/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/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:28:57,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:28:57,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:28:57,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:28:57,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:28:57,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:28:57,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:28:57,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:28:57,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:28:57,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:28:57,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:28:57,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:28:57,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:28:57,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:28:57,193 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:28:57,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:28:57,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:28:57,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:28:57,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:28:57,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:28:57,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:28:57,195 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:28:57,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:28:57,196 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:28:57,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:28:57,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:28:57,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:28:57,197 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:28:57,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:28:57,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:28:57,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:28:57,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:28:57,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:28:57,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:28:57,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:28:57,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:28:57,199 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:28:57,199 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:28:57,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:28:57,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:28:57,200 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:28:57,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:28:57,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:28:57,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:28:57,648 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:28:57,649 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:28:57,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2021-10-07 16:28:57,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e039d5d/42065c2bd5f94d6cbda536019cd63376/FLAGc5cbd56f0 [2021-10-07 16:28:58,414 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:28:58,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2021-10-07 16:28:58,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e039d5d/42065c2bd5f94d6cbda536019cd63376/FLAGc5cbd56f0 [2021-10-07 16:28:58,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e039d5d/42065c2bd5f94d6cbda536019cd63376 [2021-10-07 16:28:58,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:28:58,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:28:58,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:28:58,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:28:58,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:28:58,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:28:58" (1/1) ... [2021-10-07 16:28:58,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11487356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:58, skipping insertion in model container [2021-10-07 16:28:58,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:28:58" (1/1) ... [2021-10-07 16:28:58,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:28:58,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:28:58,969 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/popl20-nonblocking-cntr.wvr.c[2030,2043] [2021-10-07 16:28:58,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:28:58,987 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:28:59,010 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/popl20-nonblocking-cntr.wvr.c[2030,2043] [2021-10-07 16:28:59,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:28:59,029 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:28:59,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59 WrapperNode [2021-10-07 16:28:59,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:28:59,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:28:59,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:28:59,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:28:59,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:28:59,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:28:59,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:28:59,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:28:59,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:28:59,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:28:59,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:28:59,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:28:59,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (1/1) ... [2021-10-07 16:28:59,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:28:59,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:28:59,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:28:59,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:28:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:28:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:28:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:28:59,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:28:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:28:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:28:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:28:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:28:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:28:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:28:59,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:28:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:28:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:28:59,224 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:28:59,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:28:59,892 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 16:28:59,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:28:59 BoogieIcfgContainer [2021-10-07 16:28:59,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:28:59,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:28:59,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:28:59,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:28:59,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:28:58" (1/3) ... [2021-10-07 16:28:59,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6f29e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:28:59, skipping insertion in model container [2021-10-07 16:28:59,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:59" (2/3) ... [2021-10-07 16:28:59,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6f29e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:28:59, skipping insertion in model container [2021-10-07 16:28:59,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:28:59" (3/3) ... [2021-10-07 16:28:59,910 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2021-10-07 16:28:59,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:28:59,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 16:28:59,925 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:28:59,994 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,995 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,995 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,996 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,997 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,997 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:59,998 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,000 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,000 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,000 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,001 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,001 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,002 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,004 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,005 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,005 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,005 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,006 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,006 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,008 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,009 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,012 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,012 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,012 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,012 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,012 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,013 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,016 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,017 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,018 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,021 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,022 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,022 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:29:00,036 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:29:00,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:29:00,142 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:29:00,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 16:29:00,166 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:29:00,178 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 85 transitions, 186 flow [2021-10-07 16:29:00,187 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 85 transitions, 186 flow [2021-10-07 16:29:00,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 186 flow [2021-10-07 16:29:00,262 INFO L129 PetriNetUnfolder]: 6/83 cut-off events. [2021-10-07 16:29:00,263 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:29:00,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-10-07 16:29:00,274 INFO L116 LiptonReduction]: Number of co-enabled transitions 540 [2021-10-07 16:29:08,113 INFO L131 LiptonReduction]: Checked pairs total: 656 [2021-10-07 16:29:08,113 INFO L133 LiptonReduction]: Total number of compositions: 88 [2021-10-07 16:29:08,124 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-07 16:29:08,140 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 16:29:08,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:08,149 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 16:29:08,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:08,156 INFO L82 PathProgramCache]: Analyzing trace with hash 355, now seen corresponding path program 1 times [2021-10-07 16:29:08,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:08,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419019612] [2021-10-07 16:29:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:08,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:08,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:08,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:08,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:29:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:08,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 16:29:08,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:08,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:08,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:08,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419019612] [2021-10-07 16:29:08,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419019612] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:08,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:08,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 16:29:08,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134861125] [2021-10-07 16:29:08,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 16:29:08,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 16:29:08,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:29:08,277 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:08,293 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-07 16:29:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 16:29:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 16:29:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:08,308 INFO L225 Difference]: With dead ends: 64 [2021-10-07 16:29:08,308 INFO L226 Difference]: Without dead ends: 64 [2021-10-07 16:29:08,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:29:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-07 16:29:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-07 16:29:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-07 16:29:08,358 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-07 16:29:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:08,359 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-07 16:29:08,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-07 16:29:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:29:08,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:08,360 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:29:08,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:08,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:08,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:08,573 INFO L82 PathProgramCache]: Analyzing trace with hash 349677, now seen corresponding path program 1 times [2021-10-07 16:29:08,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:08,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106142527] [2021-10-07 16:29:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:08,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:08,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:08,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:08,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:29:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:08,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:29:08,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:08,925 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:29:08,926 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 [2021-10-07 16:29:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:09,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:09,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:09,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106142527] [2021-10-07 16:29:09,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106142527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:09,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:09,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:29:09,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69755589] [2021-10-07 16:29:09,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:29:09,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:09,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:29:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:29:09,073 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:09,105 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-07 16:29:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:29:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:29:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:09,108 INFO L225 Difference]: With dead ends: 58 [2021-10-07 16:29:09,108 INFO L226 Difference]: Without dead ends: 58 [2021-10-07 16:29:09,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:29:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-07 16:29:09,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-07 16:29:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-07 16:29:09,120 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-07 16:29:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:09,120 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-07 16:29:09,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-07 16:29:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:29:09,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:09,121 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:29:09,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:09,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:09,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:09,330 INFO L82 PathProgramCache]: Analyzing trace with hash 349679, now seen corresponding path program 1 times [2021-10-07 16:29:09,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:09,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795655774] [2021-10-07 16:29:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:09,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:09,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:09,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:09,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:29:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:09,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:29:09,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:09,398 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:29:09,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 16:29:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:09,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:09,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:09,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795655774] [2021-10-07 16:29:09,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795655774] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:09,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:09,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:29:09,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202267128] [2021-10-07 16:29:09,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:29:09,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:09,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:29:09,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:09,440 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:09,465 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-07 16:29:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:29:09,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:29:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:09,468 INFO L225 Difference]: With dead ends: 52 [2021-10-07 16:29:09,468 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:29:09,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:29:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 16:29:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-07 16:29:09,477 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-07 16:29:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:09,478 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-07 16:29:09,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-07 16:29:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:29:09,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:09,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:29:09,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:09,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:09,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:09,695 INFO L82 PathProgramCache]: Analyzing trace with hash 336048165, now seen corresponding path program 1 times [2021-10-07 16:29:09,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:09,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244340995] [2021-10-07 16:29:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:09,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:09,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:09,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:09,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:29:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:09,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:29:09,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:09,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:09,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:09,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244340995] [2021-10-07 16:29:09,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244340995] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:09,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:09,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:29:09,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902807874] [2021-10-07 16:29:09,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:29:09,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:29:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:09,918 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:09,942 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-07 16:29:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:29:09,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:29:09,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:09,944 INFO L225 Difference]: With dead ends: 43 [2021-10-07 16:29:09,944 INFO L226 Difference]: Without dead ends: 43 [2021-10-07 16:29:09,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-07 16:29:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-07 16:29:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-07 16:29:09,950 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-07 16:29:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:09,951 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-07 16:29:09,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-07 16:29:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:29:09,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:09,953 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:29:09,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:10,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:10,154 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:10,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:10,155 INFO L82 PathProgramCache]: Analyzing trace with hash 336048167, now seen corresponding path program 1 times [2021-10-07 16:29:10,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:10,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421171848] [2021-10-07 16:29:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:10,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:10,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:10,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:29:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:10,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:29:10,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:10,234 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:29:10,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 16:29:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:10,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:10,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:10,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421171848] [2021-10-07 16:29:10,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421171848] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:10,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:10,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:29:10,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450678979] [2021-10-07 16:29:10,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:29:10,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:29:10,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:10,292 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:10,307 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-07 16:29:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:29:10,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:29:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:10,309 INFO L225 Difference]: With dead ends: 34 [2021-10-07 16:29:10,309 INFO L226 Difference]: Without dead ends: 34 [2021-10-07 16:29:10,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-07 16:29:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-07 16:29:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-07 16:29:10,314 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-07 16:29:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:10,315 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-07 16:29:10,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-07 16:29:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:29:10,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:10,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:10,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:10,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:10,537 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1675638943, now seen corresponding path program 1 times [2021-10-07 16:29:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:10,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764310778] [2021-10-07 16:29:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:10,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:10,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:10,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:29:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:10,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:29:10,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:10,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:10,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:10,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764310778] [2021-10-07 16:29:10,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764310778] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:10,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:10,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:29:10,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935307766] [2021-10-07 16:29:10,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:29:10,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:29:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:10,715 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:10,736 INFO L93 Difference]: Finished difference Result 57 states and 124 transitions. [2021-10-07 16:29:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:29:10,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:29:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:10,747 INFO L225 Difference]: With dead ends: 57 [2021-10-07 16:29:10,747 INFO L226 Difference]: Without dead ends: 42 [2021-10-07 16:29:10,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:29:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-07 16:29:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-07 16:29:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-07 16:29:10,764 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-07 16:29:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:10,764 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-07 16:29:10,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-07 16:29:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:29:10,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:10,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:10,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:10,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:10,980 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:10,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1126908568, now seen corresponding path program 1 times [2021-10-07 16:29:10,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:10,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937811651] [2021-10-07 16:29:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:10,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:10,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:10,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:10,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:29:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:11,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:29:11,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:11,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:11,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:11,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937811651] [2021-10-07 16:29:11,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937811651] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:11,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:11,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-07 16:29:11,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758288038] [2021-10-07 16:29:11,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:29:11,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:29:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:29:11,350 INFO L87 Difference]: Start difference. First operand 42 states and 92 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) [2021-10-07 16:29:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:11,613 INFO L93 Difference]: Finished difference Result 86 states and 189 transitions. [2021-10-07 16:29:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:29:11,614 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 [2021-10-07 16:29:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:11,615 INFO L225 Difference]: With dead ends: 86 [2021-10-07 16:29:11,616 INFO L226 Difference]: Without dead ends: 86 [2021-10-07 16:29:11,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 161.6ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-07 16:29:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 52. [2021-10-07 16:29:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-07 16:29:11,622 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-07 16:29:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:11,622 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-07 16:29:11,623 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) [2021-10-07 16:29:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-07 16:29:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:11,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:11,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:11,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:11,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:11,837 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash -575365506, now seen corresponding path program 1 times [2021-10-07 16:29:11,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:11,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701208935] [2021-10-07 16:29:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:11,840 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:11,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:11,841 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:11,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:29:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:11,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:29:11,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:11,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:12,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:12,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701208935] [2021-10-07 16:29:12,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701208935] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:12,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:12,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 4 [2021-10-07 16:29:12,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096511545] [2021-10-07 16:29:12,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:29:12,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:29:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:29:12,274 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:12,319 INFO L93 Difference]: Finished difference Result 95 states and 211 transitions. [2021-10-07 16:29:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:29:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 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 15 [2021-10-07 16:29:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:12,321 INFO L225 Difference]: With dead ends: 95 [2021-10-07 16:29:12,321 INFO L226 Difference]: Without dead ends: 76 [2021-10-07 16:29:12,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:29:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-07 16:29:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 64. [2021-10-07 16:29:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.3174603174603177) internal successors, (146), 63 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 146 transitions. [2021-10-07 16:29:12,327 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 146 transitions. Word has length 15 [2021-10-07 16:29:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:12,328 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 146 transitions. [2021-10-07 16:29:12,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:12,328 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 146 transitions. [2021-10-07 16:29:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:12,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:12,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:12,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:12,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:12,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1110258588, now seen corresponding path program 2 times [2021-10-07 16:29:12,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:12,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299744432] [2021-10-07 16:29:12,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:29:12,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:12,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:12,552 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:12,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:29:12,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:12,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:12,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:29:12,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:29:12,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:29:13,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:13,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299744432] [2021-10-07 16:29:13,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299744432] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:13,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:13,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:29:13,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077281203] [2021-10-07 16:29:13,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:29:13,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:13,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:29:13,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:29:13,059 INFO L87 Difference]: Start difference. First operand 64 states and 146 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:13,168 INFO L93 Difference]: Finished difference Result 84 states and 189 transitions. [2021-10-07 16:29:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:29:13,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 15 [2021-10-07 16:29:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:13,170 INFO L225 Difference]: With dead ends: 84 [2021-10-07 16:29:13,170 INFO L226 Difference]: Without dead ends: 80 [2021-10-07 16:29:13,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:29:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-07 16:29:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-07 16:29:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.305084745762712) internal successors, (136), 59 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 136 transitions. [2021-10-07 16:29:13,182 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 136 transitions. Word has length 15 [2021-10-07 16:29:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:13,183 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 136 transitions. [2021-10-07 16:29:13,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 136 transitions. [2021-10-07 16:29:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:13,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:13,188 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:13,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:13,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:13,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash -879028985, now seen corresponding path program 3 times [2021-10-07 16:29:13,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:13,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18344080] [2021-10-07 16:29:13,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:29:13,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:13,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:13,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:29:13,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:29:13,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:13,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:13,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:13,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:14,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:14,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18344080] [2021-10-07 16:29:14,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18344080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:14,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:14,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:29:14,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454954564] [2021-10-07 16:29:14,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:29:14,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:29:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:14,392 INFO L87 Difference]: Start difference. First operand 60 states and 136 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:16,400 INFO L93 Difference]: Finished difference Result 208 states and 492 transitions. [2021-10-07 16:29:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 16:29:16,401 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:16,404 INFO L225 Difference]: With dead ends: 208 [2021-10-07 16:29:16,404 INFO L226 Difference]: Without dead ends: 204 [2021-10-07 16:29:16,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1764.8ms TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 16:29:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-07 16:29:16,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 96. [2021-10-07 16:29:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.473684210526316) internal successors, (235), 95 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 235 transitions. [2021-10-07 16:29:16,415 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 235 transitions. Word has length 16 [2021-10-07 16:29:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:16,416 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 235 transitions. [2021-10-07 16:29:16,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 235 transitions. [2021-10-07 16:29:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:16,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:16,418 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:16,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:16,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:16,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1185387243, now seen corresponding path program 4 times [2021-10-07 16:29:16,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:16,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000552884] [2021-10-07 16:29:16,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:29:16,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:16,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:16,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:16,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:29:16,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:29:16,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:16,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:16,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:16,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:17,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:17,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000552884] [2021-10-07 16:29:17,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000552884] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:17,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:17,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:29:17,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271603865] [2021-10-07 16:29:17,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:29:17,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:29:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:17,945 INFO L87 Difference]: Start difference. First operand 96 states and 235 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:21,016 INFO L93 Difference]: Finished difference Result 224 states and 501 transitions. [2021-10-07 16:29:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 16:29:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:21,020 INFO L225 Difference]: With dead ends: 224 [2021-10-07 16:29:21,020 INFO L226 Difference]: Without dead ends: 224 [2021-10-07 16:29:21,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2858.5ms TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 16:29:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-07 16:29:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 106. [2021-10-07 16:29:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.552380952380952) internal successors, (268), 105 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 268 transitions. [2021-10-07 16:29:21,030 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 268 transitions. Word has length 16 [2021-10-07 16:29:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:21,030 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 268 transitions. [2021-10-07 16:29:21,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 268 transitions. [2021-10-07 16:29:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:21,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:21,032 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:21,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:21,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:21,245 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:21,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1413922067, now seen corresponding path program 5 times [2021-10-07 16:29:21,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:21,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068275079] [2021-10-07 16:29:21,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:29:21,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:21,248 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:21,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:29:21,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:21,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:21,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:21,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:21,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:22,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:22,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068275079] [2021-10-07 16:29:22,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068275079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:22,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:22,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:29:22,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883590761] [2021-10-07 16:29:22,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:29:22,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:29:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:22,170 INFO L87 Difference]: Start difference. First operand 106 states and 268 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:24,258 INFO L93 Difference]: Finished difference Result 258 states and 618 transitions. [2021-10-07 16:29:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:29:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:24,262 INFO L225 Difference]: With dead ends: 258 [2021-10-07 16:29:24,262 INFO L226 Difference]: Without dead ends: 250 [2021-10-07 16:29:24,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1855.8ms TimeCoverageRelationStatistics Valid=359, Invalid=901, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:29:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-07 16:29:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 122. [2021-10-07 16:29:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.677685950413223) internal successors, (324), 121 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 324 transitions. [2021-10-07 16:29:24,272 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 324 transitions. Word has length 16 [2021-10-07 16:29:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:24,273 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 324 transitions. [2021-10-07 16:29:24,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 324 transitions. [2021-10-07 16:29:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:24,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:24,274 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:24,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:24,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:24,488 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:24,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1126660501, now seen corresponding path program 6 times [2021-10-07 16:29:24,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:24,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333832918] [2021-10-07 16:29:24,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:29:24,491 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:24,492 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:24,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:29:24,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:29:24,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:24,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:29:24,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:24,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:25,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:25,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333832918] [2021-10-07 16:29:25,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333832918] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:25,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:25,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 16:29:25,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267261896] [2021-10-07 16:29:25,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:29:25,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:29:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:29:25,513 INFO L87 Difference]: Start difference. First operand 122 states and 324 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:27,016 INFO L93 Difference]: Finished difference Result 164 states and 423 transitions. [2021-10-07 16:29:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:29:27,017 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:27,018 INFO L225 Difference]: With dead ends: 164 [2021-10-07 16:29:27,019 INFO L226 Difference]: Without dead ends: 162 [2021-10-07 16:29:27,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1449.0ms TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:29:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-07 16:29:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2021-10-07 16:29:27,025 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) [2021-10-07 16:29:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 320 transitions. [2021-10-07 16:29:27,026 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 320 transitions. Word has length 16 [2021-10-07 16:29:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:27,027 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 320 transitions. [2021-10-07 16:29:27,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 320 transitions. [2021-10-07 16:29:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:27,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:27,028 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:27,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:27,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:27,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:27,242 INFO L82 PathProgramCache]: Analyzing trace with hash 209711663, now seen corresponding path program 7 times [2021-10-07 16:29:27,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:27,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961089746] [2021-10-07 16:29:27,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:29:27,244 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:27,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:27,245 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:27,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:29:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:27,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:27,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:28,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:28,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961089746] [2021-10-07 16:29:28,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961089746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:28,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:28,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:29:28,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509379852] [2021-10-07 16:29:28,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:29:28,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:28,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:29:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:28,425 INFO L87 Difference]: Start difference. First operand 122 states and 320 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:31,058 INFO L93 Difference]: Finished difference Result 252 states and 601 transitions. [2021-10-07 16:29:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 16:29:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:31,061 INFO L225 Difference]: With dead ends: 252 [2021-10-07 16:29:31,061 INFO L226 Difference]: Without dead ends: 252 [2021-10-07 16:29:31,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2281.2ms TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2021-10-07 16:29:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-07 16:29:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 148. [2021-10-07 16:29:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.748299319727891) internal successors, (404), 147 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) [2021-10-07 16:29:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 404 transitions. [2021-10-07 16:29:31,070 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 404 transitions. Word has length 16 [2021-10-07 16:29:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:31,071 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 404 transitions. [2021-10-07 16:29:31,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 404 transitions. [2021-10-07 16:29:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:31,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:31,072 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:31,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:31,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:31,286 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash -18823161, now seen corresponding path program 8 times [2021-10-07 16:29:31,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:31,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383227679] [2021-10-07 16:29:31,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:29:31,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:31,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:31,289 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:31,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:29:31,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:31,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:31,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:29:31,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:31,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:32,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:32,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383227679] [2021-10-07 16:29:32,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383227679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:32,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:32,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:29:32,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583189429] [2021-10-07 16:29:32,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:29:32,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:32,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:29:32,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:32,387 INFO L87 Difference]: Start difference. First operand 148 states and 404 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:34,175 INFO L93 Difference]: Finished difference Result 276 states and 671 transitions. [2021-10-07 16:29:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 16:29:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:34,179 INFO L225 Difference]: With dead ends: 276 [2021-10-07 16:29:34,179 INFO L226 Difference]: Without dead ends: 268 [2021-10-07 16:29:34,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1630.2ms TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:29:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-07 16:29:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 148. [2021-10-07 16:29:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.741496598639456) internal successors, (403), 147 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 403 transitions. [2021-10-07 16:29:34,189 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 403 transitions. Word has length 16 [2021-10-07 16:29:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:34,189 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 403 transitions. [2021-10-07 16:29:34,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 403 transitions. [2021-10-07 16:29:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:34,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:34,190 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:34,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:34,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:34,394 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:34,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1773207889, now seen corresponding path program 9 times [2021-10-07 16:29:34,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:34,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788462029] [2021-10-07 16:29:34,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:29:34,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:34,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:34,397 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:34,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:29:34,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:29:34,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:34,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:29:34,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:34,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:35,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:35,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788462029] [2021-10-07 16:29:35,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788462029] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:35,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:35,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 16:29:35,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192272474] [2021-10-07 16:29:35,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:29:35,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:29:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:29:35,408 INFO L87 Difference]: Start difference. First operand 148 states and 403 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:36,697 INFO L93 Difference]: Finished difference Result 166 states and 443 transitions. [2021-10-07 16:29:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:29:36,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:36,699 INFO L225 Difference]: With dead ends: 166 [2021-10-07 16:29:36,699 INFO L226 Difference]: Without dead ends: 164 [2021-10-07 16:29:36,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1042.9ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:29:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-07 16:29:36,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 150. [2021-10-07 16:29:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.751677852348993) internal successors, (410), 149 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 410 transitions. [2021-10-07 16:29:36,707 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 410 transitions. Word has length 16 [2021-10-07 16:29:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:36,708 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 410 transitions. [2021-10-07 16:29:36,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:36,708 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 410 transitions. [2021-10-07 16:29:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:36,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:36,709 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:36,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-07 16:29:36,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:36,922 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:36,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1056210715, now seen corresponding path program 10 times [2021-10-07 16:29:36,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:36,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362745816] [2021-10-07 16:29:36,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:29:36,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:36,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:36,925 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:36,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:29:37,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:29:37,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:37,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:37,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:37,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:38,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:38,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362745816] [2021-10-07 16:29:38,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362745816] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:38,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:38,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:29:38,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026612694] [2021-10-07 16:29:38,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:29:38,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:29:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:38,063 INFO L87 Difference]: Start difference. First operand 150 states and 410 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:40,580 INFO L93 Difference]: Finished difference Result 276 states and 688 transitions. [2021-10-07 16:29:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 16:29:40,581 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:40,584 INFO L225 Difference]: With dead ends: 276 [2021-10-07 16:29:40,584 INFO L226 Difference]: Without dead ends: 276 [2021-10-07 16:29:40,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2282.4ms TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2021-10-07 16:29:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-07 16:29:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 158. [2021-10-07 16:29:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.7961783439490446) internal successors, (439), 157 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 439 transitions. [2021-10-07 16:29:40,594 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 439 transitions. Word has length 16 [2021-10-07 16:29:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:40,595 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 439 transitions. [2021-10-07 16:29:40,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 439 transitions. [2021-10-07 16:29:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:40,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:40,596 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:40,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:40,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:40,810 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash 827675891, now seen corresponding path program 11 times [2021-10-07 16:29:40,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:40,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067921269] [2021-10-07 16:29:40,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:29:40,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:40,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:40,814 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:40,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:29:41,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:41,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:41,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:29:41,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:41,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:41,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:41,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067921269] [2021-10-07 16:29:41,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067921269] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:41,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:41,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:29:41,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397368848] [2021-10-07 16:29:41,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:29:41,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:29:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:41,822 INFO L87 Difference]: Start difference. First operand 158 states and 439 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:43,904 INFO L93 Difference]: Finished difference Result 310 states and 767 transitions. [2021-10-07 16:29:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 16:29:43,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:43,908 INFO L225 Difference]: With dead ends: 310 [2021-10-07 16:29:43,908 INFO L226 Difference]: Without dead ends: 302 [2021-10-07 16:29:43,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1861.2ms TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2021-10-07 16:29:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-07 16:29:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 154. [2021-10-07 16:29:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.7712418300653594) internal successors, (424), 153 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 424 transitions. [2021-10-07 16:29:43,917 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 424 transitions. Word has length 16 [2021-10-07 16:29:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:43,917 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 424 transitions. [2021-10-07 16:29:43,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 424 transitions. [2021-10-07 16:29:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:29:43,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:43,918 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:43,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:44,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:44,132 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:44,132 INFO L82 PathProgramCache]: Analyzing trace with hash -926708837, now seen corresponding path program 12 times [2021-10-07 16:29:44,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:44,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940148792] [2021-10-07 16:29:44,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:29:44,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:44,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:44,135 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:44,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:29:44,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:29:44,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:44,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:29:44,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:44,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:45,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:45,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940148792] [2021-10-07 16:29:45,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940148792] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:45,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:45,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 16:29:45,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294571361] [2021-10-07 16:29:45,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:29:45,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:45,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:29:45,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:29:45,149 INFO L87 Difference]: Start difference. First operand 154 states and 424 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:46,453 INFO L93 Difference]: Finished difference Result 188 states and 508 transitions. [2021-10-07 16:29:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:29:46,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:29:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:46,457 INFO L225 Difference]: With dead ends: 188 [2021-10-07 16:29:46,458 INFO L226 Difference]: Without dead ends: 186 [2021-10-07 16:29:46,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1258.5ms TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:29:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-07 16:29:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 140. [2021-10-07 16:29:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.7553956834532376) internal successors, (383), 139 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 383 transitions. [2021-10-07 16:29:46,465 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 383 transitions. Word has length 16 [2021-10-07 16:29:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:46,465 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 383 transitions. [2021-10-07 16:29:46,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 383 transitions. [2021-10-07 16:29:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:29:46,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:46,467 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:46,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:46,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:46,680 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1481033025, now seen corresponding path program 13 times [2021-10-07 16:29:46,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:46,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676987093] [2021-10-07 16:29:46,683 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:29:46,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:46,684 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:46,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 16:29:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:46,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:29:46,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:46,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:47,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:47,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676987093] [2021-10-07 16:29:47,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676987093] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:47,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:47,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 7 [2021-10-07 16:29:47,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812811527] [2021-10-07 16:29:47,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 16:29:47,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:47,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 16:29:47,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:29:47,355 INFO L87 Difference]: Start difference. First operand 140 states and 383 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:47,422 INFO L93 Difference]: Finished difference Result 217 states and 561 transitions. [2021-10-07 16:29:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:29:47,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 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 17 [2021-10-07 16:29:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:47,425 INFO L225 Difference]: With dead ends: 217 [2021-10-07 16:29:47,425 INFO L226 Difference]: Without dead ends: 194 [2021-10-07 16:29:47,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:29:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-07 16:29:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2021-10-07 16:29:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.705521472392638) internal successors, (441), 163 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 441 transitions. [2021-10-07 16:29:47,434 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 441 transitions. Word has length 17 [2021-10-07 16:29:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:47,434 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 441 transitions. [2021-10-07 16:29:47,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 441 transitions. [2021-10-07 16:29:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:29:47,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:47,439 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:47,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:47,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:47,653 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1243860216, now seen corresponding path program 14 times [2021-10-07 16:29:47,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:47,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389475734] [2021-10-07 16:29:47,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:29:47,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:47,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:47,657 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:47,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 16:29:47,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:47,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:47,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:29:47,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:48,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:49,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:49,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389475734] [2021-10-07 16:29:49,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389475734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:49,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:49,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:29:49,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811195312] [2021-10-07 16:29:49,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:29:49,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:29:49,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:29:49,551 INFO L87 Difference]: Start difference. First operand 164 states and 441 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:29:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:54,266 INFO L93 Difference]: Finished difference Result 374 states and 957 transitions. [2021-10-07 16:29:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:29:54,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:29:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:54,269 INFO L225 Difference]: With dead ends: 374 [2021-10-07 16:29:54,269 INFO L226 Difference]: Without dead ends: 374 [2021-10-07 16:29:54,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 4672.6ms TimeCoverageRelationStatistics Valid=491, Invalid=1489, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:29:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-10-07 16:29:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 182. [2021-10-07 16:29:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.734806629834254) internal successors, (495), 181 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 495 transitions. [2021-10-07 16:29:54,279 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 495 transitions. Word has length 18 [2021-10-07 16:29:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:54,280 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 495 transitions. [2021-10-07 16:29:54,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:29:54,280 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 495 transitions. [2021-10-07 16:29:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:29:54,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:54,281 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:54,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:54,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:54,495 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:29:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2143935674, now seen corresponding path program 15 times [2021-10-07 16:29:54,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:54,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658935128] [2021-10-07 16:29:54,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:29:54,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:54,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:54,499 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:54,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 16:29:54,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:29:54,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:54,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:29:54,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:55,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:56,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:56,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658935128] [2021-10-07 16:29:56,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658935128] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:56,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:56,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:29:56,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545507582] [2021-10-07 16:29:56,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:29:56,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:56,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:29:56,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:29:56,140 INFO L87 Difference]: Start difference. First operand 182 states and 495 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:01,909 INFO L93 Difference]: Finished difference Result 362 states and 878 transitions. [2021-10-07 16:30:01,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 16:30:01,910 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:30:01,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:01,913 INFO L225 Difference]: With dead ends: 362 [2021-10-07 16:30:01,913 INFO L226 Difference]: Without dead ends: 358 [2021-10-07 16:30:01,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 5561.2ms TimeCoverageRelationStatistics Valid=585, Invalid=1767, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:30:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-07 16:30:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 220. [2021-10-07 16:30:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.6940639269406392) internal successors, (590), 219 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 590 transitions. [2021-10-07 16:30:01,924 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 590 transitions. Word has length 18 [2021-10-07 16:30:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:01,925 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 590 transitions. [2021-10-07 16:30:01,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 590 transitions. [2021-10-07 16:30:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:30:01,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:01,926 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:01,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-07 16:30:02,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:02,132 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:30:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash -645676574, now seen corresponding path program 16 times [2021-10-07 16:30:02,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:02,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088685717] [2021-10-07 16:30:02,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:30:02,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:02,136 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:02,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 16:30:02,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:30:02,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:02,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:30:02,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:02,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:04,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:04,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088685717] [2021-10-07 16:30:04,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088685717] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:04,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:04,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:30:04,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926606048] [2021-10-07 16:30:04,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:30:04,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:04,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:30:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:30:04,254 INFO L87 Difference]: Start difference. First operand 220 states and 590 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:13,059 INFO L93 Difference]: Finished difference Result 478 states and 1164 transitions. [2021-10-07 16:30:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 16:30:13,061 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:30:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:13,064 INFO L225 Difference]: With dead ends: 478 [2021-10-07 16:30:13,065 INFO L226 Difference]: Without dead ends: 454 [2021-10-07 16:30:13,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 8763.1ms TimeCoverageRelationStatistics Valid=498, Invalid=1854, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:30:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-07 16:30:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 240. [2021-10-07 16:30:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.7531380753138075) internal successors, (658), 239 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 658 transitions. [2021-10-07 16:30:13,080 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 658 transitions. Word has length 18 [2021-10-07 16:30:13,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:13,080 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 658 transitions. [2021-10-07 16:30:13,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 658 transitions. [2021-10-07 16:30:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:30:13,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:13,082 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:13,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:13,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:13,297 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:30:13,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:13,298 INFO L82 PathProgramCache]: Analyzing trace with hash -874211398, now seen corresponding path program 17 times [2021-10-07 16:30:13,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:13,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250474343] [2021-10-07 16:30:13,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:30:13,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:13,301 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 16:30:13,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:30:13,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:13,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:30:13,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:13,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:15,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:15,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250474343] [2021-10-07 16:30:15,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250474343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:15,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:15,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:30:15,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432576547] [2021-10-07 16:30:15,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:30:15,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:30:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:30:15,052 INFO L87 Difference]: Start difference. First operand 240 states and 658 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:20,652 INFO L93 Difference]: Finished difference Result 484 states and 1232 transitions. [2021-10-07 16:30:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 16:30:20,653 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:30:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:20,656 INFO L225 Difference]: With dead ends: 484 [2021-10-07 16:30:20,656 INFO L226 Difference]: Without dead ends: 476 [2021-10-07 16:30:20,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 5309.9ms TimeCoverageRelationStatistics Valid=613, Invalid=1739, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:30:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-07 16:30:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 250. [2021-10-07 16:30:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.783132530120482) internal successors, (693), 249 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 693 transitions. [2021-10-07 16:30:20,669 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 693 transitions. Word has length 18 [2021-10-07 16:30:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:20,670 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 693 transitions. [2021-10-07 16:30:20,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 693 transitions. [2021-10-07 16:30:20,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:30:20,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:20,671 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:20,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-07 16:30:20,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:20,889 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:30:20,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:20,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1666371170, now seen corresponding path program 18 times [2021-10-07 16:30:20,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:20,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302711709] [2021-10-07 16:30:20,891 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:30:20,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:20,893 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:20,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 16:30:21,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:30:21,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:21,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:30:21,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:21,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:22,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:22,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302711709] [2021-10-07 16:30:22,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302711709] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:22,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:22,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:30:22,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826476254] [2021-10-07 16:30:22,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:30:22,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:30:22,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:30:22,343 INFO L87 Difference]: Start difference. First operand 250 states and 693 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:25,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:25,109 INFO L93 Difference]: Finished difference Result 322 states and 874 transitions. [2021-10-07 16:30:25,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 16:30:25,110 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:30:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:25,112 INFO L225 Difference]: With dead ends: 322 [2021-10-07 16:30:25,112 INFO L226 Difference]: Without dead ends: 320 [2021-10-07 16:30:25,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2650.8ms TimeCoverageRelationStatistics Valid=377, Invalid=883, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:30:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-10-07 16:30:25,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 252. [2021-10-07 16:30:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.7968127490039842) internal successors, (702), 251 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 702 transitions. [2021-10-07 16:30:25,122 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 702 transitions. Word has length 18 [2021-10-07 16:30:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:25,123 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 702 transitions. [2021-10-07 16:30:25,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 702 transitions. [2021-10-07 16:30:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:30:25,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:25,124 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:25,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:25,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:25,339 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:30:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1852638496, now seen corresponding path program 19 times [2021-10-07 16:30:25,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:25,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914072006] [2021-10-07 16:30:25,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:30:25,341 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:25,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:25,342 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:25,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 16:30:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:30:25,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:30:25,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:26,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:27,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:27,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914072006] [2021-10-07 16:30:27,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914072006] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:27,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:27,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:30:27,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15006414] [2021-10-07 16:30:27,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:30:27,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:30:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:30:27,946 INFO L87 Difference]: Start difference. First operand 252 states and 702 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:36,720 INFO L93 Difference]: Finished difference Result 418 states and 1043 transitions. [2021-10-07 16:30:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:30:36,722 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:30:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:36,727 INFO L225 Difference]: With dead ends: 418 [2021-10-07 16:30:36,727 INFO L226 Difference]: Without dead ends: 418 [2021-10-07 16:30:36,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 8450.5ms TimeCoverageRelationStatistics Valid=433, Invalid=1547, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:30:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-07 16:30:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 260. [2021-10-07 16:30:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.810810810810811) internal successors, (728), 259 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 728 transitions. [2021-10-07 16:30:36,740 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 728 transitions. Word has length 18 [2021-10-07 16:30:36,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:36,741 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 728 transitions. [2021-10-07 16:30:36,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 728 transitions. [2021-10-07 16:30:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:30:36,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:36,744 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:36,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:36,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:36,959 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:30:36,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash -741724506, now seen corresponding path program 20 times [2021-10-07 16:30:36,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:36,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016188961] [2021-10-07 16:30:36,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:30:36,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:36,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:36,962 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:36,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 16:30:37,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:30:37,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:37,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:30:37,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:37,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:39,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:39,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016188961] [2021-10-07 16:30:39,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016188961] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:39,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:39,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:30:39,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106171641] [2021-10-07 16:30:39,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:30:39,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:30:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:30:39,290 INFO L87 Difference]: Start difference. First operand 260 states and 728 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:46,821 INFO L93 Difference]: Finished difference Result 516 states and 1301 transitions. [2021-10-07 16:30:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:30:46,822 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:30:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:46,826 INFO L225 Difference]: With dead ends: 516 [2021-10-07 16:30:46,827 INFO L226 Difference]: Without dead ends: 508 [2021-10-07 16:30:46,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 6817.2ms TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:30:46,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-07 16:30:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 290. [2021-10-07 16:30:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.889273356401384) internal successors, (835), 289 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 835 transitions. [2021-10-07 16:30:46,840 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 835 transitions. Word has length 18 [2021-10-07 16:30:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 835 transitions. [2021-10-07 16:30:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 835 transitions. [2021-10-07 16:30:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:30:46,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:46,842 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:46,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:47,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:47,056 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:30:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -575818272, now seen corresponding path program 21 times [2021-10-07 16:30:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:47,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650693938] [2021-10-07 16:30:47,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:30:47,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:47,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:47,060 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:47,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 16:30:47,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:30:47,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:47,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:30:47,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:47,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:49,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:49,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650693938] [2021-10-07 16:30:49,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650693938] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:49,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:49,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:30:49,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855159511] [2021-10-07 16:30:49,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:30:49,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:49,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:30:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:30:49,249 INFO L87 Difference]: Start difference. First operand 290 states and 835 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:57,963 INFO L93 Difference]: Finished difference Result 526 states and 1363 transitions. [2021-10-07 16:30:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:30:57,964 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:30:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:57,968 INFO L225 Difference]: With dead ends: 526 [2021-10-07 16:30:57,968 INFO L226 Difference]: Without dead ends: 518 [2021-10-07 16:30:57,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 8154.1ms TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:30:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-07 16:30:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 304. [2021-10-07 16:30:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 2.924092409240924) internal successors, (886), 303 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 886 transitions. [2021-10-07 16:30:57,982 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 886 transitions. Word has length 18 [2021-10-07 16:30:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:57,983 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 886 transitions. [2021-10-07 16:30:57,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:30:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 886 transitions. [2021-10-07 16:30:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:30:57,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:57,984 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:58,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-07 16:30:58,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:58,198 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:30:58,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:58,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1964764296, now seen corresponding path program 22 times [2021-10-07 16:30:58,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:58,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958284679] [2021-10-07 16:30:58,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:30:58,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:58,201 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:58,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 16:30:58,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:30:58,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:58,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:30:58,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:58,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:00,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:00,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958284679] [2021-10-07 16:31:00,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958284679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:00,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:00,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:31:00,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990255410] [2021-10-07 16:31:00,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:31:00,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:31:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:31:00,077 INFO L87 Difference]: Start difference. First operand 304 states and 886 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) 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) [2021-10-07 16:31:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:05,071 INFO L93 Difference]: Finished difference Result 378 states and 1104 transitions. [2021-10-07 16:31:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:31:05,072 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) 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 [2021-10-07 16:31:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:05,075 INFO L225 Difference]: With dead ends: 378 [2021-10-07 16:31:05,075 INFO L226 Difference]: Without dead ends: 372 [2021-10-07 16:31:05,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 4661.4ms TimeCoverageRelationStatistics Valid=413, Invalid=1069, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 16:31:05,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-07 16:31:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 322. [2021-10-07 16:31:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 2.9626168224299065) internal successors, (951), 321 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 951 transitions. [2021-10-07 16:31:05,086 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 951 transitions. Word has length 18 [2021-10-07 16:31:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:05,086 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 951 transitions. [2021-10-07 16:31:05,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) 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) [2021-10-07 16:31:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 951 transitions. [2021-10-07 16:31:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:31:05,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:05,088 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:05,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:05,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:05,295 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:31:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:05,296 INFO L82 PathProgramCache]: Analyzing trace with hash 174817474, now seen corresponding path program 23 times [2021-10-07 16:31:05,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:05,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933559231] [2021-10-07 16:31:05,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:31:05,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:05,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:05,299 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:05,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 16:31:05,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:31:05,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:05,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:31:05,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:06,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:07,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:07,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933559231] [2021-10-07 16:31:07,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933559231] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:07,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:07,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:31:07,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373333745] [2021-10-07 16:31:07,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:31:07,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:31:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:31:07,388 INFO L87 Difference]: Start difference. First operand 322 states and 951 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:16,171 INFO L93 Difference]: Finished difference Result 574 states and 1482 transitions. [2021-10-07 16:31:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-07 16:31:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:31:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:16,175 INFO L225 Difference]: With dead ends: 574 [2021-10-07 16:31:16,175 INFO L226 Difference]: Without dead ends: 546 [2021-10-07 16:31:16,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 8491.6ms TimeCoverageRelationStatistics Valid=639, Invalid=2441, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 16:31:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-07 16:31:16,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 340. [2021-10-07 16:31:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 2.9793510324483776) internal successors, (1010), 339 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1010 transitions. [2021-10-07 16:31:16,190 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1010 transitions. Word has length 18 [2021-10-07 16:31:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:16,190 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1010 transitions. [2021-10-07 16:31:16,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1010 transitions. [2021-10-07 16:31:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:31:16,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:16,192 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:16,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-07 16:31:16,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:16,407 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:31:16,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash -91542310, now seen corresponding path program 24 times [2021-10-07 16:31:16,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:16,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340891711] [2021-10-07 16:31:16,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:31:16,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:16,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:16,411 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:16,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 16:31:16,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:31:16,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:16,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:31:16,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:17,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:18,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:18,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340891711] [2021-10-07 16:31:18,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340891711] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:18,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:18,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:31:18,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988330700] [2021-10-07 16:31:18,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:31:18,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:31:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:31:18,556 INFO L87 Difference]: Start difference. First operand 340 states and 1010 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:26,815 INFO L93 Difference]: Finished difference Result 556 states and 1495 transitions. [2021-10-07 16:31:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:31:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:31:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:26,819 INFO L225 Difference]: With dead ends: 556 [2021-10-07 16:31:26,819 INFO L226 Difference]: Without dead ends: 552 [2021-10-07 16:31:26,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 7949.9ms TimeCoverageRelationStatistics Valid=601, Invalid=1849, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 16:31:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-10-07 16:31:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 372. [2021-10-07 16:31:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.045822102425876) internal successors, (1130), 371 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1130 transitions. [2021-10-07 16:31:26,834 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1130 transitions. Word has length 18 [2021-10-07 16:31:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:26,835 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 1130 transitions. [2021-10-07 16:31:26,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1130 transitions. [2021-10-07 16:31:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:31:26,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:26,837 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:26,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:27,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:27,051 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:31:27,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:27,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1192386182, now seen corresponding path program 25 times [2021-10-07 16:31:27,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:27,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285961392] [2021-10-07 16:31:27,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:31:27,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:27,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:27,055 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:27,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 16:31:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:31:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:31:27,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:27,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:29,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:29,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285961392] [2021-10-07 16:31:29,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285961392] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:29,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:29,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:31:29,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121129007] [2021-10-07 16:31:29,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:31:29,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:31:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:31:29,835 INFO L87 Difference]: Start difference. First operand 372 states and 1130 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:38,161 INFO L93 Difference]: Finished difference Result 554 states and 1517 transitions. [2021-10-07 16:31:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:31:38,162 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:31:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:38,166 INFO L225 Difference]: With dead ends: 554 [2021-10-07 16:31:38,166 INFO L226 Difference]: Without dead ends: 554 [2021-10-07 16:31:38,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 8144.1ms TimeCoverageRelationStatistics Valid=379, Invalid=1343, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:31:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-07 16:31:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 402. [2021-10-07 16:31:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.039900249376559) internal successors, (1219), 401 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1219 transitions. [2021-10-07 16:31:38,186 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1219 transitions. Word has length 18 [2021-10-07 16:31:38,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:38,186 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1219 transitions. [2021-10-07 16:31:38,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1219 transitions. [2021-10-07 16:31:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:31:38,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:38,188 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:38,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:38,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:38,402 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:31:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash -81472192, now seen corresponding path program 26 times [2021-10-07 16:31:38,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:38,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523611962] [2021-10-07 16:31:38,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:31:38,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:38,405 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:38,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 16:31:38,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:31:38,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:38,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:31:38,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:39,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:41,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:41,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523611962] [2021-10-07 16:31:41,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523611962] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:41,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:41,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:31:41,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64993341] [2021-10-07 16:31:41,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:31:41,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:31:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:31:41,019 INFO L87 Difference]: Start difference. First operand 402 states and 1219 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:48,298 INFO L93 Difference]: Finished difference Result 666 states and 1833 transitions. [2021-10-07 16:31:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:31:48,299 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:31:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:48,303 INFO L225 Difference]: With dead ends: 666 [2021-10-07 16:31:48,303 INFO L226 Difference]: Without dead ends: 658 [2021-10-07 16:31:48,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 6616.8ms TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 16:31:48,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-07 16:31:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 434. [2021-10-07 16:31:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.087759815242494) internal successors, (1337), 433 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1337 transitions. [2021-10-07 16:31:48,320 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1337 transitions. Word has length 18 [2021-10-07 16:31:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:48,321 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1337 transitions. [2021-10-07 16:31:48,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1337 transitions. [2021-10-07 16:31:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:31:48,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:48,323 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:48,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:48,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:48,537 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:31:48,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:48,538 INFO L82 PathProgramCache]: Analyzing trace with hash 84434042, now seen corresponding path program 27 times [2021-10-07 16:31:48,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:48,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243180759] [2021-10-07 16:31:48,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:31:48,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:48,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:48,540 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:48,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 16:31:49,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:31:49,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:49,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:31:49,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:49,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:50,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:50,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243180759] [2021-10-07 16:31:50,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243180759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:50,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:50,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:31:50,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854028294] [2021-10-07 16:31:50,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:31:50,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:31:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:31:50,979 INFO L87 Difference]: Start difference. First operand 434 states and 1337 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:58,091 INFO L93 Difference]: Finished difference Result 672 states and 1893 transitions. [2021-10-07 16:31:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:31:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:31:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:58,095 INFO L225 Difference]: With dead ends: 672 [2021-10-07 16:31:58,095 INFO L226 Difference]: Without dead ends: 664 [2021-10-07 16:31:58,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 6396.5ms TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 16:31:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-07 16:31:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 452. [2021-10-07 16:31:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.1219512195121952) internal successors, (1408), 451 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1408 transitions. [2021-10-07 16:31:58,112 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1408 transitions. Word has length 18 [2021-10-07 16:31:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:58,113 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1408 transitions. [2021-10-07 16:31:58,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:31:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1408 transitions. [2021-10-07 16:31:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:31:58,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:58,115 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:58,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-07 16:31:58,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:58,330 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:31:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1669950686, now seen corresponding path program 28 times [2021-10-07 16:31:58,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:58,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254892935] [2021-10-07 16:31:58,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:31:58,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:58,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:58,334 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:58,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 16:31:58,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:31:58,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:58,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:31:58,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:59,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:00,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:00,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254892935] [2021-10-07 16:32:00,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254892935] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:00,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:00,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:32:00,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374054239] [2021-10-07 16:32:00,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:32:00,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:32:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:32:00,410 INFO L87 Difference]: Start difference. First operand 452 states and 1408 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) 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) [2021-10-07 16:32:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:04,683 INFO L93 Difference]: Finished difference Result 516 states and 1601 transitions. [2021-10-07 16:32:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 16:32:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) 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 [2021-10-07 16:32:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:04,689 INFO L225 Difference]: With dead ends: 516 [2021-10-07 16:32:04,689 INFO L226 Difference]: Without dead ends: 510 [2021-10-07 16:32:04,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4022.7ms TimeCoverageRelationStatistics Valid=263, Invalid=607, Unknown=0, NotChecked=0, Total=870 [2021-10-07 16:32:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-07 16:32:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 450. [2021-10-07 16:32:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.1024498886414253) internal successors, (1393), 449 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1393 transitions. [2021-10-07 16:32:04,703 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1393 transitions. Word has length 18 [2021-10-07 16:32:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:04,703 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1393 transitions. [2021-10-07 16:32:04,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) 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) [2021-10-07 16:32:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1393 transitions. [2021-10-07 16:32:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:32:04,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:04,705 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:04,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:04,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:04,918 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:32:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash 440628730, now seen corresponding path program 29 times [2021-10-07 16:32:04,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:04,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552512486] [2021-10-07 16:32:04,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:32:04,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:04,923 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:04,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 16:32:05,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:32:05,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:05,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:32:05,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:05,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:07,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:07,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552512486] [2021-10-07 16:32:07,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552512486] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:07,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:07,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:32:07,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547843608] [2021-10-07 16:32:07,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:32:07,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:07,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:32:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:32:07,728 INFO L87 Difference]: Start difference. First operand 450 states and 1393 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:17,405 INFO L93 Difference]: Finished difference Result 708 states and 1995 transitions. [2021-10-07 16:32:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:32:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:32:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:17,411 INFO L225 Difference]: With dead ends: 708 [2021-10-07 16:32:17,411 INFO L226 Difference]: Without dead ends: 700 [2021-10-07 16:32:17,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 8760.1ms TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:32:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-07 16:32:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 480. [2021-10-07 16:32:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.127348643006263) internal successors, (1498), 479 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1498 transitions. [2021-10-07 16:32:17,429 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1498 transitions. Word has length 18 [2021-10-07 16:32:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:17,429 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1498 transitions. [2021-10-07 16:32:17,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1498 transitions. [2021-10-07 16:32:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:32:17,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:17,432 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:17,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-07 16:32:17,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:17,646 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:32:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash 568710004, now seen corresponding path program 30 times [2021-10-07 16:32:17,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:17,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286164097] [2021-10-07 16:32:17,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:32:17,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:17,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:17,651 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:17,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 16:32:18,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:32:18,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:18,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:32:18,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:18,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:20,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:20,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286164097] [2021-10-07 16:32:20,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286164097] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:20,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:20,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:32:20,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483860355] [2021-10-07 16:32:20,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:32:20,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:20,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:32:20,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:32:20,043 INFO L87 Difference]: Start difference. First operand 480 states and 1498 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:26,551 INFO L93 Difference]: Finished difference Result 656 states and 1908 transitions. [2021-10-07 16:32:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 16:32:26,552 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:32:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:26,557 INFO L225 Difference]: With dead ends: 656 [2021-10-07 16:32:26,557 INFO L226 Difference]: Without dead ends: 652 [2021-10-07 16:32:26,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 6058.9ms TimeCoverageRelationStatistics Valid=376, Invalid=1030, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 16:32:26,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-10-07 16:32:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 502. [2021-10-07 16:32:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 3.1596806387225547) internal successors, (1583), 501 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1583 transitions. [2021-10-07 16:32:26,571 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1583 transitions. Word has length 18 [2021-10-07 16:32:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:26,572 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1583 transitions. [2021-10-07 16:32:26,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1583 transitions. [2021-10-07 16:32:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:32:26,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:26,574 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:26,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:26,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:26,789 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:32:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash 544383846, now seen corresponding path program 31 times [2021-10-07 16:32:26,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:26,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531007931] [2021-10-07 16:32:26,791 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:32:26,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:26,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:26,793 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:26,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 16:32:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:27,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:32:27,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:27,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:29,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:29,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531007931] [2021-10-07 16:32:29,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531007931] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:29,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:29,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:32:29,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140083315] [2021-10-07 16:32:29,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:32:29,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:32:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:32:29,545 INFO L87 Difference]: Start difference. First operand 502 states and 1583 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:37,472 INFO L93 Difference]: Finished difference Result 662 states and 1919 transitions. [2021-10-07 16:32:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 16:32:37,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:32:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:37,477 INFO L225 Difference]: With dead ends: 662 [2021-10-07 16:32:37,478 INFO L226 Difference]: Without dead ends: 662 [2021-10-07 16:32:37,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 7868.4ms TimeCoverageRelationStatistics Valid=346, Invalid=1294, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:32:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-07 16:32:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 512. [2021-10-07 16:32:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 3.1663405088062624) internal successors, (1618), 511 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1618 transitions. [2021-10-07 16:32:37,493 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1618 transitions. Word has length 18 [2021-10-07 16:32:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:37,493 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1618 transitions. [2021-10-07 16:32:37,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1618 transitions. [2021-10-07 16:32:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:32:37,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:37,496 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:37,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:37,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:37,711 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:32:37,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:37,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297836, now seen corresponding path program 32 times [2021-10-07 16:32:37,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:37,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586474599] [2021-10-07 16:32:37,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:32:37,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:37,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:37,714 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:37,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 16:32:38,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:32:38,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:38,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:32:38,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:38,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:40,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:40,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586474599] [2021-10-07 16:32:40,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586474599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:40,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:40,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:32:40,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443777433] [2021-10-07 16:32:40,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:32:40,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:40,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:32:40,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:32:40,116 INFO L87 Difference]: Start difference. First operand 512 states and 1618 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:47,382 INFO L93 Difference]: Finished difference Result 782 states and 2226 transitions. [2021-10-07 16:32:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:32:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:32:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:47,389 INFO L225 Difference]: With dead ends: 782 [2021-10-07 16:32:47,389 INFO L226 Difference]: Without dead ends: 774 [2021-10-07 16:32:47,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 6624.4ms TimeCoverageRelationStatistics Valid=263, Invalid=997, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:32:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-10-07 16:32:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 530. [2021-10-07 16:32:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.1776937618147447) internal successors, (1681), 529 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1681 transitions. [2021-10-07 16:32:47,414 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1681 transitions. Word has length 18 [2021-10-07 16:32:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:47,414 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1681 transitions. [2021-10-07 16:32:47,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1681 transitions. [2021-10-07 16:32:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:32:47,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:47,417 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:47,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:47,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:47,632 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:32:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:47,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1821204070, now seen corresponding path program 33 times [2021-10-07 16:32:47,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:47,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543874025] [2021-10-07 16:32:47,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:32:47,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:47,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:47,636 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:47,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 16:32:48,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:32:48,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:48,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:32:48,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:48,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:50,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:50,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543874025] [2021-10-07 16:32:50,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543874025] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:50,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:50,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:32:50,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741252694] [2021-10-07 16:32:50,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:32:50,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:32:50,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:32:50,140 INFO L87 Difference]: Start difference. First operand 530 states and 1681 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:58,547 INFO L93 Difference]: Finished difference Result 770 states and 2232 transitions. [2021-10-07 16:32:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:32:58,549 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:32:58,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:58,553 INFO L225 Difference]: With dead ends: 770 [2021-10-07 16:32:58,553 INFO L226 Difference]: Without dead ends: 762 [2021-10-07 16:32:58,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 7939.3ms TimeCoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:32:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-10-07 16:32:58,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 546. [2021-10-07 16:32:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 3.1981651376146787) internal successors, (1743), 545 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1743 transitions. [2021-10-07 16:32:58,570 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1743 transitions. Word has length 18 [2021-10-07 16:32:58,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:58,571 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1743 transitions. [2021-10-07 16:32:58,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:32:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1743 transitions. [2021-10-07 16:32:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:32:58,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:58,573 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:58,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:58,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:58,779 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:32:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash 66819342, now seen corresponding path program 34 times [2021-10-07 16:32:58,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:58,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095384288] [2021-10-07 16:32:58,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:32:58,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:58,782 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:58,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 16:32:59,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:32:59,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:59,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:32:59,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:59,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:00,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:00,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095384288] [2021-10-07 16:33:00,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095384288] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:00,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:00,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:33:00,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671208081] [2021-10-07 16:33:00,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:33:00,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:00,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:33:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:33:00,960 INFO L87 Difference]: Start difference. First operand 546 states and 1743 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) 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) [2021-10-07 16:33:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:04,741 INFO L93 Difference]: Finished difference Result 604 states and 1911 transitions. [2021-10-07 16:33:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 16:33:04,742 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) 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 [2021-10-07 16:33:04,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:04,746 INFO L225 Difference]: With dead ends: 604 [2021-10-07 16:33:04,746 INFO L226 Difference]: Without dead ends: 598 [2021-10-07 16:33:04,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3803.4ms TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:33:04,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-07 16:33:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 498. [2021-10-07 16:33:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.1569416498993963) internal successors, (1569), 497 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1569 transitions. [2021-10-07 16:33:04,758 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1569 transitions. Word has length 18 [2021-10-07 16:33:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:04,758 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1569 transitions. [2021-10-07 16:33:04,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) 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) [2021-10-07 16:33:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1569 transitions. [2021-10-07 16:33:04,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:33:04,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:04,761 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:04,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:04,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:04,975 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:33:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:04,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2117568538, now seen corresponding path program 35 times [2021-10-07 16:33:04,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:04,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127634588] [2021-10-07 16:33:04,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:33:04,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:04,978 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:04,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 16:33:05,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:33:05,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:05,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:33:05,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:05,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:07,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:07,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127634588] [2021-10-07 16:33:07,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127634588] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:07,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:07,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:33:07,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545452017] [2021-10-07 16:33:07,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:33:07,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:07,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:33:07,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:33:07,666 INFO L87 Difference]: Start difference. First operand 498 states and 1569 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:33:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:17,809 INFO L93 Difference]: Finished difference Result 770 states and 2197 transitions. [2021-10-07 16:33:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:33:17,810 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 [2021-10-07 16:33:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:17,815 INFO L225 Difference]: With dead ends: 770 [2021-10-07 16:33:17,815 INFO L226 Difference]: Without dead ends: 762 [2021-10-07 16:33:17,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 9357.0ms TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:33:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-10-07 16:33:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 510. [2021-10-07 16:33:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.168958742632613) internal successors, (1613), 509 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1613 transitions. [2021-10-07 16:33:17,827 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1613 transitions. Word has length 18 [2021-10-07 16:33:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:17,828 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1613 transitions. [2021-10-07 16:33:17,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 16:33:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1613 transitions. [2021-10-07 16:33:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:33:17,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:17,831 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:17,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:18,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:18,046 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:33:18,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:18,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1989487264, now seen corresponding path program 36 times [2021-10-07 16:33:18,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:18,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53211506] [2021-10-07 16:33:18,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:33:18,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:18,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:18,050 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:18,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 16:33:18,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:33:18,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:18,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:33:18,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:18,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:20,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:20,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53211506] [2021-10-07 16:33:20,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53211506] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:20,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:20,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 16:33:20,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418311236] [2021-10-07 16:33:20,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:33:20,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:33:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:33:20,462 INFO L87 Difference]: Start difference. First operand 510 states and 1613 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:27,551 INFO L93 Difference]: Finished difference Result 704 states and 2063 transitions. [2021-10-07 16:33:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:33:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:33:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:27,557 INFO L225 Difference]: With dead ends: 704 [2021-10-07 16:33:27,557 INFO L226 Difference]: Without dead ends: 700 [2021-10-07 16:33:27,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 6936.9ms TimeCoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 16:33:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-07 16:33:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 468. [2021-10-07 16:33:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 3.1734475374732334) internal successors, (1482), 467 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1482 transitions. [2021-10-07 16:33:27,569 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1482 transitions. Word has length 18 [2021-10-07 16:33:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:27,570 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1482 transitions. [2021-10-07 16:33:27,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1482 transitions. [2021-10-07 16:33:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:33:27,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:27,572 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:27,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:27,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:27,774 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:33:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:27,774 INFO L82 PathProgramCache]: Analyzing trace with hash 94100702, now seen corresponding path program 37 times [2021-10-07 16:33:27,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:27,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448689497] [2021-10-07 16:33:27,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:33:27,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:27,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:27,777 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:27,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 16:33:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:33:28,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:33:28,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:28,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:29,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:29,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448689497] [2021-10-07 16:33:29,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448689497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:29,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:29,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 10 [2021-10-07 16:33:29,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508776711] [2021-10-07 16:33:29,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:33:29,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:33:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:33:29,075 INFO L87 Difference]: Start difference. First operand 468 states and 1482 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:29,184 INFO L93 Difference]: Finished difference Result 629 states and 1883 transitions. [2021-10-07 16:33:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:33:29,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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 19 [2021-10-07 16:33:29,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:29,191 INFO L225 Difference]: With dead ends: 629 [2021-10-07 16:33:29,192 INFO L226 Difference]: Without dead ends: 578 [2021-10-07 16:33:29,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 224.6ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:33:29,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-10-07 16:33:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 504. [2021-10-07 16:33:29,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.198807157057654) internal successors, (1609), 503 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1609 transitions. [2021-10-07 16:33:29,204 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1609 transitions. Word has length 19 [2021-10-07 16:33:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:29,205 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1609 transitions. [2021-10-07 16:33:29,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1609 transitions. [2021-10-07 16:33:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:33:29,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:29,206 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:29,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:29,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:29,407 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:33:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:29,408 INFO L82 PathProgramCache]: Analyzing trace with hash 84114922, now seen corresponding path program 38 times [2021-10-07 16:33:29,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:29,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654519721] [2021-10-07 16:33:29,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:33:29,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:29,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:29,410 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:29,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 16:33:30,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:33:30,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:30,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:33:30,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:30,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:31,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:31,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654519721] [2021-10-07 16:33:31,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654519721] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:31,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:31,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:33:31,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259238184] [2021-10-07 16:33:31,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:33:31,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:31,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:33:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:33:31,172 INFO L87 Difference]: Start difference. First operand 504 states and 1609 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:36,612 INFO L93 Difference]: Finished difference Result 1150 states and 3253 transitions. [2021-10-07 16:33:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:33:36,613 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 19 [2021-10-07 16:33:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:36,618 INFO L225 Difference]: With dead ends: 1150 [2021-10-07 16:33:36,619 INFO L226 Difference]: Without dead ends: 1150 [2021-10-07 16:33:36,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 5118.6ms TimeCoverageRelationStatistics Valid=680, Invalid=2076, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 16:33:36,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-10-07 16:33:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 532. [2021-10-07 16:33:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.1412429378531073) internal successors, (1668), 531 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1668 transitions. [2021-10-07 16:33:36,644 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1668 transitions. Word has length 19 [2021-10-07 16:33:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:36,645 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1668 transitions. [2021-10-07 16:33:36,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1668 transitions. [2021-10-07 16:33:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:33:36,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:36,647 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:36,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-07 16:33:36,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:36,862 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:33:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:36,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2017272151, now seen corresponding path program 39 times [2021-10-07 16:33:36,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:36,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228120029] [2021-10-07 16:33:36,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:33:36,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:36,865 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:36,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 16:33:37,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:33:37,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:37,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:33:37,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:37,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:39,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:39,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228120029] [2021-10-07 16:33:39,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228120029] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:39,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:39,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:33:39,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065130380] [2021-10-07 16:33:39,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:33:39,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:33:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:33:39,130 INFO L87 Difference]: Start difference. First operand 532 states and 1668 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:53,041 INFO L93 Difference]: Finished difference Result 1010 states and 2736 transitions. [2021-10-07 16:33:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-07 16:33:53,042 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 19 [2021-10-07 16:33:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:53,045 INFO L225 Difference]: With dead ends: 1010 [2021-10-07 16:33:53,045 INFO L226 Difference]: Without dead ends: 974 [2021-10-07 16:33:53,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 13327.4ms TimeCoverageRelationStatistics Valid=829, Invalid=3077, Unknown=0, NotChecked=0, Total=3906 [2021-10-07 16:33:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-10-07 16:33:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 544. [2021-10-07 16:33:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.134438305709024) internal successors, (1702), 543 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1702 transitions. [2021-10-07 16:33:53,061 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1702 transitions. Word has length 19 [2021-10-07 16:33:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:53,061 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1702 transitions. [2021-10-07 16:33:53,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1702 transitions. [2021-10-07 16:33:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:33:53,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:53,063 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:53,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:53,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:53,267 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:33:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash -924608647, now seen corresponding path program 40 times [2021-10-07 16:33:53,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:53,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012360367] [2021-10-07 16:33:53,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:33:53,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:53,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:53,270 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:53,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 16:33:53,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:33:53,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:53,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:33:53,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:54,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:56,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:56,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012360367] [2021-10-07 16:33:56,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012360367] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:56,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:56,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:33:56,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740079] [2021-10-07 16:33:56,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:33:56,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:33:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:33:56,357 INFO L87 Difference]: Start difference. First operand 544 states and 1702 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:34:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:10,036 INFO L93 Difference]: Finished difference Result 918 states and 2516 transitions. [2021-10-07 16:34:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:34:10,037 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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 19 [2021-10-07 16:34:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:10,040 INFO L225 Difference]: With dead ends: 918 [2021-10-07 16:34:10,040 INFO L226 Difference]: Without dead ends: 898 [2021-10-07 16:34:10,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 12514.0ms TimeCoverageRelationStatistics Valid=581, Invalid=2071, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 16:34:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-10-07 16:34:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 588. [2021-10-07 16:34:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.1669505962521294) internal successors, (1859), 587 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1859 transitions. [2021-10-07 16:34:10,060 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1859 transitions. Word has length 19 [2021-10-07 16:34:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:10,060 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1859 transitions. [2021-10-07 16:34:10,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:34:10,061 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1859 transitions. [2021-10-07 16:34:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:34:10,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:10,062 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:10,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-07 16:34:10,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:34:10,263 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:34:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash -834773743, now seen corresponding path program 41 times [2021-10-07 16:34:10,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:10,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937810968] [2021-10-07 16:34:10,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:34:10,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:10,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:10,267 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:34:10,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 16:34:11,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:34:11,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:11,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:34:11,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:11,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:12,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:12,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937810968] [2021-10-07 16:34:12,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937810968] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:12,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:12,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 16:34:12,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146370797] [2021-10-07 16:34:12,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:34:12,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:34:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:34:12,928 INFO L87 Difference]: Start difference. First operand 588 states and 1859 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 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) [2021-10-07 16:34:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:26,659 INFO L93 Difference]: Finished difference Result 970 states and 2706 transitions. [2021-10-07 16:34:26,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-07 16:34:26,660 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 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 19 [2021-10-07 16:34:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:26,662 INFO L225 Difference]: With dead ends: 970 [2021-10-07 16:34:26,662 INFO L226 Difference]: Without dead ends: 970 [2021-10-07 16:34:26,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 13195.3ms TimeCoverageRelationStatistics Valid=689, Invalid=2733, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 16:34:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-10-07 16:34:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 600. [2021-10-07 16:34:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 3.1636060100166943) internal successors, (1895), 599 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1895 transitions. [2021-10-07 16:34:26,683 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1895 transitions. Word has length 19 [2021-10-07 16:34:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:26,683 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 1895 transitions. [2021-10-07 16:34:26,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 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) [2021-10-07 16:34:26,683 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1895 transitions. [2021-10-07 16:34:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:34:26,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:26,685 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:26,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 16:34:26,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:34:26,886 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:34:26,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash -777657193, now seen corresponding path program 42 times [2021-10-07 16:34:26,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:26,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666330147] [2021-10-07 16:34:26,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:34:26,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:26,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:26,890 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:34:26,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 16:34:27,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:34:27,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:27,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:34:27,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:34:27,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:34:29,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:29,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666330147] [2021-10-07 16:34:29,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666330147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:29,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:29,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:34:29,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591042488] [2021-10-07 16:34:29,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:34:29,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:34:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:34:29,171 INFO L87 Difference]: Start difference. First operand 600 states and 1895 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:35,679 INFO L93 Difference]: Finished difference Result 922 states and 2633 transitions. [2021-10-07 16:34:35,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:34:35,680 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:34:35,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:35,684 INFO L225 Difference]: With dead ends: 922 [2021-10-07 16:34:35,684 INFO L226 Difference]: Without dead ends: 914 [2021-10-07 16:34:35,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 6132.1ms TimeCoverageRelationStatistics Valid=582, Invalid=1674, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:34:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-07 16:34:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 602. [2021-10-07 16:34:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 3.1713810316139766) internal successors, (1906), 601 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1906 transitions. [2021-10-07 16:34:35,701 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1906 transitions. Word has length 19 [2021-10-07 16:34:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:35,701 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1906 transitions. [2021-10-07 16:34:35,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:35,701 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1906 transitions. [2021-10-07 16:34:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:34:35,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:35,703 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:35,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-07 16:34:35,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:34:35,904 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)] === [2021-10-07 16:34:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:35,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2057136662, now seen corresponding path program 43 times [2021-10-07 16:34:35,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:35,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324187932] [2021-10-07 16:34:35,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:34:35,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:35,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:35,907 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) [2021-10-07 16:34:35,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 16:34:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:34:36,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:34:36,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:37,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:38,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:38,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324187932] [2021-10-07 16:34:38,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324187932] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:38,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:38,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:34:38,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489632739] [2021-10-07 16:34:38,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:34:38,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:34:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:34:38,362 INFO L87 Difference]: Start difference. First operand 602 states and 1906 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:34:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:45,690 INFO L93 Difference]: Finished difference Result 928 states and 2668 transitions. [2021-10-07 16:34:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:34:45,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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 19 [2021-10-07 16:34:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:45,695 INFO L225 Difference]: With dead ends: 928 [2021-10-07 16:34:45,695 INFO L226 Difference]: Without dead ends: 928 [2021-10-07 16:34:45,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 6845.9ms TimeCoverageRelationStatistics Valid=535, Invalid=1535, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:34:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-10-07 16:34:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 652. [2021-10-07 16:34:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.175115207373272) internal successors, (2067), 651 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2067 transitions. [2021-10-07 16:34:45,711 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2067 transitions. Word has length 19 [2021-10-07 16:34:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:45,712 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2067 transitions. [2021-10-07 16:34:45,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:34:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2067 transitions. [2021-10-07 16:34:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:34:45,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:45,714 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:45,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 16:34:45,914 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 [2021-10-07 16:34:45,915 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)] === [2021-10-07 16:34:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1931623393, now seen corresponding path program 44 times [2021-10-07 16:34:45,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:45,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316627624] [2021-10-07 16:34:45,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:34:45,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:45,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:45,918 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) [2021-10-07 16:34:45,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 16:34:46,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:34:46,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:46,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:34:46,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:47,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:49,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:49,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316627624] [2021-10-07 16:34:49,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316627624] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:49,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:49,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:34:49,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622027752] [2021-10-07 16:34:49,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:34:49,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:49,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:34:49,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:34:49,531 INFO L87 Difference]: Start difference. First operand 652 states and 2067 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:02,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:02,509 INFO L93 Difference]: Finished difference Result 1022 states and 2884 transitions. [2021-10-07 16:35:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:35:02,510 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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 19 [2021-10-07 16:35:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:02,513 INFO L225 Difference]: With dead ends: 1022 [2021-10-07 16:35:02,514 INFO L226 Difference]: Without dead ends: 1002 [2021-10-07 16:35:02,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 12075.4ms TimeCoverageRelationStatistics Valid=512, Invalid=1840, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:35:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-10-07 16:35:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 694. [2021-10-07 16:35:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.1976911976911975) internal successors, (2216), 693 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2216 transitions. [2021-10-07 16:35:02,532 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2216 transitions. Word has length 19 [2021-10-07 16:35:02,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:02,532 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2216 transitions. [2021-10-07 16:35:02,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2216 transitions. [2021-10-07 16:35:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:35:02,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:02,535 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:02,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-07 16:35:02,735 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 [2021-10-07 16:35:02,736 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:35:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1841788489, now seen corresponding path program 45 times [2021-10-07 16:35:02,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:02,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267436957] [2021-10-07 16:35:02,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:35:02,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:02,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:02,739 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:35:02,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-07 16:35:03,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:35:03,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:03,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:35:03,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:03,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:06,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:06,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267436957] [2021-10-07 16:35:06,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267436957] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:06,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:06,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-10-07 16:35:06,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897965194] [2021-10-07 16:35:06,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:35:06,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:35:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:35:06,190 INFO L87 Difference]: Start difference. First operand 694 states and 2216 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-07 16:35:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:16,076 INFO L93 Difference]: Finished difference Result 1104 states and 3207 transitions. [2021-10-07 16:35:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:35:16,078 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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 19 [2021-10-07 16:35:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:16,080 INFO L225 Difference]: With dead ends: 1104 [2021-10-07 16:35:16,081 INFO L226 Difference]: Without dead ends: 1100 [2021-10-07 16:35:16,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 9345.7ms TimeCoverageRelationStatistics Valid=372, Invalid=1268, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:35:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-07 16:35:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 802. [2021-10-07 16:35:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 3.285892634207241) internal successors, (2632), 801 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2632 transitions. [2021-10-07 16:35:16,100 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2632 transitions. Word has length 19 [2021-10-07 16:35:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:16,100 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2632 transitions. [2021-10-07 16:35:16,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-07 16:35:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2632 transitions. [2021-10-07 16:35:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:35:16,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:16,102 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:16,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-07 16:35:16,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:35:16,304 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:35:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:16,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1890704223, now seen corresponding path program 46 times [2021-10-07 16:35:16,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:16,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953234881] [2021-10-07 16:35:16,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:35:16,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:16,307 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:35:16,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-07 16:35:17,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:35:17,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:17,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:35:17,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:17,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:19,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:19,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953234881] [2021-10-07 16:35:19,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953234881] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:19,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:19,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:35:19,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597307156] [2021-10-07 16:35:19,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:35:19,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:35:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:35:19,741 INFO L87 Difference]: Start difference. First operand 802 states and 2632 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:33,512 INFO L93 Difference]: Finished difference Result 1138 states and 3411 transitions. [2021-10-07 16:35:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:35:33,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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 19 [2021-10-07 16:35:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:33,516 INFO L225 Difference]: With dead ends: 1138 [2021-10-07 16:35:33,517 INFO L226 Difference]: Without dead ends: 1130 [2021-10-07 16:35:33,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 12372.3ms TimeCoverageRelationStatistics Valid=508, Invalid=1844, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:35:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-10-07 16:35:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 864. [2021-10-07 16:35:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.317497103128621) internal successors, (2863), 863 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2863 transitions. [2021-10-07 16:35:33,540 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2863 transitions. Word has length 19 [2021-10-07 16:35:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:33,540 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2863 transitions. [2021-10-07 16:35:33,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2863 transitions. [2021-10-07 16:35:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:35:33,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:33,544 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:33,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-07 16:35:33,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:35:33,757 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:35:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:33,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1784671939, now seen corresponding path program 47 times [2021-10-07 16:35:33,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:33,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962472279] [2021-10-07 16:35:33,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:35:33,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:33,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:33,761 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:35:33,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-07 16:35:34,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:35:34,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:34,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:35:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:35,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:37,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:37,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962472279] [2021-10-07 16:35:37,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962472279] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:37,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:37,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:35:37,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876285250] [2021-10-07 16:35:37,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:35:37,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:35:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:35:37,142 INFO L87 Difference]: Start difference. First operand 864 states and 2863 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:44,990 INFO L93 Difference]: Finished difference Result 1142 states and 3536 transitions. [2021-10-07 16:35:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:35:44,991 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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 19 [2021-10-07 16:35:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:44,995 INFO L225 Difference]: With dead ends: 1142 [2021-10-07 16:35:44,995 INFO L226 Difference]: Without dead ends: 1142 [2021-10-07 16:35:44,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 6695.3ms TimeCoverageRelationStatistics Valid=426, Invalid=1134, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:35:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-10-07 16:35:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 906. [2021-10-07 16:35:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 3.3613259668508286) internal successors, (3042), 905 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 3042 transitions. [2021-10-07 16:35:45,035 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 3042 transitions. Word has length 19 [2021-10-07 16:35:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:45,035 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 3042 transitions. [2021-10-07 16:35:45,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 3042 transitions. [2021-10-07 16:35:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:35:45,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:45,038 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:45,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-07 16:35:45,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:35:45,252 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:35:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash 243126654, now seen corresponding path program 48 times [2021-10-07 16:35:45,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:45,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840735725] [2021-10-07 16:35:45,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:35:45,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:45,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:45,255 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:35:45,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-07 16:35:46,221 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:35:46,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:46,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:35:46,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:35:46,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:35:46,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:46,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840735725] [2021-10-07 16:35:46,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840735725] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:46,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:46,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 16:35:46,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067073460] [2021-10-07 16:35:46,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:35:46,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:35:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:35:46,871 INFO L87 Difference]: Start difference. First operand 906 states and 3042 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:48,042 INFO L93 Difference]: Finished difference Result 1434 states and 4398 transitions. [2021-10-07 16:35:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 16:35:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:35:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:48,046 INFO L225 Difference]: With dead ends: 1434 [2021-10-07 16:35:48,046 INFO L226 Difference]: Without dead ends: 1422 [2021-10-07 16:35:48,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1001.2ms TimeCoverageRelationStatistics Valid=238, Invalid=464, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:35:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-10-07 16:35:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 972. [2021-10-07 16:35:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 3.3316168898043252) internal successors, (3235), 971 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 3235 transitions. [2021-10-07 16:35:48,073 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 3235 transitions. Word has length 19 [2021-10-07 16:35:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:48,073 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 3235 transitions. [2021-10-07 16:35:48,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:48,074 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 3235 transitions. [2021-10-07 16:35:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:35:48,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:48,076 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:48,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-07 16:35:48,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:35:48,277 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:35:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:48,278 INFO L82 PathProgramCache]: Analyzing trace with hash 515591377, now seen corresponding path program 49 times [2021-10-07 16:35:48,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:48,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968492340] [2021-10-07 16:35:48,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:35:48,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:48,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:48,281 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:35:48,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-07 16:35:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:35:49,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:35:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:49,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:51,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:51,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968492340] [2021-10-07 16:35:51,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968492340] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:51,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:51,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:35:51,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9633730] [2021-10-07 16:35:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:35:51,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:35:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:35:51,064 INFO L87 Difference]: Start difference. First operand 972 states and 3235 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:59,499 INFO L93 Difference]: Finished difference Result 1284 states and 3979 transitions. [2021-10-07 16:35:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:35:59,501 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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 19 [2021-10-07 16:35:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:59,507 INFO L225 Difference]: With dead ends: 1284 [2021-10-07 16:35:59,507 INFO L226 Difference]: Without dead ends: 1284 [2021-10-07 16:35:59,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 7484.0ms TimeCoverageRelationStatistics Valid=412, Invalid=1148, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:35:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-10-07 16:35:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 960. [2021-10-07 16:35:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.327424400417101) internal successors, (3191), 959 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3191 transitions. [2021-10-07 16:35:59,538 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3191 transitions. Word has length 19 [2021-10-07 16:35:59,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:59,539 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 3191 transitions. [2021-10-07 16:35:59,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) 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) [2021-10-07 16:35:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3191 transitions. [2021-10-07 16:35:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:35:59,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:59,542 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:59,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-07 16:35:59,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:35:59,756 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:35:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:59,757 INFO L82 PathProgramCache]: Analyzing trace with hash 383903463, now seen corresponding path program 50 times [2021-10-07 16:35:59,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:59,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622371243] [2021-10-07 16:35:59,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:35:59,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:59,759 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:35:59,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-07 16:36:00,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:36:00,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:00,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:36:00,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:01,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:02,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:02,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622371243] [2021-10-07 16:36:02,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622371243] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:02,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:02,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:36:02,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268250345] [2021-10-07 16:36:02,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:36:02,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:36:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:36:02,407 INFO L87 Difference]: Start difference. First operand 960 states and 3191 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:17,384 INFO L93 Difference]: Finished difference Result 1604 states and 4900 transitions. [2021-10-07 16:36:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-07 16:36:17,385 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:36:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:17,391 INFO L225 Difference]: With dead ends: 1604 [2021-10-07 16:36:17,391 INFO L226 Difference]: Without dead ends: 1600 [2021-10-07 16:36:17,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 14411.9ms TimeCoverageRelationStatistics Valid=1250, Invalid=4006, Unknown=0, NotChecked=0, Total=5256 [2021-10-07 16:36:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-10-07 16:36:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1004. [2021-10-07 16:36:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 3.2811565304087735) internal successors, (3291), 1003 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3291 transitions. [2021-10-07 16:36:17,426 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3291 transitions. Word has length 20 [2021-10-07 16:36:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:17,427 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3291 transitions. [2021-10-07 16:36:17,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3291 transitions. [2021-10-07 16:36:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:36:17,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:17,431 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:17,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-07 16:36:17,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:36:17,644 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:36:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:17,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1968606347, now seen corresponding path program 51 times [2021-10-07 16:36:17,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:17,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987631926] [2021-10-07 16:36:17,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:36:17,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:17,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:17,648 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:36:17,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-07 16:36:18,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:36:18,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:18,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:36:18,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:19,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:20,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:20,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987631926] [2021-10-07 16:36:20,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987631926] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:20,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:20,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:36:20,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780941639] [2021-10-07 16:36:20,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:36:20,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:36:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:36:20,115 INFO L87 Difference]: Start difference. First operand 1004 states and 3291 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:34,304 INFO L93 Difference]: Finished difference Result 1670 states and 4789 transitions. [2021-10-07 16:36:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-07 16:36:34,305 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:36:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:34,310 INFO L225 Difference]: With dead ends: 1670 [2021-10-07 16:36:34,310 INFO L226 Difference]: Without dead ends: 1666 [2021-10-07 16:36:34,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 13351.5ms TimeCoverageRelationStatistics Valid=1389, Invalid=5417, Unknown=0, NotChecked=0, Total=6806 [2021-10-07 16:36:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-10-07 16:36:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1054. [2021-10-07 16:36:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1053 states have (on average 3.2564102564102564) internal successors, (3429), 1053 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 3429 transitions. [2021-10-07 16:36:34,344 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 3429 transitions. Word has length 20 [2021-10-07 16:36:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:34,344 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 3429 transitions. [2021-10-07 16:36:34,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 3429 transitions. [2021-10-07 16:36:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:36:34,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:34,347 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:34,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-07 16:36:34,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:36:34,548 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:36:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1270419891, now seen corresponding path program 52 times [2021-10-07 16:36:34,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:34,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247967199] [2021-10-07 16:36:34,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:36:34,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:34,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:34,551 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:36:34,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-07 16:36:35,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:36:35,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:36:35,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:35,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:38,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:38,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247967199] [2021-10-07 16:36:38,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247967199] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:38,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:38,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:36:38,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051943097] [2021-10-07 16:36:38,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:36:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:36:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:36:38,549 INFO L87 Difference]: Start difference. First operand 1054 states and 3429 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:52,759 INFO L93 Difference]: Finished difference Result 1528 states and 4611 transitions. [2021-10-07 16:36:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 16:36:52,761 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:36:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:52,765 INFO L225 Difference]: With dead ends: 1528 [2021-10-07 16:36:52,765 INFO L226 Difference]: Without dead ends: 1520 [2021-10-07 16:36:52,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 14245.7ms TimeCoverageRelationStatistics Valid=853, Invalid=2339, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 16:36:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-10-07 16:36:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1074. [2021-10-07 16:36:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 3.255358807082945) internal successors, (3493), 1073 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 3493 transitions. [2021-10-07 16:36:52,799 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 3493 transitions. Word has length 20 [2021-10-07 16:36:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:52,800 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 3493 transitions. [2021-10-07 16:36:52,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:52,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 3493 transitions. [2021-10-07 16:36:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:36:52,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:52,804 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:52,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-07 16:36:53,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:36:53,017 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:36:53,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:53,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1270162677, now seen corresponding path program 53 times [2021-10-07 16:36:53,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:53,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644838579] [2021-10-07 16:36:53,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:36:53,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:53,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:53,021 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:36:53,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-07 16:36:54,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-07 16:36:54,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:54,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:36:54,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:54,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:55,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:55,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644838579] [2021-10-07 16:36:55,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644838579] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:55,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:55,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:36:55,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514536370] [2021-10-07 16:36:55,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:36:55,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:36:55,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:36:55,703 INFO L87 Difference]: Start difference. First operand 1074 states and 3493 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:37:07,103 INFO L93 Difference]: Finished difference Result 1490 states and 4609 transitions. [2021-10-07 16:37:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-07 16:37:07,103 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) 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 [2021-10-07 16:37:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:37:07,106 INFO L225 Difference]: With dead ends: 1490 [2021-10-07 16:37:07,106 INFO L226 Difference]: Without dead ends: 1486 [2021-10-07 16:37:07,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 11044.5ms TimeCoverageRelationStatistics Valid=1269, Invalid=3701, Unknown=0, NotChecked=0, Total=4970 [2021-10-07 16:37:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-07 16:37:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1076. [2021-10-07 16:37:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 3.253953488372093) internal successors, (3498), 1075 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 3498 transitions. [2021-10-07 16:37:07,133 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 3498 transitions. Word has length 20 [2021-10-07 16:37:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:37:07,134 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 3498 transitions. [2021-10-07 16:37:07,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 3498 transitions. [2021-10-07 16:37:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:37:07,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:37:07,138 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:37:07,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-07 16:37:07,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:37:07,340 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:37:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:37:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1308354033, now seen corresponding path program 54 times [2021-10-07 16:37:07,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:37:07,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673518602] [2021-10-07 16:37:07,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:37:07,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:37:07,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:37:07,344 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:37:07,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-07 16:37:08,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:37:08,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:37:08,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:37:08,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:37:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:08,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:37:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:11,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:37:11,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673518602] [2021-10-07 16:37:11,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673518602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:37:11,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:37:11,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:37:11,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918295139] [2021-10-07 16:37:11,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:37:11,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:37:11,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:37:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:37:11,965 INFO L87 Difference]: Start difference. First operand 1076 states and 3498 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:37:45,742 INFO L93 Difference]: Finished difference Result 1636 states and 4730 transitions. [2021-10-07 16:37:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-07 16:37:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:37:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:37:45,747 INFO L225 Difference]: With dead ends: 1636 [2021-10-07 16:37:45,747 INFO L226 Difference]: Without dead ends: 1636 [2021-10-07 16:37:45,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 31392.8ms TimeCoverageRelationStatistics Valid=933, Invalid=3759, Unknown=0, NotChecked=0, Total=4692 [2021-10-07 16:37:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-07 16:37:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1082. [2021-10-07 16:37:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1081 states have (on average 3.25531914893617) internal successors, (3519), 1081 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 3519 transitions. [2021-10-07 16:37:45,773 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 3519 transitions. Word has length 20 [2021-10-07 16:37:45,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:37:45,773 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 3519 transitions. [2021-10-07 16:37:45,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 3519 transitions. [2021-10-07 16:37:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:37:45,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:37:45,776 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:37:45,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-07 16:37:45,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:37:45,977 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:37:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:37:45,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1229758711, now seen corresponding path program 55 times [2021-10-07 16:37:45,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:37:45,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173970830] [2021-10-07 16:37:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:37:45,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:37:45,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:37:45,981 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:37:45,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-07 16:37:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:37:47,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:37:47,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:37:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:47,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:37:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:50,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:37:50,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173970830] [2021-10-07 16:37:50,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173970830] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:37:50,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:37:50,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:37:50,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645620671] [2021-10-07 16:37:50,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:37:50,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:37:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:37:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:37:50,476 INFO L87 Difference]: Start difference. First operand 1082 states and 3519 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:38:11,090 INFO L93 Difference]: Finished difference Result 1536 states and 4509 transitions. [2021-10-07 16:38:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-07 16:38:11,092 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:38:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:38:11,095 INFO L225 Difference]: With dead ends: 1536 [2021-10-07 16:38:11,095 INFO L226 Difference]: Without dead ends: 1516 [2021-10-07 16:38:11,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 19142.6ms TimeCoverageRelationStatistics Valid=605, Invalid=2365, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:38:11,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-07 16:38:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1106. [2021-10-07 16:38:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.260633484162896) internal successors, (3603), 1105 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3603 transitions. [2021-10-07 16:38:11,122 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3603 transitions. Word has length 20 [2021-10-07 16:38:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:38:11,122 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 3603 transitions. [2021-10-07 16:38:11,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3603 transitions. [2021-10-07 16:38:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:38:11,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:38:11,126 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:38:11,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-07 16:38:11,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:38:11,339 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:38:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:38:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash -381632753, now seen corresponding path program 56 times [2021-10-07 16:38:11,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:38:11,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572273826] [2021-10-07 16:38:11,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:38:11,341 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:38:11,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:38:11,342 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:38:11,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-07 16:38:12,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:38:12,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:38:12,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:38:12,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:12,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:38:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:15,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:38:15,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572273826] [2021-10-07 16:38:15,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572273826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:38:15,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:38:15,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:38:15,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121775285] [2021-10-07 16:38:15,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:38:15,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:38:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:38:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:38:15,244 INFO L87 Difference]: Start difference. First operand 1106 states and 3603 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:48,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:38:48,550 INFO L93 Difference]: Finished difference Result 2004 states and 5658 transitions. [2021-10-07 16:38:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-07 16:38:48,552 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:38:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:38:48,556 INFO L225 Difference]: With dead ends: 2004 [2021-10-07 16:38:48,556 INFO L226 Difference]: Without dead ends: 1972 [2021-10-07 16:38:48,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2445 ImplicationChecksByTransitivity, 32096.1ms TimeCoverageRelationStatistics Valid=1418, Invalid=6592, Unknown=0, NotChecked=0, Total=8010 [2021-10-07 16:38:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-10-07 16:38:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1144. [2021-10-07 16:38:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.266841644794401) internal successors, (3734), 1143 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:48,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 3734 transitions. [2021-10-07 16:38:48,583 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 3734 transitions. Word has length 20 [2021-10-07 16:38:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:38:48,583 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 3734 transitions. [2021-10-07 16:38:48,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 3734 transitions. [2021-10-07 16:38:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:38:48,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:38:48,586 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:38:48,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2021-10-07 16:38:48,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:38:48,787 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:38:48,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:38:48,788 INFO L82 PathProgramCache]: Analyzing trace with hash -610167577, now seen corresponding path program 57 times [2021-10-07 16:38:48,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:38:48,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406722840] [2021-10-07 16:38:48,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:38:48,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:38:48,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:38:48,790 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:38:48,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-07 16:38:49,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:38:49,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:38:49,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:38:49,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:50,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:38:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:52,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:38:52,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406722840] [2021-10-07 16:38:52,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406722840] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:38:52,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:38:52,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:38:52,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004599619] [2021-10-07 16:38:52,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:38:52,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:38:52,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:38:52,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:38:52,960 INFO L87 Difference]: Start difference. First operand 1144 states and 3734 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:39:15,437 INFO L93 Difference]: Finished difference Result 1660 states and 4866 transitions. [2021-10-07 16:39:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-07 16:39:15,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:39:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:39:15,442 INFO L225 Difference]: With dead ends: 1660 [2021-10-07 16:39:15,442 INFO L226 Difference]: Without dead ends: 1648 [2021-10-07 16:39:15,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 21064.5ms TimeCoverageRelationStatistics Valid=1048, Invalid=3242, Unknown=0, NotChecked=0, Total=4290 [2021-10-07 16:39:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-10-07 16:39:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1162. [2021-10-07 16:39:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.2704565030146426) internal successors, (3797), 1161 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 3797 transitions. [2021-10-07 16:39:15,478 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 3797 transitions. Word has length 20 [2021-10-07 16:39:15,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:39:15,479 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 3797 transitions. [2021-10-07 16:39:15,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 3797 transitions. [2021-10-07 16:39:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:39:15,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:39:15,492 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:39:15,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-07 16:39:15,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:39:15,707 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:39:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:39:15,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1930414991, now seen corresponding path program 58 times [2021-10-07 16:39:15,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:39:15,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305528695] [2021-10-07 16:39:15,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:39:15,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:39:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:39:15,710 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:39:15,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-07 16:39:16,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:39:16,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:39:16,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:39:16,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:39:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:17,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:39:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:19,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:39:19,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305528695] [2021-10-07 16:39:19,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305528695] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:39:19,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:39:19,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:39:19,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516617303] [2021-10-07 16:39:19,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:39:19,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:39:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:39:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:39:19,546 INFO L87 Difference]: Start difference. First operand 1162 states and 3797 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:39:36,583 INFO L93 Difference]: Finished difference Result 1336 states and 4319 transitions. [2021-10-07 16:39:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-07 16:39:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) 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 [2021-10-07 16:39:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:39:36,587 INFO L225 Difference]: With dead ends: 1336 [2021-10-07 16:39:36,587 INFO L226 Difference]: Without dead ends: 1330 [2021-10-07 16:39:36,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 16185.1ms TimeCoverageRelationStatistics Valid=815, Invalid=2265, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 16:39:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-07 16:39:36,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1156. [2021-10-07 16:39:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 3.272727272727273) internal successors, (3780), 1155 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 3780 transitions. [2021-10-07 16:39:36,614 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 3780 transitions. Word has length 20 [2021-10-07 16:39:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:39:36,614 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 3780 transitions. [2021-10-07 16:39:36,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 3780 transitions. [2021-10-07 16:39:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:39:36,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:39:36,617 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:39:36,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-07 16:39:36,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:39:36,818 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:39:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:39:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1413238893, now seen corresponding path program 59 times [2021-10-07 16:39:36,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:39:36,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123431890] [2021-10-07 16:39:36,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:39:36,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:39:36,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:39:36,822 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:39:36,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-07 16:39:37,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:39:37,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:39:37,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:39:37,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:39:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:38,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:39:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:39,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:39:39,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123431890] [2021-10-07 16:39:39,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123431890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:39:39,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:39:39,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:39:39,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534560933] [2021-10-07 16:39:39,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:39:39,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:39:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:39:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:39:39,689 INFO L87 Difference]: Start difference. First operand 1156 states and 3780 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:40:00,748 INFO L93 Difference]: Finished difference Result 1774 states and 5188 transitions. [2021-10-07 16:40:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-07 16:40:00,749 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:40:00,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:40:00,753 INFO L225 Difference]: With dead ends: 1774 [2021-10-07 16:40:00,753 INFO L226 Difference]: Without dead ends: 1742 [2021-10-07 16:40:00,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 20052.0ms TimeCoverageRelationStatistics Valid=1050, Invalid=5592, Unknown=0, NotChecked=0, Total=6642 [2021-10-07 16:40:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-10-07 16:40:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1168. [2021-10-07 16:40:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 3.26649528706084) internal successors, (3812), 1167 states have internal predecessors, (3812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3812 transitions. [2021-10-07 16:40:00,790 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3812 transitions. Word has length 20 [2021-10-07 16:40:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:40:00,790 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 3812 transitions. [2021-10-07 16:40:00,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:00,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3812 transitions. [2021-10-07 16:40:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:40:00,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:40:00,794 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:40:00,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-07 16:40:01,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:40:01,010 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:40:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:40:01,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1770814413, now seen corresponding path program 60 times [2021-10-07 16:40:01,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:40:01,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026226838] [2021-10-07 16:40:01,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:40:01,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:40:01,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:40:01,013 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:40:01,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-07 16:40:02,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:40:02,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:40:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:40:02,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:40:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:02,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:40:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:04,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:40:04,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026226838] [2021-10-07 16:40:04,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026226838] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:40:04,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:40:04,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:40:04,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778218018] [2021-10-07 16:40:04,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:40:04,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:40:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:40:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:40:04,848 INFO L87 Difference]: Start difference. First operand 1168 states and 3812 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:40:33,387 INFO L93 Difference]: Finished difference Result 1808 states and 5301 transitions. [2021-10-07 16:40:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-07 16:40:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:40:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:40:33,392 INFO L225 Difference]: With dead ends: 1808 [2021-10-07 16:40:33,392 INFO L226 Difference]: Without dead ends: 1776 [2021-10-07 16:40:33,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 27531.9ms TimeCoverageRelationStatistics Valid=1022, Invalid=4090, Unknown=0, NotChecked=0, Total=5112 [2021-10-07 16:40:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-10-07 16:40:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1184. [2021-10-07 16:40:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 3.2561284868977176) internal successors, (3852), 1183 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3852 transitions. [2021-10-07 16:40:33,416 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3852 transitions. Word has length 20 [2021-10-07 16:40:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:40:33,416 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 3852 transitions. [2021-10-07 16:40:33,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3852 transitions. [2021-10-07 16:40:33,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:40:33,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:40:33,419 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:40:33,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-07 16:40:33,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:40:33,620 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:40:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:40:33,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1642733139, now seen corresponding path program 61 times [2021-10-07 16:40:33,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:40:33,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950025167] [2021-10-07 16:40:33,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:40:33,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:40:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:40:33,624 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:40:33,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-07 16:40:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:40:34,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:40:34,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:40:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:35,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:40:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:37,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:40:37,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950025167] [2021-10-07 16:40:37,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950025167] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:40:37,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:40:37,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:40:37,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689591009] [2021-10-07 16:40:37,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:40:37,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:40:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:40:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:40:37,213 INFO L87 Difference]: Start difference. First operand 1184 states and 3852 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:41:02,635 INFO L93 Difference]: Finished difference Result 1748 states and 5312 transitions. [2021-10-07 16:41:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-07 16:41:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) 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 [2021-10-07 16:41:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:41:02,640 INFO L225 Difference]: With dead ends: 1748 [2021-10-07 16:41:02,640 INFO L226 Difference]: Without dead ends: 1744 [2021-10-07 16:41:02,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 24134.9ms TimeCoverageRelationStatistics Valid=1282, Invalid=3688, Unknown=0, NotChecked=0, Total=4970 [2021-10-07 16:41:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-10-07 16:41:02,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1200. [2021-10-07 16:41:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1199 states have (on average 3.261050875729775) internal successors, (3910), 1199 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 3910 transitions. [2021-10-07 16:41:02,665 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 3910 transitions. Word has length 20 [2021-10-07 16:41:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:41:02,665 INFO L470 AbstractCegarLoop]: Abstraction has 1200 states and 3910 transitions. [2021-10-07 16:41:02,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 3910 transitions. [2021-10-07 16:41:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:41:02,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:41:02,668 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:41:02,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-07 16:41:02,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:41:02,869 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:41:02,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:41:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash -854272433, now seen corresponding path program 62 times [2021-10-07 16:41:02,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:41:02,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773662986] [2021-10-07 16:41:02,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:41:02,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:41:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:41:02,873 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:41:02,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-07 16:41:04,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:41:04,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:41:04,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:41:04,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:41:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:04,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:41:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:06,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:41:06,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773662986] [2021-10-07 16:41:06,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773662986] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:41:06,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:41:06,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:41:06,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752384156] [2021-10-07 16:41:06,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:41:06,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:41:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:41:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:41:06,582 INFO L87 Difference]: Start difference. First operand 1200 states and 3910 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:41:30,319 INFO L93 Difference]: Finished difference Result 1992 states and 5757 transitions. [2021-10-07 16:41:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-07 16:41:30,320 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:41:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:41:30,324 INFO L225 Difference]: With dead ends: 1992 [2021-10-07 16:41:30,325 INFO L226 Difference]: Without dead ends: 1948 [2021-10-07 16:41:30,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 22345.9ms TimeCoverageRelationStatistics Valid=1581, Invalid=6609, Unknown=0, NotChecked=0, Total=8190 [2021-10-07 16:41:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2021-10-07 16:41:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1236. [2021-10-07 16:41:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 3.266396761133603) internal successors, (4034), 1235 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 4034 transitions. [2021-10-07 16:41:30,352 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 4034 transitions. Word has length 20 [2021-10-07 16:41:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:41:30,352 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 4034 transitions. [2021-10-07 16:41:30,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 4034 transitions. [2021-10-07 16:41:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:41:30,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:41:30,356 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:41:30,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-07 16:41:30,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:41:30,572 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:41:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:41:30,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1979598517, now seen corresponding path program 63 times [2021-10-07 16:41:30,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:41:30,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105629273] [2021-10-07 16:41:30,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:41:30,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:41:30,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:41:30,575 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:41:30,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-07 16:41:31,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:41:31,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:41:31,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:41:31,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:41:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:32,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:41:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:33,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:41:33,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105629273] [2021-10-07 16:41:33,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105629273] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:41:33,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:41:33,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:41:33,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711151629] [2021-10-07 16:41:33,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:41:33,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:41:33,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:41:33,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:41:33,386 INFO L87 Difference]: Start difference. First operand 1236 states and 4034 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:41:46,005 INFO L93 Difference]: Finished difference Result 1814 states and 5348 transitions. [2021-10-07 16:41:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-07 16:41:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:41:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:41:46,010 INFO L225 Difference]: With dead ends: 1814 [2021-10-07 16:41:46,010 INFO L226 Difference]: Without dead ends: 1814 [2021-10-07 16:41:46,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 11563.1ms TimeCoverageRelationStatistics Valid=1131, Invalid=5189, Unknown=0, NotChecked=0, Total=6320 [2021-10-07 16:41:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-10-07 16:41:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1238. [2021-10-07 16:41:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.2683912691996766) internal successors, (4043), 1237 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4043 transitions. [2021-10-07 16:41:46,047 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4043 transitions. Word has length 20 [2021-10-07 16:41:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:41:46,047 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4043 transitions. [2021-10-07 16:41:46,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4043 transitions. [2021-10-07 16:41:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:41:46,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:41:46,050 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:41:46,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-07 16:41:46,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:41:46,251 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:41:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:41:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1388647499, now seen corresponding path program 64 times [2021-10-07 16:41:46,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:41:46,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298254819] [2021-10-07 16:41:46,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:41:46,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:41:46,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:41:46,254 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:41:46,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-07 16:41:47,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:41:47,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:41:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:41:47,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:41:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:47,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:41:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:51,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:41:51,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298254819] [2021-10-07 16:41:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298254819] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:41:51,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:41:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:41:51,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064558724] [2021-10-07 16:41:51,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:41:51,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:41:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:41:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:41:51,092 INFO L87 Difference]: Start difference. First operand 1238 states and 4043 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:11,038 INFO L93 Difference]: Finished difference Result 1720 states and 5128 transitions. [2021-10-07 16:42:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:42:11,040 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:42:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:11,044 INFO L225 Difference]: With dead ends: 1720 [2021-10-07 16:42:11,044 INFO L226 Difference]: Without dead ends: 1692 [2021-10-07 16:42:11,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 18915.0ms TimeCoverageRelationStatistics Valid=479, Invalid=1873, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:42:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-10-07 16:42:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1270. [2021-10-07 16:42:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.2710795902285263) internal successors, (4151), 1269 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4151 transitions. [2021-10-07 16:42:11,077 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4151 transitions. Word has length 20 [2021-10-07 16:42:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:11,077 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4151 transitions. [2021-10-07 16:42:11,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4151 transitions. [2021-10-07 16:42:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:42:11,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:11,080 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:11,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2021-10-07 16:42:11,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:11,281 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:11,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:11,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1617182323, now seen corresponding path program 65 times [2021-10-07 16:42:11,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:11,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056602391] [2021-10-07 16:42:11,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:42:11,284 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:11,284 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:11,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-07 16:42:12,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:42:12,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:12,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:42:12,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:12,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:13,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:13,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056602391] [2021-10-07 16:42:13,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056602391] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:13,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:13,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:42:13,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930565749] [2021-10-07 16:42:13,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 16:42:13,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:13,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 16:42:13,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:42:13,908 INFO L87 Difference]: Start difference. First operand 1270 states and 4151 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:24,641 INFO L93 Difference]: Finished difference Result 1772 states and 5318 transitions. [2021-10-07 16:42:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-07 16:42:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 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 20 [2021-10-07 16:42:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:24,646 INFO L225 Difference]: With dead ends: 1772 [2021-10-07 16:42:24,646 INFO L226 Difference]: Without dead ends: 1764 [2021-10-07 16:42:24,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 9242.9ms TimeCoverageRelationStatistics Valid=833, Invalid=2589, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 16:42:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-07 16:42:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1290. [2021-10-07 16:42:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.282389449185415) internal successors, (4231), 1289 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4231 transitions. [2021-10-07 16:42:24,673 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4231 transitions. Word has length 20 [2021-10-07 16:42:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:24,673 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 4231 transitions. [2021-10-07 16:42:24,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4231 transitions. [2021-10-07 16:42:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:42:24,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:24,676 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:24,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:24,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:24,879 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:24,879 INFO L82 PathProgramCache]: Analyzing trace with hash 923400245, now seen corresponding path program 66 times [2021-10-07 16:42:24,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:24,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041453508] [2021-10-07 16:42:24,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:42:24,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:24,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:24,882 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:24,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-07 16:42:26,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-07 16:42:26,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:26,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:42:26,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:26,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:28,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:28,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041453508] [2021-10-07 16:42:28,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041453508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:28,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:28,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-07 16:42:28,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155249924] [2021-10-07 16:42:28,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:42:28,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:42:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:42:28,182 INFO L87 Difference]: Start difference. First operand 1290 states and 4231 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:33,945 INFO L93 Difference]: Finished difference Result 1456 states and 4600 transitions. [2021-10-07 16:42:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 16:42:33,946 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:42:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:33,949 INFO L225 Difference]: With dead ends: 1456 [2021-10-07 16:42:33,949 INFO L226 Difference]: Without dead ends: 1454 [2021-10-07 16:42:33,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 5378.8ms TimeCoverageRelationStatistics Valid=541, Invalid=1351, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 16:42:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-10-07 16:42:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1298. [2021-10-07 16:42:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.2837316885119505) internal successors, (4259), 1297 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4259 transitions. [2021-10-07 16:42:33,972 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 4259 transitions. Word has length 20 [2021-10-07 16:42:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:33,973 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 4259 transitions. [2021-10-07 16:42:33,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 4259 transitions. [2021-10-07 16:42:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:42:33,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:33,976 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:33,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:34,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:34,177 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:34,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1063453237, now seen corresponding path program 67 times [2021-10-07 16:42:34,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:34,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667611269] [2021-10-07 16:42:34,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:42:34,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:34,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:34,180 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:34,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-07 16:42:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:35,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:42:35,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:35,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:39,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:39,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667611269] [2021-10-07 16:42:39,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667611269] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:39,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:39,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:42:39,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36581630] [2021-10-07 16:42:39,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:42:39,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:42:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:42:39,713 INFO L87 Difference]: Start difference. First operand 1298 states and 4259 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-07 16:42:45,316 WARN L223 SmtUtils]: Removed 13 from assertion stack [2021-10-07 16:42:45,316 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:42:45,316 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:42:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 16:42:45,317 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:42:45,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:45,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:45,519 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. [2021-10-07 16:42:45,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:42:45,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:42:45,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:42:45,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:42:45,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:42:45,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:42:45,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:42:45,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:42:45,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:42:45,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:42:45,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:42:45,529 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:42:45,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:42:45,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:42:45 BasicIcfg [2021-10-07 16:42:45,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:42:45,532 INFO L168 Benchmark]: Toolchain (without parser) took 826780.89 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 134.5 MB in the beginning and 121.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 126.3 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:45,532 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 131.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:42:45,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.75 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:45,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.93 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 122.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:45,533 INFO L168 Benchmark]: Boogie Preprocessor took 33.03 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 120.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:45,534 INFO L168 Benchmark]: RCFGBuilder took 786.24 ms. Allocated memory is still 159.4 MB. Free memory was 120.8 MB in the beginning and 138.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:45,534 INFO L168 Benchmark]: TraceAbstraction took 825634.10 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 137.8 MB in the beginning and 121.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 129.8 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:45,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 131.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.75 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.93 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 122.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.03 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 120.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 786.24 ms. Allocated memory is still 159.4 MB. Free memory was 120.8 MB in the beginning and 138.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 825634.10 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 137.8 MB in the beginning and 121.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 129.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7926.4ms, 86 PlacesBefore, 32 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 88 TotalNumberOfCompositions, 656 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 655, positive: 653, positive conditional: 0, positive unconditional: 653, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 335, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 335, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 655, positive: 320, positive conditional: 0, positive unconditional: 320, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 335, unknown conditional: 0, unknown unconditional: 335] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1298states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 108 for 1530ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 825405.5ms, OverallIterations: 74, TraceHistogramMax: 5, EmptinessCheckTime: 152.9ms, AutomataDifference: 634069.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7996.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2940 SDtfs, 10145 SDslu, 20640 SDs, 0 SdLazy, 26135 SolverSat, 5337 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87256.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4374 GetRequests, 1431 SyntacticMatches, 1 SemanticMatches, 2941 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37766 ImplicationChecksByTransitivity, 596874.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1298occurred in iteration=73, InterpolantAutomatonStates: 2739, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1268.7ms AutomataMinimizationTime, 73 MinimizatonAttempts, 17954 StatesRemovedByMinimization, 67 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 481.6ms SsaConstructionTime, 7538.2ms SatisfiabilityAnalysisTime, 121028.2ms InterpolantComputationTime, 1272 NumberOfCodeBlocks, 1272 NumberOfCodeBlocksAsserted, 166 NumberOfCheckSat, 2396 ConstructedInterpolants, 0 QuantifiedInterpolants, 33686 SizeOfPredicates, 488 NumberOfNonLiveVariables, 5578 ConjunctsInSsa, 1154 ConjunctsInUnsatCore, 148 InterpolantComputations, 12 PerfectInterpolantSequences, 106/1446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown