginning and 131.0 MB in the end (delta: -26.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:44,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory was 126.5 MB in the beginning and 126.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.54 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 120.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.03 ms. Allocated memory is still 156.2 MB. Free memory was 118.8 MB in the beginning and 117.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 528.43 ms. Allocated memory is still 156.2 MB. Free memory was 117.3 MB in the beginning and 105.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 80020.40 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 104.9 MB in the beginning and 131.0 MB in the end (delta: -26.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7754.1ms, 87 PlacesBefore, 30 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 496 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 84 TotalNumberOfCompositions, 578 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 578, positive: 578, positive conditional: 0, positive unconditional: 578, 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: 333, positive: 333, positive conditional: 0, positive unconditional: 333, 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: 333, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 578, positive: 245, positive conditional: 0, positive unconditional: 245, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 333, unknown conditional: 0, unknown unconditional: 333] , 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 - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 79812.4ms, OverallIterations: 51, TraceHistogramMax: 5, EmptinessCheckTime: 48.9ms, AutomataDifference: 26338.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7816.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1230 SDtfs, 2901 SDslu, 5633 SDs, 0 SdLazy, 5860 SolverSat, 738 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9092.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1692 GetRequests, 922 SyntacticMatches, 2 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2458 ImplicationChecksByTransitivity, 26912.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred in iteration=35, InterpolantAutomatonStates: 668, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 333.8ms AutomataMinimizationTime, 51 MinimizatonAttempts, 2228 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 316.3ms SsaConstructionTime, 2071.1ms SatisfiabilityAnalysisTime, 23660.2ms InterpolantComputationTime, 753 NumberOfCodeBlocks, 738 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 1404 ConstructedInterpolants, 14 QuantifiedInterpolants, 11078 SizeOfPredicates, 120 NumberOfNonLiveVariables, 3385 ConjunctsInSsa, 505 ConjunctsInUnsatCore, 102 InterpolantComputations, 22 PerfectInterpolantSequences, 354/942 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 18:14:44,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...