/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-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:28:31,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:28:31,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:28:31,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:28:31,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:28:31,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:28:31,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:28:32,006 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 16:28:32,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:28:32,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:28:32,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:28:32,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:28:32,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:28:32,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:28:32,060 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:28:32,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:28:32,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:28:32,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:28:32,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:28:32,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:28:32,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:28:32,064 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:28:32,064 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:28:32,064 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:28:32,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:28:32,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:28:32,065 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:28:32,065 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:28:32,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:28:32,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:28:32,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:28:32,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:28:32,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:28:32,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:28:32,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:28:32,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:28:32,067 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:28:32,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:28:32,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:28:32,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:28:32,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:28:32,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:28:32,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:28:32,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:28:32,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:28:32,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:28:32,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-10-07 16:28:32,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21f5e4218/99769712491846fa8be4c993bd0a17ef/FLAGc8ada454d [2021-10-07 16:28:33,311 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:28:33,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-10-07 16:28:33,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21f5e4218/99769712491846fa8be4c993bd0a17ef/FLAGc8ada454d [2021-10-07 16:28:33,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21f5e4218/99769712491846fa8be4c993bd0a17ef [2021-10-07 16:28:33,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:28:33,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:28:33,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:28:33,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:28:33,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:28:33,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:28:33" (1/1) ... [2021-10-07 16:28:33,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2336d4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:33, skipping insertion in model container [2021-10-07 16:28:33,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:28:33" (1/1) ... [2021-10-07 16:28:33,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:28:33,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:28:34,032 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-alt.wvr.c[2091,2104] [2021-10-07 16:28:34,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:28:34,065 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:28:34,104 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-alt.wvr.c[2091,2104] [2021-10-07 16:28:34,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:28:34,136 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:28:34,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34 WrapperNode [2021-10-07 16:28:34,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:28:34,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:28:34,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:28:34,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:28:34,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:28:34,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:28:34,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:28:34,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:28:34,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:28:34,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:28:34,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:28:34,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:28:34,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (1/1) ... [2021-10-07 16:28:34,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:28:34,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:28:34,366 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 16:28:34,385 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 16:28:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:28:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:28:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:28:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:28:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:28:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:28:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:28:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:28:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:28:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:28:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:28:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:28:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:28:34,437 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 16:28:35,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:28:35,017 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 16:28:35,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:28:35 BoogieIcfgContainer [2021-10-07 16:28:35,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:28:35,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:28:35,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:28:35,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:28:35,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:28:33" (1/3) ... [2021-10-07 16:28:35,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b21c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:28:35, skipping insertion in model container [2021-10-07 16:28:35,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:28:34" (2/3) ... [2021-10-07 16:28:35,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b21c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:28:35, skipping insertion in model container [2021-10-07 16:28:35,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:28:35" (3/3) ... [2021-10-07 16:28:35,040 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2021-10-07 16:28:35,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:28:35,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 16:28:35,053 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:28:35,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,111 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,111 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,111 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,112 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,114 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,114 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,115 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,115 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,116 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,116 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,119 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,119 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,120 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,120 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,124 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,125 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,125 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,125 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,125 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,128 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,128 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,128 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,129 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,129 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:28:35,135 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:28:35,189 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:28:35,198 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 16:28:35,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 16:28:35,215 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:28:35,228 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-07 16:28:35,231 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-07 16:28:35,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 192 flow [2021-10-07 16:28:35,284 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2021-10-07 16:28:35,284 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:28:35,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-07 16:28:35,292 INFO L116 LiptonReduction]: Number of co-enabled transitions 540 [2021-10-07 16:28:43,753 INFO L131 LiptonReduction]: Checked pairs total: 707 [2021-10-07 16:28:43,753 INFO L133 LiptonReduction]: Total number of compositions: 90 [2021-10-07 16:28:43,767 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-07 16:28:43,785 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 16:28:43,790 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 16:28:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 16:28:43,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:43,796 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 16:28:43,796 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:28:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash 363, now seen corresponding path program 1 times [2021-10-07 16:28:43,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:43,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878430349] [2021-10-07 16:28:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:43,817 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:43,827 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 16:28:43,846 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 16:28:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:43,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 16:28:43,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:43,915 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 16:28:43,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:43,916 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 16:28:43,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:43,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878430349] [2021-10-07 16:28:43,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878430349] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:43,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:43,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 16:28:43,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558618060] [2021-10-07 16:28:43,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 16:28:43,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 16:28:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:28:43,946 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 16:28:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:43,964 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-07 16:28:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 16:28:43,966 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 16:28:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:43,978 INFO L225 Difference]: With dead ends: 64 [2021-10-07 16:28:43,979 INFO L226 Difference]: Without dead ends: 64 [2021-10-07 16:28:43,980 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 16:28:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-07 16:28:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-07 16:28:44,021 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 16:28:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-07 16:28:44,025 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-07 16:28:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:44,025 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-07 16:28:44,026 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 16:28:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-07 16:28:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:28:44,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:44,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:28:44,038 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 16:28:44,231 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 16:28:44,232 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 16:28:44,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:44,235 INFO L82 PathProgramCache]: Analyzing trace with hash 357559, now seen corresponding path program 1 times [2021-10-07 16:28:44,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:44,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134822906] [2021-10-07 16:28:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:44,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:44,239 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 16:28:44,242 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 16:28:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:44,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:28:44,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:44,565 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:28:44,567 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 16:28:44,672 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 16:28:44,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:44,734 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 16:28:44,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:44,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134822906] [2021-10-07 16:28:44,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134822906] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:44,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:44,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:28:44,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529658244] [2021-10-07 16:28:44,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:28:44,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:44,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:28:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:28:44,740 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 16:28:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:44,777 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-07 16:28:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:28:44,778 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 16:28:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:44,780 INFO L225 Difference]: With dead ends: 58 [2021-10-07 16:28:44,780 INFO L226 Difference]: Without dead ends: 58 [2021-10-07 16:28:44,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:28:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-07 16:28:44,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-07 16:28:44,790 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 16:28:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-07 16:28:44,792 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-07 16:28:44,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:44,792 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-07 16:28:44,793 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 16:28:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-07 16:28:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:28:44,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:44,793 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:28:44,808 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 16:28:45,007 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 16:28:45,009 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 16:28:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:45,010 INFO L82 PathProgramCache]: Analyzing trace with hash 357560, now seen corresponding path program 1 times [2021-10-07 16:28:45,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:45,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579433332] [2021-10-07 16:28:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:45,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:45,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:45,017 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 16:28:45,018 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 16:28:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:45,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:28:45,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:45,209 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:28:45,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-07 16:28:45,571 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 16:28:45,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:45,582 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 16:28:45,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:45,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579433332] [2021-10-07 16:28:45,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579433332] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:45,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:45,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:28:45,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206127007] [2021-10-07 16:28:45,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:28:45,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:28:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:28:45,586 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 16:28:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:45,607 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-07 16:28:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:28:45,608 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 16:28:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:45,609 INFO L225 Difference]: With dead ends: 52 [2021-10-07 16:28:45,610 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:28:45,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:28:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:28:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 16:28:45,616 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 16:28:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-07 16:28:45,618 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-07 16:28:45,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:45,618 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-07 16:28:45,618 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 16:28:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-07 16:28:45,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:28:45,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:45,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:28:45,640 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 16:28:45,832 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 16:28:45,833 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 16:28:45,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash 343621038, now seen corresponding path program 1 times [2021-10-07 16:28:45,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:45,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885523926] [2021-10-07 16:28:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:45,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:45,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:45,838 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 16:28:45,850 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 16:28:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:45,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:28:45,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:46,024 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:28:46,026 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 16:28:46,119 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 16:28:46,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:28:46,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:46,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885523926] [2021-10-07 16:28:46,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885523926] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:46,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:46,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:28:46,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549477914] [2021-10-07 16:28:46,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:28:46,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:28:46,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:28:46,221 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:46,243 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-07 16:28:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:28:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:28:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:46,249 INFO L225 Difference]: With dead ends: 43 [2021-10-07 16:28:46,249 INFO L226 Difference]: Without dead ends: 43 [2021-10-07 16:28:46,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:28:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-07 16:28:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-07 16:28:46,257 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 16:28:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-07 16:28:46,261 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-07 16:28:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:46,262 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-07 16:28:46,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-07 16:28:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:28:46,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:46,263 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:28:46,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-07 16:28:46,475 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 16:28:46,475 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 16:28:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:46,476 INFO L82 PathProgramCache]: Analyzing trace with hash 343621039, now seen corresponding path program 1 times [2021-10-07 16:28:46,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:46,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376896106] [2021-10-07 16:28:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:46,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:46,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:46,480 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 16:28:46,513 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 16:28:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:46,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:28:46,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:46,653 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:28:46,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-07 16:28:46,974 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 16:28:46,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:46,992 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 16:28:46,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:46,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376896106] [2021-10-07 16:28:46,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376896106] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:46,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:46,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:28:46,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129317501] [2021-10-07 16:28:46,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:28:46,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:28:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:28:46,996 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 16:28:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:47,014 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-07 16:28:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:28:47,015 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 16:28:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:47,016 INFO L225 Difference]: With dead ends: 34 [2021-10-07 16:28:47,016 INFO L226 Difference]: Without dead ends: 34 [2021-10-07 16:28:47,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:28:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-07 16:28:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-07 16:28:47,024 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 16:28:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-07 16:28:47,024 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-07 16:28:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:47,026 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-07 16:28:47,026 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 16:28:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-07 16:28:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:28:47,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:47,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:47,041 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 16:28:47,241 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 16:28:47,242 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 16:28:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:47,244 INFO L82 PathProgramCache]: Analyzing trace with hash -242292016, now seen corresponding path program 1 times [2021-10-07 16:28:47,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:47,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077933413] [2021-10-07 16:28:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:47,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:47,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:47,246 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 16:28:47,247 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 16:28:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:47,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:28:47,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:47,377 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 16:28:47,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:47,421 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 16:28:47,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:47,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077933413] [2021-10-07 16:28:47,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077933413] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:47,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:47,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-07 16:28:47,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591131471] [2021-10-07 16:28:47,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:28:47,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:28:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:28:47,427 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:47,484 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2021-10-07 16:28:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:28:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:28:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:47,486 INFO L225 Difference]: With dead ends: 42 [2021-10-07 16:28:47,486 INFO L226 Difference]: Without dead ends: 42 [2021-10-07 16:28:47,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:28:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-07 16:28:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-07 16:28:47,496 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 16:28:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-07 16:28:47,498 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-07 16:28:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:47,498 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-07 16:28:47,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-07 16:28:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:28:47,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:47,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:47,514 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 16:28:47,713 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 16:28:47,714 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 16:28:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:47,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1273089140, now seen corresponding path program 1 times [2021-10-07 16:28:47,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:47,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306446122] [2021-10-07 16:28:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:47,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:47,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:47,718 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 16:28:47,733 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 16:28:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:47,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:28:47,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:28:47,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:28:47,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:47,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306446122] [2021-10-07 16:28:47,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306446122] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:47,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:47,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-07 16:28:47,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498788570] [2021-10-07 16:28:47,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:28:47,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:28:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:28:47,963 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:47,995 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-07 16:28:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:28:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:28:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:47,997 INFO L225 Difference]: With dead ends: 52 [2021-10-07 16:28:47,997 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:28:47,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:28:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:28:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 16:28:48,003 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 16:28:48,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-07 16:28:48,003 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-07 16:28:48,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:48,004 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-07 16:28:48,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-07 16:28:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:28:48,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:48,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:48,018 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 16:28:48,220 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 16:28:48,220 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 16:28:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:48,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1472117858, now seen corresponding path program 1 times [2021-10-07 16:28:48,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:48,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521066308] [2021-10-07 16:28:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:48,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:48,224 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 16:28:48,228 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 16:28:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:48,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:28:48,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:48,463 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 16:28:48,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:48,700 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 16:28:48,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:48,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521066308] [2021-10-07 16:28:48,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521066308] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:48,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:48,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:28:48,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593219174] [2021-10-07 16:28:48,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:28:48,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:28:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:28:48,703 INFO L87 Difference]: Start difference. First operand 52 states and 116 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 16:28:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:48,811 INFO L93 Difference]: Finished difference Result 60 states and 134 transitions. [2021-10-07 16:28:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:28:48,812 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 16:28:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:48,813 INFO L225 Difference]: With dead ends: 60 [2021-10-07 16:28:48,813 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 16:28:48,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:28:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 16:28:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-07 16:28:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 96 transitions. [2021-10-07 16:28:48,819 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 96 transitions. Word has length 15 [2021-10-07 16:28:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:48,819 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 96 transitions. [2021-10-07 16:28:48,819 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 16:28:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 96 transitions. [2021-10-07 16:28:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:28:48,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:48,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:48,839 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 16:28:49,030 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 16:28:49,031 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 16:28:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:49,032 INFO L82 PathProgramCache]: Analyzing trace with hash -293572706, now seen corresponding path program 2 times [2021-10-07 16:28:49,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:49,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464085448] [2021-10-07 16:28:49,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:28:49,033 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:49,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:49,035 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 16:28:49,037 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 16:28:49,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:28:49,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:49,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:28:49,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:49,509 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 16:28:49,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:50,918 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 16:28:50,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:50,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464085448] [2021-10-07 16:28:50,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464085448] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:50,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:50,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:28:50,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028042202] [2021-10-07 16:28:50,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:28:50,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:28:50,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:28:50,922 INFO L87 Difference]: Start difference. First operand 44 states and 96 transitions. Second operand has 16 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 16:28:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:53,037 INFO L93 Difference]: Finished difference Result 164 states and 334 transitions. [2021-10-07 16:28:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:28:53,039 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:28:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:53,041 INFO L225 Difference]: With dead ends: 164 [2021-10-07 16:28:53,042 INFO L226 Difference]: Without dead ends: 134 [2021-10-07 16:28:53,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2196.1ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:28:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-07 16:28:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 68. [2021-10-07 16:28:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.417910447761194) internal successors, (162), 67 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 162 transitions. [2021-10-07 16:28:53,062 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 162 transitions. Word has length 15 [2021-10-07 16:28:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:53,062 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 162 transitions. [2021-10-07 16:28:53,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:28:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 162 transitions. [2021-10-07 16:28:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:28:53,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:53,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:53,085 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 16:28:53,279 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 16:28:53,280 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 16:28:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:53,281 INFO L82 PathProgramCache]: Analyzing trace with hash -211464866, now seen corresponding path program 3 times [2021-10-07 16:28:53,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:53,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394506823] [2021-10-07 16:28:53,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:28:53,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:53,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:53,284 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 16:28:53,285 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 16:28:53,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:28:53,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:53,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:28:53,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:53,792 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 16:28:53,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:55,017 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 16:28:55,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:55,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394506823] [2021-10-07 16:28:55,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394506823] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:55,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:55,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:28:55,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544629607] [2021-10-07 16:28:55,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:28:55,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:55,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:28:55,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:28:55,020 INFO L87 Difference]: Start difference. First operand 68 states and 162 transitions. Second operand has 16 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 16:28:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:56,642 INFO L93 Difference]: Finished difference Result 123 states and 256 transitions. [2021-10-07 16:28:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:28:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:28:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:56,644 INFO L225 Difference]: With dead ends: 123 [2021-10-07 16:28:56,644 INFO L226 Difference]: Without dead ends: 108 [2021-10-07 16:28:56,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1712.9ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:28:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-07 16:28:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 72. [2021-10-07 16:28:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 174 transitions. [2021-10-07 16:28:56,651 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 174 transitions. Word has length 15 [2021-10-07 16:28:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:56,651 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 174 transitions. [2021-10-07 16:28:56,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:28:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 174 transitions. [2021-10-07 16:28:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:28:56,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:56,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:56,668 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 16:28:56,866 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 16:28:56,867 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 16:28:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash -812224624, now seen corresponding path program 4 times [2021-10-07 16:28:56,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:56,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863266808] [2021-10-07 16:28:56,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:28:56,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:56,870 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 16:28:56,871 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 16:28:57,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:28:57,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:28:57,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:28:57,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:57,382 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 16:28:57,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:58,689 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 16:28:58,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:58,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863266808] [2021-10-07 16:28:58,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863266808] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:28:58,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:28:58,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:28:58,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990024793] [2021-10-07 16:28:58,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:28:58,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:28:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:28:58,693 INFO L87 Difference]: Start difference. First operand 72 states and 174 transitions. Second operand has 16 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 16:28:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:59,927 INFO L93 Difference]: Finished difference Result 98 states and 219 transitions. [2021-10-07 16:28:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:28:59,928 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:28:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:59,929 INFO L225 Difference]: With dead ends: 98 [2021-10-07 16:28:59,929 INFO L226 Difference]: Without dead ends: 80 [2021-10-07 16:28:59,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1529.2ms TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:28:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-07 16:28:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2021-10-07 16:28:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.462686567164179) internal successors, (165), 67 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 165 transitions. [2021-10-07 16:28:59,935 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 165 transitions. Word has length 15 [2021-10-07 16:28:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:59,935 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 165 transitions. [2021-10-07 16:28:59,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:28:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 165 transitions. [2021-10-07 16:28:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:28:59,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:59,937 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:59,949 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 16:29:00,141 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 16:29:00,142 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 16:29:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash -678704774, now seen corresponding path program 5 times [2021-10-07 16:29:00,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:00,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062851527] [2021-10-07 16:29:00,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:29:00,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:00,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:00,145 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 16:29:00,147 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 16:29:00,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:00,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:00,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:00,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:00,645 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 16:29:00,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:01,658 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 16:29:01,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:01,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062851527] [2021-10-07 16:29:01,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062851527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:01,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:01,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:29:01,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872783957] [2021-10-07 16:29:01,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:29:01,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:29:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:01,662 INFO L87 Difference]: Start difference. First operand 68 states and 165 transitions. Second operand has 16 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 16:29:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:03,393 INFO L93 Difference]: Finished difference Result 178 states and 379 transitions. [2021-10-07 16:29:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:29:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:29:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:03,396 INFO L225 Difference]: With dead ends: 178 [2021-10-07 16:29:03,396 INFO L226 Difference]: Without dead ends: 148 [2021-10-07 16:29:03,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1704.8ms TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:29:03,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-07 16:29:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 82. [2021-10-07 16:29:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.4691358024691357) internal successors, (200), 81 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 200 transitions. [2021-10-07 16:29:03,402 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 200 transitions. Word has length 15 [2021-10-07 16:29:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:03,403 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 200 transitions. [2021-10-07 16:29:03,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:29:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 200 transitions. [2021-10-07 16:29:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:03,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:03,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:03,418 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 16:29:03,616 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 16:29:03,617 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 16:29:03,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:03,618 INFO L82 PathProgramCache]: Analyzing trace with hash -596596934, now seen corresponding path program 6 times [2021-10-07 16:29:03,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:03,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899291863] [2021-10-07 16:29:03,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:29:03,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:03,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:03,620 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 16:29:03,625 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 16:29:03,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:29:03,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:03,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:03,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:04,167 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 16:29:04,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:05,118 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 16:29:05,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:05,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899291863] [2021-10-07 16:29:05,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899291863] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:05,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:05,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:29:05,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417257493] [2021-10-07 16:29:05,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:29:05,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:29:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:05,121 INFO L87 Difference]: Start difference. First operand 82 states and 200 transitions. Second operand has 16 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 16:29:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:06,697 INFO L93 Difference]: Finished difference Result 141 states and 304 transitions. [2021-10-07 16:29:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 16:29:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:29:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:06,699 INFO L225 Difference]: With dead ends: 141 [2021-10-07 16:29:06,699 INFO L226 Difference]: Without dead ends: 126 [2021-10-07 16:29:06,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1583.9ms TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:29:06,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-07 16:29:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 86. [2021-10-07 16:29:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5176470588235293) internal successors, (214), 85 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:06,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 214 transitions. [2021-10-07 16:29:06,713 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 214 transitions. Word has length 15 [2021-10-07 16:29:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:06,715 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 214 transitions. [2021-10-07 16:29:06,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:29:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 214 transitions. [2021-10-07 16:29:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:06,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:06,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:06,738 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 16:29:06,938 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 16:29:06,938 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 16:29:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:06,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1197356692, now seen corresponding path program 7 times [2021-10-07 16:29:06,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:06,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592384137] [2021-10-07 16:29:06,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:29:06,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:06,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:06,942 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 16:29:06,943 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 16:29:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:07,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:07,481 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 16:29:07,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:08,540 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 16:29:08,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:08,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592384137] [2021-10-07 16:29:08,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592384137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:08,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:08,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:29:08,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379717911] [2021-10-07 16:29:08,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:29:08,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:29:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:08,544 INFO L87 Difference]: Start difference. First operand 86 states and 214 transitions. Second operand has 16 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 16:29:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:09,746 INFO L93 Difference]: Finished difference Result 106 states and 243 transitions. [2021-10-07 16:29:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:29:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:29:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:09,748 INFO L225 Difference]: With dead ends: 106 [2021-10-07 16:29:09,749 INFO L226 Difference]: Without dead ends: 88 [2021-10-07 16:29:09,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1360.2ms TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:29:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-07 16:29:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2021-10-07 16:29:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.546666666666667) internal successors, (191), 75 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 191 transitions. [2021-10-07 16:29:09,753 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 191 transitions. Word has length 15 [2021-10-07 16:29:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:09,754 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 191 transitions. [2021-10-07 16:29:09,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:29:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 191 transitions. [2021-10-07 16:29:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:09,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:09,755 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:09,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 16:29:09,967 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 16:29:09,968 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 16:29:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1232047078, now seen corresponding path program 8 times [2021-10-07 16:29:09,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:09,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489208241] [2021-10-07 16:29:09,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:29:09,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:09,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:09,971 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 16:29:09,972 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 16:29:10,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:10,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:10,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:10,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:10,530 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 16:29:10,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:11,476 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 16:29:11,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:11,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489208241] [2021-10-07 16:29:11,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489208241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:11,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:11,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:29:11,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474757468] [2021-10-07 16:29:11,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:29:11,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:29:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:11,479 INFO L87 Difference]: Start difference. First operand 76 states and 191 transitions. Second operand has 16 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 16:29:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:14,054 INFO L93 Difference]: Finished difference Result 226 states and 493 transitions. [2021-10-07 16:29:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 16:29:14,055 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:29:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:14,057 INFO L225 Difference]: With dead ends: 226 [2021-10-07 16:29:14,057 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 16:29:14,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2242.4ms TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2021-10-07 16:29:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 16:29:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 104. [2021-10-07 16:29:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.533980582524272) internal successors, (261), 103 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 261 transitions. [2021-10-07 16:29:14,086 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 261 transitions. Word has length 15 [2021-10-07 16:29:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:14,086 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 261 transitions. [2021-10-07 16:29:14,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:29:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 261 transitions. [2021-10-07 16:29:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:14,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:14,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:14,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-07 16:29:14,300 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 16:29:14,301 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 16:29:14,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:14,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1149939238, now seen corresponding path program 9 times [2021-10-07 16:29:14,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:14,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361756023] [2021-10-07 16:29:14,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:29:14,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:14,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:14,305 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 16:29:14,306 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 16:29:14,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:29:14,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:14,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:14,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:14,881 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 16:29:14,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:15,765 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 16:29:15,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:15,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361756023] [2021-10-07 16:29:15,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361756023] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:15,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:15,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:29:15,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975671857] [2021-10-07 16:29:15,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:29:15,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:29:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:15,768 INFO L87 Difference]: Start difference. First operand 104 states and 261 transitions. Second operand has 16 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 16:29:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:17,749 INFO L93 Difference]: Finished difference Result 175 states and 388 transitions. [2021-10-07 16:29:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 16:29:17,750 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:29:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:17,752 INFO L225 Difference]: With dead ends: 175 [2021-10-07 16:29:17,752 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 16:29:17,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1955.9ms TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:29:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 16:29:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 102. [2021-10-07 16:29:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.514851485148515) internal successors, (254), 101 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 254 transitions. [2021-10-07 16:29:17,759 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 254 transitions. Word has length 15 [2021-10-07 16:29:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:17,759 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 254 transitions. [2021-10-07 16:29:17,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:29:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 254 transitions. [2021-10-07 16:29:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:17,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:17,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:17,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:17,968 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 16:29:17,969 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 16:29:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:17,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1750698996, now seen corresponding path program 10 times [2021-10-07 16:29:17,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:17,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652271124] [2021-10-07 16:29:17,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:29:17,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:17,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:17,972 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 16:29:17,973 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 16:29:18,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:29:18,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:18,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:18,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:18,531 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 16:29:18,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:19,564 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 16:29:19,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:19,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652271124] [2021-10-07 16:29:19,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652271124] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:19,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:19,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:29:19,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111659735] [2021-10-07 16:29:19,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:29:19,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:29:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:19,567 INFO L87 Difference]: Start difference. First operand 102 states and 254 transitions. Second operand has 16 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 16:29:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:21,387 INFO L93 Difference]: Finished difference Result 154 states and 339 transitions. [2021-10-07 16:29:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:29:21,388 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:29:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:21,390 INFO L225 Difference]: With dead ends: 154 [2021-10-07 16:29:21,390 INFO L226 Difference]: Without dead ends: 136 [2021-10-07 16:29:21,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1862.8ms TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:29:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-07 16:29:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2021-10-07 16:29:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.4742268041237114) internal successors, (240), 97 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 240 transitions. [2021-10-07 16:29:21,396 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 240 transitions. Word has length 15 [2021-10-07 16:29:21,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:21,397 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 240 transitions. [2021-10-07 16:29:21,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:29:21,397 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 240 transitions. [2021-10-07 16:29:21,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:29:21,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:21,398 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:21,412 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 16:29:21,610 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 16:29:21,611 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 16:29:21,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:21,612 INFO L82 PathProgramCache]: Analyzing trace with hash 67957598, now seen corresponding path program 11 times [2021-10-07 16:29:21,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:21,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401247735] [2021-10-07 16:29:21,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:29:21,614 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:21,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:21,615 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 16:29:21,648 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 16:29:21,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:21,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:21,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:29:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:22,204 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 16:29:22,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:23,278 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 16:29:23,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:23,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401247735] [2021-10-07 16:29:23,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401247735] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:23,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:23,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:29:23,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200141835] [2021-10-07 16:29:23,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:29:23,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:29:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:23,282 INFO L87 Difference]: Start difference. First operand 98 states and 240 transitions. Second operand has 16 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 16:29:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:24,720 INFO L93 Difference]: Finished difference Result 128 states and 287 transitions. [2021-10-07 16:29:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 16:29:24,721 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 15 [2021-10-07 16:29:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:24,722 INFO L225 Difference]: With dead ends: 128 [2021-10-07 16:29:24,722 INFO L226 Difference]: Without dead ends: 104 [2021-10-07 16:29:24,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1539.7ms TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:29:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-07 16:29:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2021-10-07 16:29:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 89 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 222 transitions. [2021-10-07 16:29:24,727 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 222 transitions. Word has length 15 [2021-10-07 16:29:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:24,728 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 222 transitions. [2021-10-07 16:29:24,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 16:29:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 222 transitions. [2021-10-07 16:29:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:29:24,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:24,729 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:24,742 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 16:29:24,941 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 16:29:24,942 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 16:29:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:24,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1965291756, now seen corresponding path program 12 times [2021-10-07 16:29:24,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:24,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846230209] [2021-10-07 16:29:24,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:29:24,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:24,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:24,945 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 16:29:24,949 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 16:29:25,275 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:29:25,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:25,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:29:25,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:25,764 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 16:29:25,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:27,810 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 16:29:27,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:27,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846230209] [2021-10-07 16:29:27,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846230209] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:27,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:27,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:29:27,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264287277] [2021-10-07 16:29:27,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:29:27,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:29:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:29:27,812 INFO L87 Difference]: Start difference. First operand 90 states and 222 transitions. Second operand has 20 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 16:29:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:34,794 INFO L93 Difference]: Finished difference Result 282 states and 621 transitions. [2021-10-07 16:29:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:29:34,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:29:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:34,798 INFO L225 Difference]: With dead ends: 282 [2021-10-07 16:29:34,798 INFO L226 Difference]: Without dead ends: 258 [2021-10-07 16:29:34,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 6204.1ms TimeCoverageRelationStatistics Valid=530, Invalid=1362, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 16:29:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-07 16:29:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 120. [2021-10-07 16:29:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.73109243697479) internal successors, (325), 119 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 325 transitions. [2021-10-07 16:29:34,807 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 325 transitions. Word has length 17 [2021-10-07 16:29:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:34,808 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 325 transitions. [2021-10-07 16:29:34,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:29:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 325 transitions. [2021-10-07 16:29:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:29:34,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:34,809 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:34,825 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 16:29:35,022 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 16:29:35,023 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 16:29:35,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:35,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2047399596, now seen corresponding path program 13 times [2021-10-07 16:29:35,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:35,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066332554] [2021-10-07 16:29:35,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:29:35,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:35,028 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 16:29:35,029 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 16:29:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:35,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:29:35,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:35,789 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 16:29:35,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:37,803 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 16:29:37,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:37,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066332554] [2021-10-07 16:29:37,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066332554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:37,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:37,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:29:37,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287782061] [2021-10-07 16:29:37,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:29:37,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:29:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:29:37,806 INFO L87 Difference]: Start difference. First operand 120 states and 325 transitions. Second operand has 20 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 16:29:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:44,317 INFO L93 Difference]: Finished difference Result 251 states and 539 transitions. [2021-10-07 16:29:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:29:44,318 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:29:44,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:44,320 INFO L225 Difference]: With dead ends: 251 [2021-10-07 16:29:44,320 INFO L226 Difference]: Without dead ends: 236 [2021-10-07 16:29:44,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 6202.6ms TimeCoverageRelationStatistics Valid=410, Invalid=1072, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 16:29:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-07 16:29:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 112. [2021-10-07 16:29:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.6036036036036037) internal successors, (289), 111 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 289 transitions. [2021-10-07 16:29:44,328 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 289 transitions. Word has length 17 [2021-10-07 16:29:44,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:44,329 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 289 transitions. [2021-10-07 16:29:44,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:29:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 289 transitions. [2021-10-07 16:29:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:29:44,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:44,330 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:44,343 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 16:29:44,543 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 16:29:44,544 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 16:29:44,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:44,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1446639838, now seen corresponding path program 14 times [2021-10-07 16:29:44,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:44,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340293107] [2021-10-07 16:29:44,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:29:44,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:44,548 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 16:29:44,550 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 16:29:44,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:29:44,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:44,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:29:44,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:45,365 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 16:29:45,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:47,466 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 16:29:47,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:47,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340293107] [2021-10-07 16:29:47,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340293107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:47,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:47,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:29:47,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428472791] [2021-10-07 16:29:47,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:29:47,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:47,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:29:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:29:47,470 INFO L87 Difference]: Start difference. First operand 112 states and 289 transitions. Second operand has 20 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 16:29:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:57,279 INFO L93 Difference]: Finished difference Result 244 states and 548 transitions. [2021-10-07 16:29:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:29:57,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:29:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:57,282 INFO L225 Difference]: With dead ends: 244 [2021-10-07 16:29:57,283 INFO L226 Difference]: Without dead ends: 224 [2021-10-07 16:29:57,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 9123.5ms TimeCoverageRelationStatistics Valid=528, Invalid=1542, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:29:57,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-07 16:29:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 118. [2021-10-07 16:29:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.7777777777777777) internal successors, (325), 117 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 325 transitions. [2021-10-07 16:29:57,290 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 325 transitions. Word has length 17 [2021-10-07 16:29:57,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:57,292 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 325 transitions. [2021-10-07 16:29:57,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:29:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 325 transitions. [2021-10-07 16:29:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:29:57,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:57,294 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:57,307 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 16:29:57,506 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 16:29:57,507 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 16:29:57,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:57,508 INFO L82 PathProgramCache]: Analyzing trace with hash 38007212, now seen corresponding path program 15 times [2021-10-07 16:29:57,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:57,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159147294] [2021-10-07 16:29:57,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:29:57,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:57,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:57,510 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 16:29:57,511 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 16:29:57,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:29:57,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:29:57,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:29:57,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:58,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:00,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:00,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159147294] [2021-10-07 16:30:00,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159147294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:00,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:00,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:00,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783281066] [2021-10-07 16:30:00,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:00,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:00,126 INFO L87 Difference]: Start difference. First operand 118 states and 325 transitions. Second operand has 20 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 16:30:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:05,466 INFO L93 Difference]: Finished difference Result 219 states and 507 transitions. [2021-10-07 16:30:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:30:05,467 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:30:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:05,469 INFO L225 Difference]: With dead ends: 219 [2021-10-07 16:30:05,469 INFO L226 Difference]: Without dead ends: 204 [2021-10-07 16:30:05,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 5327.8ms TimeCoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:30:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-07 16:30:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 128. [2021-10-07 16:30:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.7874015748031495) internal successors, (354), 127 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 354 transitions. [2021-10-07 16:30:05,476 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 354 transitions. Word has length 17 [2021-10-07 16:30:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:05,477 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 354 transitions. [2021-10-07 16:30:05,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:30:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 354 transitions. [2021-10-07 16:30:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:30:05,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:05,477 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:05,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:05,678 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 16:30:05,679 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 16:30:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:05,679 INFO L82 PathProgramCache]: Analyzing trace with hash 930181918, now seen corresponding path program 16 times [2021-10-07 16:30:05,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:05,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558742866] [2021-10-07 16:30:05,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:30:05,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:05,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:05,682 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 16:30:05,683 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 16:30:06,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:30:06,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:06,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:30:06,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:06,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:08,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:08,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558742866] [2021-10-07 16:30:08,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558742866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:08,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:08,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:08,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353879274] [2021-10-07 16:30:08,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:08,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:08,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:08,403 INFO L87 Difference]: Start difference. First operand 128 states and 354 transitions. Second operand has 20 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 16:30:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:12,290 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2021-10-07 16:30:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 16:30:12,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:30:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:12,292 INFO L225 Difference]: With dead ends: 217 [2021-10-07 16:30:12,292 INFO L226 Difference]: Without dead ends: 202 [2021-10-07 16:30:12,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 4073.1ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 16:30:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-07 16:30:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 136. [2021-10-07 16:30:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.740740740740741) internal successors, (370), 135 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 370 transitions. [2021-10-07 16:30:12,301 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 370 transitions. Word has length 17 [2021-10-07 16:30:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:12,302 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 370 transitions. [2021-10-07 16:30:12,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:30:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 370 transitions. [2021-10-07 16:30:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:30:12,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:12,303 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:12,319 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 16:30:12,516 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 16:30:12,517 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 16:30:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:12,518 INFO L82 PathProgramCache]: Analyzing trace with hash 545710992, now seen corresponding path program 17 times [2021-10-07 16:30:12,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:12,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677282745] [2021-10-07 16:30:12,518 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:30:12,519 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:12,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:12,520 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 16:30:12,521 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 16:30:12,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:30:12,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:12,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:30:12,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:13,415 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 16:30:13,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:15,142 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 16:30:15,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:15,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677282745] [2021-10-07 16:30:15,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677282745] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:15,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:15,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:15,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388712239] [2021-10-07 16:30:15,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:15,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:15,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:15,144 INFO L87 Difference]: Start difference. First operand 136 states and 370 transitions. Second operand has 20 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 16:30:23,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:23,247 INFO L93 Difference]: Finished difference Result 388 states and 908 transitions. [2021-10-07 16:30:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:30:23,249 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:30:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:23,253 INFO L225 Difference]: With dead ends: 388 [2021-10-07 16:30:23,253 INFO L226 Difference]: Without dead ends: 368 [2021-10-07 16:30:23,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 7789.5ms TimeCoverageRelationStatistics Valid=635, Invalid=1527, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:30:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-07 16:30:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 178. [2021-10-07 16:30:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2021-10-07 16:30:23,265 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2021-10-07 16:30:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:23,265 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2021-10-07 16:30:23,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:30:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2021-10-07 16:30:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:30:23,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:23,266 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:23,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:23,473 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 16:30:23,474 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 16:30:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:23,474 INFO L82 PathProgramCache]: Analyzing trace with hash 627818832, now seen corresponding path program 18 times [2021-10-07 16:30:23,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:23,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883152249] [2021-10-07 16:30:23,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:30:23,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:23,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:23,477 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 16:30:23,478 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 16:30:24,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:30:24,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:24,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:30:24,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:24,461 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 16:30:24,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:25,948 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 16:30:25,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:25,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883152249] [2021-10-07 16:30:25,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883152249] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:25,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:25,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:25,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681851261] [2021-10-07 16:30:25,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:25,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:25,952 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 20 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 16:30:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:31,231 INFO L93 Difference]: Finished difference Result 363 states and 832 transitions. [2021-10-07 16:30:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:30:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:30:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:31,236 INFO L225 Difference]: With dead ends: 363 [2021-10-07 16:30:31,237 INFO L226 Difference]: Without dead ends: 348 [2021-10-07 16:30:31,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 4874.1ms TimeCoverageRelationStatistics Valid=493, Invalid=1147, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:30:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-07 16:30:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 168. [2021-10-07 16:30:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.820359281437126) internal successors, (471), 167 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 471 transitions. [2021-10-07 16:30:31,247 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 471 transitions. Word has length 17 [2021-10-07 16:30:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:31,248 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 471 transitions. [2021-10-07 16:30:31,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:30:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 471 transitions. [2021-10-07 16:30:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:30:31,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:31,249 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:31,266 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 16:30:31,463 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 16:30:31,463 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 16:30:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash 27059074, now seen corresponding path program 19 times [2021-10-07 16:30:31,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:31,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577996587] [2021-10-07 16:30:31,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:30:31,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:31,466 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 16:30:31,467 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 16:30:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:30:31,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:30:31,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:32,383 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 16:30:32,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:34,032 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 16:30:34,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:34,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577996587] [2021-10-07 16:30:34,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577996587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:34,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:34,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:34,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451686811] [2021-10-07 16:30:34,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:34,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:34,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:34,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:34,035 INFO L87 Difference]: Start difference. First operand 168 states and 471 transitions. Second operand has 20 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 16:30:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:38,968 INFO L93 Difference]: Finished difference Result 334 states and 771 transitions. [2021-10-07 16:30:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:30:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:30:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:38,972 INFO L225 Difference]: With dead ends: 334 [2021-10-07 16:30:38,972 INFO L226 Difference]: Without dead ends: 316 [2021-10-07 16:30:38,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4376.7ms TimeCoverageRelationStatistics Valid=403, Invalid=1157, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:30:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-07 16:30:38,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 174. [2021-10-07 16:30:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.867052023121387) internal successors, (496), 173 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 496 transitions. [2021-10-07 16:30:38,982 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 496 transitions. Word has length 17 [2021-10-07 16:30:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:38,982 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 496 transitions. [2021-10-07 16:30:38,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:30:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 496 transitions. [2021-10-07 16:30:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:30:38,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:38,983 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:38,997 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 16:30:39,196 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 16:30:39,198 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 16:30:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1381573552, now seen corresponding path program 20 times [2021-10-07 16:30:39,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:39,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45857809] [2021-10-07 16:30:39,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:30:39,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:39,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:39,201 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 16:30:39,202 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 16:30:39,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:30:39,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:39,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:30:39,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:40,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:42,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:42,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45857809] [2021-10-07 16:30:42,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45857809] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:42,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:42,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:42,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103686328] [2021-10-07 16:30:42,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:42,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:42,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:42,037 INFO L87 Difference]: Start difference. First operand 174 states and 496 transitions. Second operand has 20 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 16:30:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:46,166 INFO L93 Difference]: Finished difference Result 260 states and 639 transitions. [2021-10-07 16:30:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 16:30:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:30:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:46,170 INFO L225 Difference]: With dead ends: 260 [2021-10-07 16:30:46,170 INFO L226 Difference]: Without dead ends: 250 [2021-10-07 16:30:46,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 4162.1ms TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 16:30:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-07 16:30:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 172. [2021-10-07 16:30:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.8830409356725144) internal successors, (493), 171 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 493 transitions. [2021-10-07 16:30:46,178 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 493 transitions. Word has length 17 [2021-10-07 16:30:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:46,178 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 493 transitions. [2021-10-07 16:30:46,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:30:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 493 transitions. [2021-10-07 16:30:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:30:46,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:46,180 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:46,194 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 16:30:46,392 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 16:30:46,393 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 16:30:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1128718800, now seen corresponding path program 21 times [2021-10-07 16:30:46,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:46,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389576262] [2021-10-07 16:30:46,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:30:46,395 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:46,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:46,396 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 16:30:46,397 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 16:30:46,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:30:46,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:47,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:30:47,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:47,427 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 16:30:47,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:49,130 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 16:30:49,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:49,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389576262] [2021-10-07 16:30:49,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389576262] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:49,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:49,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:49,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983380164] [2021-10-07 16:30:49,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:49,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:49,133 INFO L87 Difference]: Start difference. First operand 172 states and 493 transitions. Second operand has 20 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 16:30:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:53,854 INFO L93 Difference]: Finished difference Result 286 states and 691 transitions. [2021-10-07 16:30:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:30:53,856 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:30:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:53,859 INFO L225 Difference]: With dead ends: 286 [2021-10-07 16:30:53,859 INFO L226 Difference]: Without dead ends: 264 [2021-10-07 16:30:53,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 4359.7ms TimeCoverageRelationStatistics Valid=374, Invalid=1032, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 16:30:53,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-07 16:30:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 172. [2021-10-07 16:30:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.8947368421052633) internal successors, (495), 171 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 16:30:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 495 transitions. [2021-10-07 16:30:53,869 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 495 transitions. Word has length 17 [2021-10-07 16:30:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:53,870 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 495 transitions. [2021-10-07 16:30:53,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:30:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 495 transitions. [2021-10-07 16:30:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:30:53,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:53,871 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:53,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:54,084 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 16:30:54,085 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 16:30:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1220561864, now seen corresponding path program 22 times [2021-10-07 16:30:54,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:54,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835167203] [2021-10-07 16:30:54,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:30:54,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:54,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:54,088 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 16:30:54,090 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 16:30:54,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:30:54,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:54,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:30:54,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:55,088 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 16:30:55,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:57,086 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 16:30:57,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:57,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835167203] [2021-10-07 16:30:57,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835167203] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:57,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:57,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:30:57,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115454276] [2021-10-07 16:30:57,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:30:57,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:57,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:30:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:30:57,088 INFO L87 Difference]: Start difference. First operand 172 states and 495 transitions. Second operand has 20 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 16:31:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:05,565 INFO L93 Difference]: Finished difference Result 415 states and 1008 transitions. [2021-10-07 16:31:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:31:05,566 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:31:05,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:05,569 INFO L225 Difference]: With dead ends: 415 [2021-10-07 16:31:05,569 INFO L226 Difference]: Without dead ends: 386 [2021-10-07 16:31:05,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 7655.3ms TimeCoverageRelationStatistics Valid=591, Invalid=1571, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:31:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-07 16:31:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 216. [2021-10-07 16:31:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0093023255813955) internal successors, (647), 215 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 647 transitions. [2021-10-07 16:31:05,581 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 647 transitions. Word has length 17 [2021-10-07 16:31:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:05,582 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 647 transitions. [2021-10-07 16:31:05,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:31:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 647 transitions. [2021-10-07 16:31:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:31:05,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:05,583 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:05,598 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 16:31:05,796 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 16:31:05,797 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 16:31:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:05,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1302669704, now seen corresponding path program 23 times [2021-10-07 16:31:05,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:05,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946904567] [2021-10-07 16:31:05,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:31:05,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:05,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:05,799 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 16:31:05,801 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 16:31:06,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:31:06,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:06,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:31:06,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:06,850 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 16:31:06,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:08,770 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 16:31:08,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:08,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946904567] [2021-10-07 16:31:08,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946904567] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:08,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:08,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:31:08,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494995595] [2021-10-07 16:31:08,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:31:08,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:31:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:31:08,772 INFO L87 Difference]: Start difference. First operand 216 states and 647 transitions. Second operand has 20 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 16:31:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:15,665 INFO L93 Difference]: Finished difference Result 369 states and 904 transitions. [2021-10-07 16:31:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:31:15,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:31:15,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:15,669 INFO L225 Difference]: With dead ends: 369 [2021-10-07 16:31:15,669 INFO L226 Difference]: Without dead ends: 354 [2021-10-07 16:31:15,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 6370.2ms TimeCoverageRelationStatistics Valid=460, Invalid=1180, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:31:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-07 16:31:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 200. [2021-10-07 16:31:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.899497487437186) internal successors, (577), 199 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 577 transitions. [2021-10-07 16:31:15,679 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 577 transitions. Word has length 17 [2021-10-07 16:31:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:15,680 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 577 transitions. [2021-10-07 16:31:15,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:31:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 577 transitions. [2021-10-07 16:31:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:31:15,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:15,681 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:15,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:15,894 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 16:31:15,895 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 16:31:15,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:15,896 INFO L82 PathProgramCache]: Analyzing trace with hash 701909946, now seen corresponding path program 24 times [2021-10-07 16:31:15,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:15,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718189186] [2021-10-07 16:31:15,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:31:15,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:15,898 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 16:31:15,902 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 16:31:16,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 16:31:16,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:31:16,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:16,992 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 16:31:16,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:19,121 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 16:31:19,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:19,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718189186] [2021-10-07 16:31:19,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718189186] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:19,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:19,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:31:19,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136525416] [2021-10-07 16:31:19,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:31:19,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:19,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:31:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:31:19,124 INFO L87 Difference]: Start difference. First operand 200 states and 577 transitions. Second operand has 20 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 16:31:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:29,712 INFO L93 Difference]: Finished difference Result 356 states and 872 transitions. [2021-10-07 16:31:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 16:31:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:31:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:29,716 INFO L225 Difference]: With dead ends: 356 [2021-10-07 16:31:29,716 INFO L226 Difference]: Without dead ends: 336 [2021-10-07 16:31:29,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 9682.2ms TimeCoverageRelationStatistics Valid=563, Invalid=1693, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:31:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-07 16:31:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 196. [2021-10-07 16:31:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.958974358974359) internal successors, (577), 195 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 577 transitions. [2021-10-07 16:31:29,726 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 577 transitions. Word has length 17 [2021-10-07 16:31:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:29,727 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 577 transitions. [2021-10-07 16:31:29,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:31:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 577 transitions. [2021-10-07 16:31:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:31:29,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:29,728 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:29,743 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 16:31:29,943 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 16:31:29,943 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 16:31:29,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:29,944 INFO L82 PathProgramCache]: Analyzing trace with hash -706722680, now seen corresponding path program 25 times [2021-10-07 16:31:29,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:29,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406227263] [2021-10-07 16:31:29,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:31:29,945 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:29,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:29,946 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 16:31:29,952 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 16:31:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:31:30,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:31:30,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:31,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:32,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:32,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406227263] [2021-10-07 16:31:32,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406227263] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:32,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:32,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:31:32,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452539652] [2021-10-07 16:31:32,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:31:32,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:31:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:31:32,988 INFO L87 Difference]: Start difference. First operand 196 states and 577 transitions. Second operand has 20 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 16:31:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:40,258 INFO L93 Difference]: Finished difference Result 307 states and 782 transitions. [2021-10-07 16:31:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:31:40,259 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:31:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:40,261 INFO L225 Difference]: With dead ends: 307 [2021-10-07 16:31:40,261 INFO L226 Difference]: Without dead ends: 292 [2021-10-07 16:31:40,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 6798.6ms TimeCoverageRelationStatistics Valid=336, Invalid=1386, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:31:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-07 16:31:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 190. [2021-10-07 16:31:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.941798941798942) internal successors, (556), 189 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 556 transitions. [2021-10-07 16:31:40,272 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 556 transitions. Word has length 17 [2021-10-07 16:31:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:40,272 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 556 transitions. [2021-10-07 16:31:40,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:31:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 556 transitions. [2021-10-07 16:31:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:31:40,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:40,274 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:40,289 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 16:31:40,488 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 16:31:40,489 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 16:31:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 185452026, now seen corresponding path program 26 times [2021-10-07 16:31:40,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:40,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34412465] [2021-10-07 16:31:40,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:31:40,491 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:40,492 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 16:31:40,499 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 16:31:41,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:31:41,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:41,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:31:41,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:41,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:31:43,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:43,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34412465] [2021-10-07 16:31:43,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34412465] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:43,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:43,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:31:43,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074119149] [2021-10-07 16:31:43,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:31:43,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:31:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:31:43,486 INFO L87 Difference]: Start difference. First operand 190 states and 556 transitions. Second operand has 20 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 16:31:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:48,181 INFO L93 Difference]: Finished difference Result 291 states and 728 transitions. [2021-10-07 16:31:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 16:31:48,182 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:31:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:48,185 INFO L225 Difference]: With dead ends: 291 [2021-10-07 16:31:48,185 INFO L226 Difference]: Without dead ends: 276 [2021-10-07 16:31:48,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 4680.5ms TimeCoverageRelationStatistics Valid=247, Invalid=943, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 16:31:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-07 16:31:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 192. [2021-10-07 16:31:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.926701570680628) internal successors, (559), 191 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 559 transitions. [2021-10-07 16:31:48,193 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 559 transitions. Word has length 17 [2021-10-07 16:31:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:48,193 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 559 transitions. [2021-10-07 16:31:48,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:31:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 559 transitions. [2021-10-07 16:31:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:31:48,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:48,195 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:48,208 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 16:31:48,401 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 16:31:48,401 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 16:31:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:48,402 INFO L82 PathProgramCache]: Analyzing trace with hash -199018900, now seen corresponding path program 27 times [2021-10-07 16:31:48,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:48,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654344810] [2021-10-07 16:31:48,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:31:48,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:48,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:48,404 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 16:31:48,406 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 16:31:49,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:31:49,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:49,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:31:49,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:49,607 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 16:31:49,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:51,142 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 16:31:51,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:51,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654344810] [2021-10-07 16:31:51,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654344810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:51,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:51,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:31:51,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366774463] [2021-10-07 16:31:51,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:31:51,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:31:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:31:51,145 INFO L87 Difference]: Start difference. First operand 192 states and 559 transitions. Second operand has 20 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 16:31:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:57,039 INFO L93 Difference]: Finished difference Result 483 states and 1171 transitions. [2021-10-07 16:31:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 16:31:57,041 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:31:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:57,043 INFO L225 Difference]: With dead ends: 483 [2021-10-07 16:31:57,043 INFO L226 Difference]: Without dead ends: 458 [2021-10-07 16:31:57,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 5063.3ms TimeCoverageRelationStatistics Valid=549, Invalid=1343, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 16:31:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-07 16:31:57,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 238. [2021-10-07 16:31:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.042194092827004) internal successors, (721), 237 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 721 transitions. [2021-10-07 16:31:57,055 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 721 transitions. Word has length 17 [2021-10-07 16:31:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:57,055 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 721 transitions. [2021-10-07 16:31:57,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:31:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 721 transitions. [2021-10-07 16:31:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:31:57,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:57,057 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:57,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:57,260 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 16:31:57,261 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 16:31:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash -116911060, now seen corresponding path program 28 times [2021-10-07 16:31:57,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:57,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814137309] [2021-10-07 16:31:57,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:31:57,263 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:57,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:57,266 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 16:31:57,267 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 16:31:58,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:31:58,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:58,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:31:58,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:58,468 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 16:31:58,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:00,037 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 16:32:00,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:00,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814137309] [2021-10-07 16:32:00,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814137309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:00,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:00,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:32:00,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966137336] [2021-10-07 16:32:00,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:32:00,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:32:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:32:00,040 INFO L87 Difference]: Start difference. First operand 238 states and 721 transitions. Second operand has 20 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 16:32:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:06,606 INFO L93 Difference]: Finished difference Result 455 states and 1091 transitions. [2021-10-07 16:32:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:32:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:32:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:06,610 INFO L225 Difference]: With dead ends: 455 [2021-10-07 16:32:06,610 INFO L226 Difference]: Without dead ends: 440 [2021-10-07 16:32:06,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 5770.0ms TimeCoverageRelationStatistics Valid=576, Invalid=1404, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:32:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-07 16:32:06,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 226. [2021-10-07 16:32:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.9644444444444447) internal successors, (667), 225 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 667 transitions. [2021-10-07 16:32:06,633 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 667 transitions. Word has length 17 [2021-10-07 16:32:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:06,633 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 667 transitions. [2021-10-07 16:32:06,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:32:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 667 transitions. [2021-10-07 16:32:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:32:06,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:06,635 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:06,653 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 16:32:06,849 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 16:32:06,850 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 16:32:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:06,851 INFO L82 PathProgramCache]: Analyzing trace with hash -717670818, now seen corresponding path program 29 times [2021-10-07 16:32:06,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:06,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100091630] [2021-10-07 16:32:06,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:32:06,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:06,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:06,854 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 16:32:06,855 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 16:32:07,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:32:07,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:07,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:32:07,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:08,100 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 16:32:08,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:10,033 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 16:32:10,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:10,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100091630] [2021-10-07 16:32:10,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100091630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:10,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:10,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:32:10,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061745240] [2021-10-07 16:32:10,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:32:10,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:10,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:32:10,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:32:10,036 INFO L87 Difference]: Start difference. First operand 226 states and 667 transitions. Second operand has 20 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 16:32:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:19,467 INFO L93 Difference]: Finished difference Result 400 states and 990 transitions. [2021-10-07 16:32:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 16:32:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:32:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:19,472 INFO L225 Difference]: With dead ends: 400 [2021-10-07 16:32:19,472 INFO L226 Difference]: Without dead ends: 382 [2021-10-07 16:32:19,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 9090.8ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:32:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-10-07 16:32:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 218. [2021-10-07 16:32:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9262672811059907) internal successors, (635), 217 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 635 transitions. [2021-10-07 16:32:19,479 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 635 transitions. Word has length 17 [2021-10-07 16:32:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:19,479 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 635 transitions. [2021-10-07 16:32:19,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:32:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 635 transitions. [2021-10-07 16:32:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:32:19,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:19,480 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:19,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:19,680 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 16:32:19,681 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 16:32:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:19,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2126303444, now seen corresponding path program 30 times [2021-10-07 16:32:19,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:19,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588200434] [2021-10-07 16:32:19,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:32:19,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:19,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:19,684 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 16:32:19,687 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 16:32:20,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:32:20,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:20,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:32:20,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:20,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:22,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:22,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588200434] [2021-10-07 16:32:22,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588200434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:22,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:22,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:32:22,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451570367] [2021-10-07 16:32:22,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:32:22,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:32:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:32:22,803 INFO L87 Difference]: Start difference. First operand 218 states and 635 transitions. Second operand has 20 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 16:32:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:27,901 INFO L93 Difference]: Finished difference Result 322 states and 817 transitions. [2021-10-07 16:32:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:32:27,902 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:32:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:27,904 INFO L225 Difference]: With dead ends: 322 [2021-10-07 16:32:27,904 INFO L226 Difference]: Without dead ends: 312 [2021-10-07 16:32:27,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 4850.8ms TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:32:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-07 16:32:27,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 216. [2021-10-07 16:32:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.911627906976744) internal successors, (626), 215 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 626 transitions. [2021-10-07 16:32:27,914 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 626 transitions. Word has length 17 [2021-10-07 16:32:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:27,914 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 626 transitions. [2021-10-07 16:32:27,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:32:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 626 transitions. [2021-10-07 16:32:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:32:27,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:27,915 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:27,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-07 16:32:28,128 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 16:32:28,129 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 16:32:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:28,130 INFO L82 PathProgramCache]: Analyzing trace with hash 383988908, now seen corresponding path program 31 times [2021-10-07 16:32:28,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:28,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944945346] [2021-10-07 16:32:28,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:32:28,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:28,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:28,132 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 16:32:28,141 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 16:32:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:29,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:32:29,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:29,420 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 16:32:29,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:31,029 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 16:32:31,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:31,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944945346] [2021-10-07 16:32:31,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944945346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:31,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:31,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:32:31,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124601187] [2021-10-07 16:32:31,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:32:31,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:32:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:32:31,032 INFO L87 Difference]: Start difference. First operand 216 states and 626 transitions. Second operand has 20 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 16:32:35,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:35,801 INFO L93 Difference]: Finished difference Result 346 states and 861 transitions. [2021-10-07 16:32:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:32:35,802 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:32:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:35,804 INFO L225 Difference]: With dead ends: 346 [2021-10-07 16:32:35,804 INFO L226 Difference]: Without dead ends: 324 [2021-10-07 16:32:35,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 4304.3ms TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:32:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-07 16:32:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 176. [2021-10-07 16:32:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.9085714285714284) internal successors, (509), 175 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 509 transitions. [2021-10-07 16:32:35,811 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 509 transitions. Word has length 17 [2021-10-07 16:32:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:35,811 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 509 transitions. [2021-10-07 16:32:35,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:32:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 509 transitions. [2021-10-07 16:32:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:32:35,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:35,813 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:35,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-07 16:32:36,028 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 16:32:36,029 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 16:32:36,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2034552424, now seen corresponding path program 32 times [2021-10-07 16:32:36,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:36,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301266740] [2021-10-07 16:32:36,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:32:36,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:36,033 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 16:32:36,034 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 16:32:36,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:32:36,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:36,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:32:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:37,359 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 16:32:37,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:39,165 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 16:32:39,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:39,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301266740] [2021-10-07 16:32:39,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301266740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:39,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:39,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:32:39,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621825654] [2021-10-07 16:32:39,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:32:39,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:32:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:32:39,167 INFO L87 Difference]: Start difference. First operand 176 states and 509 transitions. Second operand has 20 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 16:32:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:50,523 INFO L93 Difference]: Finished difference Result 455 states and 1118 transitions. [2021-10-07 16:32:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-07 16:32:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:32:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:50,527 INFO L225 Difference]: With dead ends: 455 [2021-10-07 16:32:50,527 INFO L226 Difference]: Without dead ends: 426 [2021-10-07 16:32:50,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 10762.4ms TimeCoverageRelationStatistics Valid=844, Invalid=2696, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 16:32:50,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-10-07 16:32:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 216. [2021-10-07 16:32:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0232558139534884) internal successors, (650), 215 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 650 transitions. [2021-10-07 16:32:50,536 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 650 transitions. Word has length 17 [2021-10-07 16:32:50,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:50,536 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 650 transitions. [2021-10-07 16:32:50,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:32:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 650 transitions. [2021-10-07 16:32:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:32:50,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:50,538 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:50,555 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 16:32:50,751 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 16:32:50,752 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 16:32:50,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:50,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2116660264, now seen corresponding path program 33 times [2021-10-07 16:32:50,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:50,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466948530] [2021-10-07 16:32:50,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:32:50,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:50,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:50,755 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 16:32:50,756 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 16:32:51,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:32:51,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:51,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:32:51,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:52,134 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 16:32:52,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:53,946 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 16:32:53,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:53,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466948530] [2021-10-07 16:32:53,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466948530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:53,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:53,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:32:53,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741276174] [2021-10-07 16:32:53,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:32:53,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:53,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:32:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:32:53,949 INFO L87 Difference]: Start difference. First operand 216 states and 650 transitions. Second operand has 20 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 16:33:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:03,627 INFO L93 Difference]: Finished difference Result 398 states and 992 transitions. [2021-10-07 16:33:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:33:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:33:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:03,630 INFO L225 Difference]: With dead ends: 398 [2021-10-07 16:33:03,630 INFO L226 Difference]: Without dead ends: 388 [2021-10-07 16:33:03,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 9477.9ms TimeCoverageRelationStatistics Valid=620, Invalid=1930, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 16:33:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-07 16:33:03,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 202. [2021-10-07 16:33:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.9303482587064678) internal successors, (589), 201 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 589 transitions. [2021-10-07 16:33:03,643 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 589 transitions. Word has length 17 [2021-10-07 16:33:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:03,644 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 589 transitions. [2021-10-07 16:33:03,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:33:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 589 transitions. [2021-10-07 16:33:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:33:03,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:03,644 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:03,659 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 16:33:03,845 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 16:33:03,845 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 16:33:03,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:03,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1515900506, now seen corresponding path program 34 times [2021-10-07 16:33:03,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:03,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303975348] [2021-10-07 16:33:03,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:33:03,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:03,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:03,849 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 16:33:03,858 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 16:33:04,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:33:04,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:04,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:33:04,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:05,221 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 16:33:05,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:07,078 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 16:33:07,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:07,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303975348] [2021-10-07 16:33:07,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303975348] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:07,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:07,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:33:07,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149886142] [2021-10-07 16:33:07,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:33:07,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:33:07,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:33:07,081 INFO L87 Difference]: Start difference. First operand 202 states and 589 transitions. Second operand has 20 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 16:33:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:19,867 INFO L93 Difference]: Finished difference Result 380 states and 938 transitions. [2021-10-07 16:33:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 16:33:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:33:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:19,872 INFO L225 Difference]: With dead ends: 380 [2021-10-07 16:33:19,873 INFO L226 Difference]: Without dead ends: 360 [2021-10-07 16:33:19,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 10147.8ms TimeCoverageRelationStatistics Valid=652, Invalid=2318, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:33:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-07 16:33:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 198. [2021-10-07 16:33:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.979695431472081) internal successors, (587), 197 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 587 transitions. [2021-10-07 16:33:19,883 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 587 transitions. Word has length 17 [2021-10-07 16:33:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:19,883 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 587 transitions. [2021-10-07 16:33:19,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:33:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 587 transitions. [2021-10-07 16:33:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:33:19,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:19,884 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:19,904 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 16:33:20,097 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 16:33:20,098 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 16:33:20,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:20,098 INFO L82 PathProgramCache]: Analyzing trace with hash 107267880, now seen corresponding path program 35 times [2021-10-07 16:33:20,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:20,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349136245] [2021-10-07 16:33:20,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:33:20,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:20,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:20,101 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 16:33:20,102 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 16:33:21,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:33:21,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:21,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:33:21,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:21,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:22,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:22,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349136245] [2021-10-07 16:33:22,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349136245] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:22,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:22,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:33:22,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340443553] [2021-10-07 16:33:22,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:33:22,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:22,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:33:22,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:33:22,870 INFO L87 Difference]: Start difference. First operand 198 states and 587 transitions. Second operand has 20 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 16:33:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:31,107 INFO L93 Difference]: Finished difference Result 329 states and 836 transitions. [2021-10-07 16:33:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:33:31,108 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:33:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:31,111 INFO L225 Difference]: With dead ends: 329 [2021-10-07 16:33:31,111 INFO L226 Difference]: Without dead ends: 314 [2021-10-07 16:33:31,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 8081.9ms TimeCoverageRelationStatistics Valid=515, Invalid=2137, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 16:33:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-07 16:33:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 200. [2021-10-07 16:33:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9949748743718594) internal successors, (596), 199 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 596 transitions. [2021-10-07 16:33:31,120 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 596 transitions. Word has length 17 [2021-10-07 16:33:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:31,120 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 596 transitions. [2021-10-07 16:33:31,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:33:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 596 transitions. [2021-10-07 16:33:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:33:31,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:31,121 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:31,143 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 16:33:31,337 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 16:33:31,337 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 16:33:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:31,338 INFO L82 PathProgramCache]: Analyzing trace with hash 999442586, now seen corresponding path program 36 times [2021-10-07 16:33:31,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:31,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107949215] [2021-10-07 16:33:31,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:33:31,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:31,341 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 16:33:31,341 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 16:33:32,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:33:32,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:32,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:33:32,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:32,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:34,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:34,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107949215] [2021-10-07 16:33:34,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107949215] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:34,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:34,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:33:34,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448195447] [2021-10-07 16:33:34,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:33:34,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:33:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:33:34,538 INFO L87 Difference]: Start difference. First operand 200 states and 596 transitions. Second operand has 20 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 16:33:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:40,834 INFO L93 Difference]: Finished difference Result 303 states and 783 transitions. [2021-10-07 16:33:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:33:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:33:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:40,837 INFO L225 Difference]: With dead ends: 303 [2021-10-07 16:33:40,837 INFO L226 Difference]: Without dead ends: 288 [2021-10-07 16:33:40,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 6214.9ms TimeCoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:33:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-07 16:33:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 204. [2021-10-07 16:33:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.9950738916256157) internal successors, (608), 203 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 608 transitions. [2021-10-07 16:33:40,845 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 608 transitions. Word has length 17 [2021-10-07 16:33:40,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:40,845 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 608 transitions. [2021-10-07 16:33:40,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:33:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 608 transitions. [2021-10-07 16:33:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:33:40,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:40,846 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:40,863 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 16:33:41,059 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 16:33:41,060 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 16:33:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 614971660, now seen corresponding path program 37 times [2021-10-07 16:33:41,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:41,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937037906] [2021-10-07 16:33:41,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:33:41,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:41,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:41,063 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 16:33:41,064 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 16:33:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:33:42,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:33:42,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:42,531 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 16:33:42,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:43,937 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 16:33:43,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:43,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937037906] [2021-10-07 16:33:43,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937037906] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:43,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:43,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:33:43,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903693646] [2021-10-07 16:33:43,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:33:43,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:33:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:33:43,952 INFO L87 Difference]: Start difference. First operand 204 states and 608 transitions. Second operand has 20 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 16:33:50,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:50,035 INFO L93 Difference]: Finished difference Result 487 states and 1192 transitions. [2021-10-07 16:33:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 16:33:50,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:33:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:50,040 INFO L225 Difference]: With dead ends: 487 [2021-10-07 16:33:50,040 INFO L226 Difference]: Without dead ends: 462 [2021-10-07 16:33:50,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 5549.9ms TimeCoverageRelationStatistics Valid=637, Invalid=1525, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:33:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-07 16:33:50,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 240. [2021-10-07 16:33:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 3.0502092050209204) internal successors, (729), 239 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 729 transitions. [2021-10-07 16:33:50,048 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 729 transitions. Word has length 17 [2021-10-07 16:33:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:50,048 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 729 transitions. [2021-10-07 16:33:50,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:33:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 729 transitions. [2021-10-07 16:33:50,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:33:50,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:50,049 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:50,065 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 16:33:50,255 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 16:33:50,256 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 16:33:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:50,257 INFO L82 PathProgramCache]: Analyzing trace with hash 697079500, now seen corresponding path program 38 times [2021-10-07 16:33:50,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:50,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840095581] [2021-10-07 16:33:50,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:33:50,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:50,259 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 16:33:50,261 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 16:33:51,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:33:51,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:33:51,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:33:51,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:51,762 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 16:33:51,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:53,132 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 16:33:53,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:53,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840095581] [2021-10-07 16:33:53,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840095581] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:33:53,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:33:53,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:33:53,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104176015] [2021-10-07 16:33:53,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:33:53,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:53,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:33:53,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:33:53,138 INFO L87 Difference]: Start difference. First operand 240 states and 729 transitions. Second operand has 20 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 16:33:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:59,557 INFO L93 Difference]: Finished difference Result 447 states and 1081 transitions. [2021-10-07 16:33:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:33:59,558 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:33:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:59,560 INFO L225 Difference]: With dead ends: 447 [2021-10-07 16:33:59,561 INFO L226 Difference]: Without dead ends: 432 [2021-10-07 16:33:59,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 6148.6ms TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:33:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-07 16:33:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 230. [2021-10-07 16:33:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.986899563318777) internal successors, (684), 229 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 684 transitions. [2021-10-07 16:33:59,570 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 684 transitions. Word has length 17 [2021-10-07 16:33:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:59,570 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 684 transitions. [2021-10-07 16:33:59,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:33:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 684 transitions. [2021-10-07 16:33:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:33:59,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:59,572 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:59,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:59,775 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 16:33:59,776 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 16:33:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:59,777 INFO L82 PathProgramCache]: Analyzing trace with hash 96319742, now seen corresponding path program 39 times [2021-10-07 16:33:59,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:59,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129611314] [2021-10-07 16:33:59,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:33:59,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:59,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:59,779 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 16:33:59,787 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 16:34:00,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:34:00,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:00,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:34:00,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:01,311 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 16:34:01,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:02,843 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 16:34:02,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:02,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129611314] [2021-10-07 16:34:02,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129611314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:02,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:02,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:34:02,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013054815] [2021-10-07 16:34:02,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:34:02,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:02,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:34:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:34:02,845 INFO L87 Difference]: Start difference. First operand 230 states and 684 transitions. Second operand has 20 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 16:34:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:07,906 INFO L93 Difference]: Finished difference Result 390 states and 966 transitions. [2021-10-07 16:34:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:34:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:34:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:07,909 INFO L225 Difference]: With dead ends: 390 [2021-10-07 16:34:07,909 INFO L226 Difference]: Without dead ends: 372 [2021-10-07 16:34:07,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 4920.6ms TimeCoverageRelationStatistics Valid=472, Invalid=1334, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 16:34:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-07 16:34:07,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 228. [2021-10-07 16:34:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.9647577092511015) internal successors, (673), 227 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 673 transitions. [2021-10-07 16:34:07,919 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 673 transitions. Word has length 17 [2021-10-07 16:34:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:07,919 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 673 transitions. [2021-10-07 16:34:07,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:34:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 673 transitions. [2021-10-07 16:34:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:34:07,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:07,920 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:07,939 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 16:34:08,134 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 16:34:08,135 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 16:34:08,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:08,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1312312884, now seen corresponding path program 40 times [2021-10-07 16:34:08,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:08,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508489473] [2021-10-07 16:34:08,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:34:08,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:08,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:08,138 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 16:34:08,139 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 16:34:09,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:34:09,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:09,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:34:09,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:09,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:11,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:11,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508489473] [2021-10-07 16:34:11,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508489473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:11,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:11,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:34:11,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162636028] [2021-10-07 16:34:11,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:34:11,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:34:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:34:11,522 INFO L87 Difference]: Start difference. First operand 228 states and 673 transitions. Second operand has 20 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 16:34:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:19,069 INFO L93 Difference]: Finished difference Result 340 states and 872 transitions. [2021-10-07 16:34:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:34:19,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:34:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:19,072 INFO L225 Difference]: With dead ends: 340 [2021-10-07 16:34:19,072 INFO L226 Difference]: Without dead ends: 330 [2021-10-07 16:34:19,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 7380.5ms TimeCoverageRelationStatistics Valid=344, Invalid=1636, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:34:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-07 16:34:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 228. [2021-10-07 16:34:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.9647577092511015) internal successors, (673), 227 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 673 transitions. [2021-10-07 16:34:19,081 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 673 transitions. Word has length 17 [2021-10-07 16:34:19,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:19,081 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 673 transitions. [2021-10-07 16:34:19,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:34:19,082 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 673 transitions. [2021-10-07 16:34:19,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:34:19,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:19,083 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:19,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-07 16:34:19,296 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 16:34:19,297 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 16:34:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:19,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1197979468, now seen corresponding path program 41 times [2021-10-07 16:34:19,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:19,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80612962] [2021-10-07 16:34:19,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:34:19,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:19,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:19,299 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 16:34:19,300 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 16:34:20,413 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:34:20,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:20,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:34:20,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:20,853 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 16:34:20,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:22,721 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 16:34:22,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:22,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80612962] [2021-10-07 16:34:22,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80612962] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:22,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:22,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:34:22,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569373375] [2021-10-07 16:34:22,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:34:22,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:22,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:34:22,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:34:22,724 INFO L87 Difference]: Start difference. First operand 228 states and 673 transitions. Second operand has 20 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 16:34:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:27,355 INFO L93 Difference]: Finished difference Result 340 states and 868 transitions. [2021-10-07 16:34:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 16:34:27,357 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:34:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:27,359 INFO L225 Difference]: With dead ends: 340 [2021-10-07 16:34:27,359 INFO L226 Difference]: Without dead ends: 318 [2021-10-07 16:34:27,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4729.5ms TimeCoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:34:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-07 16:34:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 214. [2021-10-07 16:34:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0187793427230045) internal successors, (643), 213 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 643 transitions. [2021-10-07 16:34:27,368 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 643 transitions. Word has length 17 [2021-10-07 16:34:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:27,368 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 643 transitions. [2021-10-07 16:34:27,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:34:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 643 transitions. [2021-10-07 16:34:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:34:27,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:27,369 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:27,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-07 16:34:27,581 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 16:34:27,582 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 16:34:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:27,583 INFO L82 PathProgramCache]: Analyzing trace with hash 641229420, now seen corresponding path program 42 times [2021-10-07 16:34:27,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:27,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985109149] [2021-10-07 16:34:27,584 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:34:27,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:27,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:27,586 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 16:34:27,587 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 16:34:28,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:34:28,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:28,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:34:28,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:29,237 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 16:34:29,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:30,642 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 16:34:30,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:30,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985109149] [2021-10-07 16:34:30,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985109149] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:30,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:30,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:34:30,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448083760] [2021-10-07 16:34:30,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:34:30,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:30,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:34:30,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:34:30,646 INFO L87 Difference]: Start difference. First operand 214 states and 643 transitions. Second operand has 20 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 16:34:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:37,215 INFO L93 Difference]: Finished difference Result 534 states and 1317 transitions. [2021-10-07 16:34:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:34:37,216 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:34:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:37,221 INFO L225 Difference]: With dead ends: 534 [2021-10-07 16:34:37,221 INFO L226 Difference]: Without dead ends: 504 [2021-10-07 16:34:37,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 6122.9ms TimeCoverageRelationStatistics Valid=704, Invalid=1846, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 16:34:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-07 16:34:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 258. [2021-10-07 16:34:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.066147859922179) internal successors, (788), 257 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 788 transitions. [2021-10-07 16:34:37,233 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 788 transitions. Word has length 17 [2021-10-07 16:34:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:37,233 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 788 transitions. [2021-10-07 16:34:37,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:34:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 788 transitions. [2021-10-07 16:34:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:34:37,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:37,235 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:37,258 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 16:34:37,450 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 16:34:37,451 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 16:34:37,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:37,451 INFO L82 PathProgramCache]: Analyzing trace with hash 723337260, now seen corresponding path program 43 times [2021-10-07 16:34:37,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:37,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136100490] [2021-10-07 16:34:37,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:34:37,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:37,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:37,454 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 16:34:37,455 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 16:34:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:34:38,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:34:38,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:39,110 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 16:34:39,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:40,466 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 16:34:40,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:40,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136100490] [2021-10-07 16:34:40,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136100490] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:40,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:40,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:34:40,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065135689] [2021-10-07 16:34:40,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:34:40,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:34:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:34:40,468 INFO L87 Difference]: Start difference. First operand 258 states and 788 transitions. Second operand has 20 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 16:34:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:48,285 INFO L93 Difference]: Finished difference Result 490 states and 1202 transitions. [2021-10-07 16:34:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 16:34:48,286 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:34:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:48,288 INFO L225 Difference]: With dead ends: 490 [2021-10-07 16:34:48,288 INFO L226 Difference]: Without dead ends: 470 [2021-10-07 16:34:48,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 7494.4ms TimeCoverageRelationStatistics Valid=771, Invalid=2091, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 16:34:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-07 16:34:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 248. [2021-10-07 16:34:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0080971659919027) internal successors, (743), 247 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 743 transitions. [2021-10-07 16:34:48,295 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 743 transitions. Word has length 17 [2021-10-07 16:34:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:48,295 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 743 transitions. [2021-10-07 16:34:48,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:34:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 743 transitions. [2021-10-07 16:34:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:34:48,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:48,296 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:48,310 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 16:34:48,497 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 16:34:48,497 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 16:34:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash 122577502, now seen corresponding path program 44 times [2021-10-07 16:34:48,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:48,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12326725] [2021-10-07 16:34:48,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:34:48,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:48,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:48,501 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 16:34:48,504 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 16:34:49,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:34:49,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:49,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:34:49,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:50,153 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 16:34:50,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:51,686 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 16:34:51,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:51,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12326725] [2021-10-07 16:34:51,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12326725] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:51,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:51,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:34:51,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66798097] [2021-10-07 16:34:51,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:34:51,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:34:51,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:34:51,689 INFO L87 Difference]: Start difference. First operand 248 states and 743 transitions. Second operand has 20 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 16:34:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:56,592 INFO L93 Difference]: Finished difference Result 426 states and 1065 transitions. [2021-10-07 16:34:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:34:56,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:34:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:56,596 INFO L225 Difference]: With dead ends: 426 [2021-10-07 16:34:56,596 INFO L226 Difference]: Without dead ends: 408 [2021-10-07 16:34:56,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4650.8ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 16:34:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-07 16:34:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 246. [2021-10-07 16:34:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 2.987755102040816) internal successors, (732), 245 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 732 transitions. [2021-10-07 16:34:56,604 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 732 transitions. Word has length 17 [2021-10-07 16:34:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:56,605 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 732 transitions. [2021-10-07 16:34:56,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:34:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 732 transitions. [2021-10-07 16:34:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:34:56,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:56,607 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:56,626 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 16:34:56,821 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 16:34:56,822 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 16:34:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:56,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1286055124, now seen corresponding path program 45 times [2021-10-07 16:34:56,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:56,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761592472] [2021-10-07 16:34:56,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:34:56,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:56,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:56,825 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 16:34:56,826 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 16:34:58,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:34:58,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:58,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:34:58,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:34:58,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:00,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:00,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761592472] [2021-10-07 16:35:00,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761592472] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:00,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:00,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:35:00,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571636998] [2021-10-07 16:35:00,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:35:00,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:35:00,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:35:00,160 INFO L87 Difference]: Start difference. First operand 246 states and 732 transitions. Second operand has 20 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 16:35:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:08,295 INFO L93 Difference]: Finished difference Result 362 states and 955 transitions. [2021-10-07 16:35:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 16:35:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:35:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:08,298 INFO L225 Difference]: With dead ends: 362 [2021-10-07 16:35:08,298 INFO L226 Difference]: Without dead ends: 352 [2021-10-07 16:35:08,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 7754.5ms TimeCoverageRelationStatistics Valid=410, Invalid=1660, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:35:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-07 16:35:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 244. [2021-10-07 16:35:08,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.0) internal successors, (729), 243 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 729 transitions. [2021-10-07 16:35:08,307 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 729 transitions. Word has length 17 [2021-10-07 16:35:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:08,307 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 729 transitions. [2021-10-07 16:35:08,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:35:08,308 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 729 transitions. [2021-10-07 16:35:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:35:08,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:08,309 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:08,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-07 16:35:08,522 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 16:35:08,523 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 16:35:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1224237228, now seen corresponding path program 46 times [2021-10-07 16:35:08,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:08,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252719688] [2021-10-07 16:35:08,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:35:08,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:08,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:08,526 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 16:35:08,527 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 16:35:09,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:35:09,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:09,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:35:09,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:10,257 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 16:35:10,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:11,869 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 16:35:11,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:11,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252719688] [2021-10-07 16:35:11,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252719688] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:11,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:11,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:35:11,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100144280] [2021-10-07 16:35:11,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:35:11,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:11,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:35:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:35:11,871 INFO L87 Difference]: Start difference. First operand 244 states and 729 transitions. Second operand has 20 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 16:35:15,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:15,942 INFO L93 Difference]: Finished difference Result 378 states and 977 transitions. [2021-10-07 16:35:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:35:15,944 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:35:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:15,946 INFO L225 Difference]: With dead ends: 378 [2021-10-07 16:35:15,946 INFO L226 Difference]: Without dead ends: 356 [2021-10-07 16:35:15,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 4047.5ms TimeCoverageRelationStatistics Valid=396, Invalid=1086, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 16:35:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-07 16:35:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 242. [2021-10-07 16:35:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.987551867219917) internal successors, (720), 241 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 720 transitions. [2021-10-07 16:35:15,959 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 720 transitions. Word has length 17 [2021-10-07 16:35:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:15,959 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 720 transitions. [2021-10-07 16:35:15,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:35:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 720 transitions. [2021-10-07 16:35:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:35:15,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:15,960 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:15,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-07 16:35:16,161 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 16:35:16,162 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 16:35:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1329057946, now seen corresponding path program 47 times [2021-10-07 16:35:16,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:16,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897125878] [2021-10-07 16:35:16,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:35:16,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:16,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:16,165 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 16:35:16,166 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 16:35:17,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:35:17,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:17,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:35:17,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:17,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:19,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:19,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897125878] [2021-10-07 16:35:19,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897125878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:19,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:19,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:35:19,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733038870] [2021-10-07 16:35:19,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:35:19,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:35:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:35:19,256 INFO L87 Difference]: Start difference. First operand 242 states and 720 transitions. Second operand has 20 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 16:35:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:25,754 INFO L93 Difference]: Finished difference Result 533 states and 1305 transitions. [2021-10-07 16:35:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 16:35:25,755 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:35:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:25,759 INFO L225 Difference]: With dead ends: 533 [2021-10-07 16:35:25,760 INFO L226 Difference]: Without dead ends: 518 [2021-10-07 16:35:25,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 6282.9ms TimeCoverageRelationStatistics Valid=524, Invalid=1926, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 16:35:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-07 16:35:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 260. [2021-10-07 16:35:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.0386100386100385) internal successors, (787), 259 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 787 transitions. [2021-10-07 16:35:25,768 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 787 transitions. Word has length 17 [2021-10-07 16:35:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:25,768 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 787 transitions. [2021-10-07 16:35:25,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:35:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 787 transitions. [2021-10-07 16:35:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:35:25,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:25,769 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:25,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-10-07 16:35:25,971 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 16:35:25,972 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 16:35:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1411165786, now seen corresponding path program 48 times [2021-10-07 16:35:25,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:25,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039693361] [2021-10-07 16:35:25,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:35:25,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:25,975 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 16:35:25,976 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 16:35:27,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:35:27,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:27,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:35:27,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:27,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:29,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:29,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039693361] [2021-10-07 16:35:29,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039693361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:29,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:29,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:35:29,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093527981] [2021-10-07 16:35:29,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:35:29,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:35:29,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:35:29,410 INFO L87 Difference]: Start difference. First operand 260 states and 787 transitions. Second operand has 20 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 16:35:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:38,673 INFO L93 Difference]: Finished difference Result 473 states and 1208 transitions. [2021-10-07 16:35:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 16:35:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:35:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:38,676 INFO L225 Difference]: With dead ends: 473 [2021-10-07 16:35:38,676 INFO L226 Difference]: Without dead ends: 458 [2021-10-07 16:35:38,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 9072.7ms TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 16:35:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-07 16:35:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 256. [2021-10-07 16:35:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.0313725490196077) internal successors, (773), 255 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 773 transitions. [2021-10-07 16:35:38,683 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 773 transitions. Word has length 17 [2021-10-07 16:35:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:38,683 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 773 transitions. [2021-10-07 16:35:38,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:35:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 773 transitions. [2021-10-07 16:35:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:35:38,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:38,684 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:38,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-07 16:35:38,884 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 16:35:38,885 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 16:35:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:38,885 INFO L82 PathProgramCache]: Analyzing trace with hash 810406028, now seen corresponding path program 49 times [2021-10-07 16:35:38,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:38,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446577971] [2021-10-07 16:35:38,886 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:35:38,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:38,887 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 16:35:38,889 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 16:35:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:35:40,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:35:40,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:40,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:42,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:42,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446577971] [2021-10-07 16:35:42,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446577971] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:42,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:42,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:35:42,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876381055] [2021-10-07 16:35:42,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:35:42,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:42,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:35:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:35:42,721 INFO L87 Difference]: Start difference. First operand 256 states and 773 transitions. Second operand has 20 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 16:35:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:35:50,532 INFO L93 Difference]: Finished difference Result 388 states and 1032 transitions. [2021-10-07 16:35:50,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:35:50,534 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:35:50,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:35:50,537 INFO L225 Difference]: With dead ends: 388 [2021-10-07 16:35:50,537 INFO L226 Difference]: Without dead ends: 378 [2021-10-07 16:35:50,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 7894.5ms TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 16:35:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-07 16:35:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 254. [2021-10-07 16:35:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 3.027667984189723) internal successors, (766), 253 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:35:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 766 transitions. [2021-10-07 16:35:50,545 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 766 transitions. Word has length 17 [2021-10-07 16:35:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:35:50,545 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 766 transitions. [2021-10-07 16:35:50,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:35:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 766 transitions. [2021-10-07 16:35:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:35:50,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:35:50,546 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:35:50,563 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 16:35:50,756 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 16:35:50,756 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 16:35:50,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:35:50,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1665904674, now seen corresponding path program 50 times [2021-10-07 16:35:50,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:35:50,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439703385] [2021-10-07 16:35:50,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:35:50,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:35:50,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:35:50,759 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 16:35:50,761 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 16:35:52,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:35:52,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:35:52,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:35:52,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:35:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:52,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:35:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:35:54,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:35:54,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439703385] [2021-10-07 16:35:54,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439703385] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:35:54,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:35:54,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:35:54,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338554262] [2021-10-07 16:35:54,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:35:54,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:35:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:35:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:35:54,169 INFO L87 Difference]: Start difference. First operand 254 states and 766 transitions. Second operand has 20 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 16:36:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:02,671 INFO L93 Difference]: Finished difference Result 434 states and 1109 transitions. [2021-10-07 16:36:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 16:36:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:36:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:02,675 INFO L225 Difference]: With dead ends: 434 [2021-10-07 16:36:02,675 INFO L226 Difference]: Without dead ends: 414 [2021-10-07 16:36:02,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 8470.1ms TimeCoverageRelationStatistics Valid=465, Invalid=1887, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:36:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-10-07 16:36:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 266. [2021-10-07 16:36:02,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.9584905660377356) internal successors, (784), 265 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 784 transitions. [2021-10-07 16:36:02,682 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 784 transitions. Word has length 17 [2021-10-07 16:36:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:02,683 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 784 transitions. [2021-10-07 16:36:02,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:36:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 784 transitions. [2021-10-07 16:36:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:36:02,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:02,684 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:02,698 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 16:36:02,884 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 16:36:02,885 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 16:36:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1768016794, now seen corresponding path program 51 times [2021-10-07 16:36:02,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:02,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433042134] [2021-10-07 16:36:02,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:36:02,887 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:02,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:02,891 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 16:36:02,896 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 16:36:04,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:36:04,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:04,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:36:04,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:04,741 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 16:36:04,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:06,201 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 16:36:06,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:06,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433042134] [2021-10-07 16:36:06,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433042134] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:06,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:06,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:36:06,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927180797] [2021-10-07 16:36:06,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:36:06,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:36:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:36:06,203 INFO L87 Difference]: Start difference. First operand 266 states and 784 transitions. Second operand has 20 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 16:36:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:10,116 INFO L93 Difference]: Finished difference Result 406 states and 1068 transitions. [2021-10-07 16:36:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:36:10,118 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-07 16:36:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:10,120 INFO L225 Difference]: With dead ends: 406 [2021-10-07 16:36:10,120 INFO L226 Difference]: Without dead ends: 378 [2021-10-07 16:36:10,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 3843.2ms TimeCoverageRelationStatistics Valid=392, Invalid=1248, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:36:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-07 16:36:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 248. [2021-10-07 16:36:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0364372469635628) internal successors, (750), 247 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 750 transitions. [2021-10-07 16:36:10,129 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 750 transitions. Word has length 17 [2021-10-07 16:36:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:10,130 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 750 transitions. [2021-10-07 16:36:10,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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 16:36:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 750 transitions. [2021-10-07 16:36:10,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:36:10,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:10,131 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:10,151 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 16:36:10,346 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 16:36:10,347 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 16:36:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash -316298114, now seen corresponding path program 52 times [2021-10-07 16:36:10,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:10,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160814898] [2021-10-07 16:36:10,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:36:10,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:10,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:10,350 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 16:36:10,351 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 16:36:11,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:36:11,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:11,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:36:11,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:12,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:14,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:14,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160814898] [2021-10-07 16:36:14,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160814898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:14,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:14,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:36:14,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174066572] [2021-10-07 16:36:14,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:36:14,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:36:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:36:14,487 INFO L87 Difference]: Start difference. First operand 248 states and 750 transitions. Second operand has 22 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 16:36:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:27,630 INFO L93 Difference]: Finished difference Result 564 states and 1447 transitions. [2021-10-07 16:36:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:36:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:36:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:27,634 INFO L225 Difference]: With dead ends: 564 [2021-10-07 16:36:27,634 INFO L226 Difference]: Without dead ends: 544 [2021-10-07 16:36:27,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 12447.3ms TimeCoverageRelationStatistics Valid=691, Invalid=2065, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 16:36:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-07 16:36:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 316. [2021-10-07 16:36:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.231746031746032) internal successors, (1018), 315 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1018 transitions. [2021-10-07 16:36:27,642 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1018 transitions. Word has length 18 [2021-10-07 16:36:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:27,643 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1018 transitions. [2021-10-07 16:36:27,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:36:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1018 transitions. [2021-10-07 16:36:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:36:27,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:27,644 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:27,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-07 16:36:27,845 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 16:36:27,845 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 16:36:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash -234190274, now seen corresponding path program 53 times [2021-10-07 16:36:27,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:27,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94925381] [2021-10-07 16:36:27,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:36:27,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:27,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:27,848 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 16:36:27,849 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 16:36:29,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:36:29,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:29,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:36:29,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:29,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:31,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:31,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94925381] [2021-10-07 16:36:31,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94925381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:31,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:31,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:36:31,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032597181] [2021-10-07 16:36:31,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:36:31,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:31,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:36:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:36:31,966 INFO L87 Difference]: Start difference. First operand 316 states and 1018 transitions. Second operand has 22 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 16:36:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:42,504 INFO L93 Difference]: Finished difference Result 525 states and 1381 transitions. [2021-10-07 16:36:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:36:42,505 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:36:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:42,510 INFO L225 Difference]: With dead ends: 525 [2021-10-07 16:36:42,510 INFO L226 Difference]: Without dead ends: 510 [2021-10-07 16:36:42,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 10011.9ms TimeCoverageRelationStatistics Valid=601, Invalid=2051, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 16:36:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-07 16:36:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 318. [2021-10-07 16:36:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.2397476340694005) internal successors, (1027), 317 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1027 transitions. [2021-10-07 16:36:42,528 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1027 transitions. Word has length 18 [2021-10-07 16:36:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:42,528 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1027 transitions. [2021-10-07 16:36:42,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:36:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1027 transitions. [2021-10-07 16:36:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:36:42,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:42,530 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:42,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-07 16:36:42,730 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 16:36:42,731 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 16:36:42,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1373628838, now seen corresponding path program 54 times [2021-10-07 16:36:42,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:42,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082215134] [2021-10-07 16:36:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:36:42,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:42,735 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 16:36:42,736 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 16:36:44,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:36:44,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:36:44,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:36:44,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:44,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:36:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:47,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:36:47,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082215134] [2021-10-07 16:36:47,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082215134] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:36:47,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:36:47,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:36:47,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762737806] [2021-10-07 16:36:47,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:36:47,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:36:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:36:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:36:47,009 INFO L87 Difference]: Start difference. First operand 318 states and 1027 transitions. Second operand has 22 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 16:36:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:36:57,653 INFO L93 Difference]: Finished difference Result 550 states and 1469 transitions. [2021-10-07 16:36:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:36:57,654 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:36:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:36:57,658 INFO L225 Difference]: With dead ends: 550 [2021-10-07 16:36:57,658 INFO L226 Difference]: Without dead ends: 530 [2021-10-07 16:36:57,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 10439.4ms TimeCoverageRelationStatistics Valid=466, Invalid=1604, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:36:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-07 16:36:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 338. [2021-10-07 16:36:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.28486646884273) internal successors, (1107), 337 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:36:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1107 transitions. [2021-10-07 16:36:57,671 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1107 transitions. Word has length 18 [2021-10-07 16:36:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:36:57,671 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1107 transitions. [2021-10-07 16:36:57,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:36:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1107 transitions. [2021-10-07 16:36:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:36:57,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:36:57,673 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:36:57,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-07 16:36:57,878 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 16:36:57,879 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 16:36:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:36:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1291520998, now seen corresponding path program 55 times [2021-10-07 16:36:57,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:36:57,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340214801] [2021-10-07 16:36:57,880 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:36:57,880 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:36:57,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:36:57,882 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 16:36:57,886 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 16:36:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:36:59,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:36:59,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:36:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:36:59,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:37:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:02,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:37:02,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340214801] [2021-10-07 16:37:02,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340214801] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:37:02,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:37:02,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:37:02,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798947962] [2021-10-07 16:37:02,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:37:02,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:37:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:37:02,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:37:02,231 INFO L87 Difference]: Start difference. First operand 338 states and 1107 transitions. Second operand has 22 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 16:37:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:37:13,956 INFO L93 Difference]: Finished difference Result 530 states and 1431 transitions. [2021-10-07 16:37:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:37:13,957 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:37:13,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:37:13,960 INFO L225 Difference]: With dead ends: 530 [2021-10-07 16:37:13,961 INFO L226 Difference]: Without dead ends: 510 [2021-10-07 16:37:13,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 11504.2ms TimeCoverageRelationStatistics Valid=487, Invalid=1865, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:37:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-07 16:37:13,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 332. [2021-10-07 16:37:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 3.2628398791540785) internal successors, (1080), 331 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 1080 transitions. [2021-10-07 16:37:13,979 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 1080 transitions. Word has length 18 [2021-10-07 16:37:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:37:13,979 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 1080 transitions. [2021-10-07 16:37:13,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:37:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 1080 transitions. [2021-10-07 16:37:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:37:13,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:37:13,980 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:37:13,996 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 16:37:14,185 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 16:37:14,186 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 16:37:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:37:14,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1501757694, now seen corresponding path program 56 times [2021-10-07 16:37:14,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:37:14,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348643998] [2021-10-07 16:37:14,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:37:14,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:37:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:37:14,190 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 16:37:14,196 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 16:37:15,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:37:15,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:37:15,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:37:15,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:37:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:16,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:37:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:18,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:37:18,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348643998] [2021-10-07 16:37:18,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348643998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:37:18,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:37:18,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:37:18,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995871302] [2021-10-07 16:37:18,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:37:18,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:37:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:37:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:37:18,599 INFO L87 Difference]: Start difference. First operand 332 states and 1080 transitions. Second operand has 22 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 16:37:28,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:37:28,667 INFO L93 Difference]: Finished difference Result 512 states and 1420 transitions. [2021-10-07 16:37:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 16:37:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:37:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:37:28,670 INFO L225 Difference]: With dead ends: 512 [2021-10-07 16:37:28,671 INFO L226 Difference]: Without dead ends: 502 [2021-10-07 16:37:28,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 10155.8ms TimeCoverageRelationStatistics Valid=446, Invalid=1534, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:37:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-07 16:37:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 338. [2021-10-07 16:37:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.2729970326409497) internal successors, (1103), 337 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1103 transitions. [2021-10-07 16:37:28,682 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1103 transitions. Word has length 18 [2021-10-07 16:37:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:37:28,683 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1103 transitions. [2021-10-07 16:37:28,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:37:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1103 transitions. [2021-10-07 16:37:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:37:28,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:37:28,685 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:37:28,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-07 16:37:28,896 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 16:37:28,897 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 16:37:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:37:28,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1583865534, now seen corresponding path program 57 times [2021-10-07 16:37:28,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:37:28,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495831424] [2021-10-07 16:37:28,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:37:28,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:37:28,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:37:28,900 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 16:37:28,901 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 16:37:30,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:37:30,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:37:30,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:37:30,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:37:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:31,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:37:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:33,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:37:33,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495831424] [2021-10-07 16:37:33,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495831424] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:37:33,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:37:33,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:37:33,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630289761] [2021-10-07 16:37:33,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:37:33,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:37:33,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:37:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:37:33,264 INFO L87 Difference]: Start difference. First operand 338 states and 1103 transitions. Second operand has 22 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 16:37:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:37:42,016 INFO L93 Difference]: Finished difference Result 514 states and 1425 transitions. [2021-10-07 16:37:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:37:42,017 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:37:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:37:42,019 INFO L225 Difference]: With dead ends: 514 [2021-10-07 16:37:42,020 INFO L226 Difference]: Without dead ends: 504 [2021-10-07 16:37:42,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 8704.0ms TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:37:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-07 16:37:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 336. [2021-10-07 16:37:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.265671641791045) internal successors, (1094), 335 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1094 transitions. [2021-10-07 16:37:42,033 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1094 transitions. Word has length 18 [2021-10-07 16:37:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:37:42,034 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1094 transitions. [2021-10-07 16:37:42,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:37:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1094 transitions. [2021-10-07 16:37:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:37:42,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:37:42,035 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:37:42,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-07 16:37:42,244 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 16:37:42,245 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 16:37:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:37:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1317417434, now seen corresponding path program 58 times [2021-10-07 16:37:42,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:37:42,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565990899] [2021-10-07 16:37:42,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:37:42,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:37:42,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:37:42,248 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 16:37:42,249 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 16:37:43,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:37:43,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:37:43,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:37:43,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:37:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:44,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:37:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:46,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:37:46,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565990899] [2021-10-07 16:37:46,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565990899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:37:46,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:37:46,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:37:46,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980110174] [2021-10-07 16:37:46,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:37:46,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:37:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:37:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:37:46,756 INFO L87 Difference]: Start difference. First operand 336 states and 1094 transitions. Second operand has 22 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 16:37:56,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:37:56,341 INFO L93 Difference]: Finished difference Result 502 states and 1412 transitions. [2021-10-07 16:37:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:37:56,343 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:37:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:37:56,345 INFO L225 Difference]: With dead ends: 502 [2021-10-07 16:37:56,345 INFO L226 Difference]: Without dead ends: 492 [2021-10-07 16:37:56,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 9837.7ms TimeCoverageRelationStatistics Valid=354, Invalid=1368, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:37:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-10-07 16:37:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 340. [2021-10-07 16:37:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.2684365781710913) internal successors, (1108), 339 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1108 transitions. [2021-10-07 16:37:56,354 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1108 transitions. Word has length 18 [2021-10-07 16:37:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:37:56,354 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1108 transitions. [2021-10-07 16:37:56,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:37:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1108 transitions. [2021-10-07 16:37:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:37:56,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:37:56,355 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:37:56,371 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 16:37:56,563 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 16:37:56,563 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 16:37:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:37:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1399525274, now seen corresponding path program 59 times [2021-10-07 16:37:56,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:37:56,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726921927] [2021-10-07 16:37:56,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:37:56,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:37:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:37:56,566 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 16:37:56,568 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 16:37:58,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:37:58,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:37:58,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:37:58,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:37:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:37:58,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:38:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:01,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:38:01,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726921927] [2021-10-07 16:38:01,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726921927] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:38:01,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:38:01,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:38:01,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463595760] [2021-10-07 16:38:01,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:38:01,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:38:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:38:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:38:01,146 INFO L87 Difference]: Start difference. First operand 340 states and 1108 transitions. Second operand has 22 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 16:38:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:38:09,242 INFO L93 Difference]: Finished difference Result 480 states and 1371 transitions. [2021-10-07 16:38:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 16:38:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:38:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:38:09,243 INFO L225 Difference]: With dead ends: 480 [2021-10-07 16:38:09,243 INFO L226 Difference]: Without dead ends: 470 [2021-10-07 16:38:09,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 8369.1ms TimeCoverageRelationStatistics Valid=358, Invalid=1622, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:38:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-07 16:38:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 338. [2021-10-07 16:38:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.2611275964391693) internal successors, (1099), 337 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1099 transitions. [2021-10-07 16:38:09,251 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1099 transitions. Word has length 18 [2021-10-07 16:38:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:38:09,251 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1099 transitions. [2021-10-07 16:38:09,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:38:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1099 transitions. [2021-10-07 16:38:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:38:09,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:38:09,253 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:38:09,269 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 16:38:09,453 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 16:38:09,454 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 16:38:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:38:09,454 INFO L82 PathProgramCache]: Analyzing trace with hash 798765516, now seen corresponding path program 60 times [2021-10-07 16:38:09,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:38:09,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072781429] [2021-10-07 16:38:09,455 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:38:09,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:38:09,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:38:09,457 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 16:38:09,459 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 16:38:11,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:38:11,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:38:11,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:38:11,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:11,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:38:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:14,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:38:14,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072781429] [2021-10-07 16:38:14,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072781429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:38:14,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:38:14,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:38:14,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477146505] [2021-10-07 16:38:14,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:38:14,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:38:14,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:38:14,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:38:14,332 INFO L87 Difference]: Start difference. First operand 338 states and 1099 transitions. Second operand has 22 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 16:38:22,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:38:22,212 INFO L93 Difference]: Finished difference Result 426 states and 1259 transitions. [2021-10-07 16:38:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 16:38:22,214 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:38:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:38:22,215 INFO L225 Difference]: With dead ends: 426 [2021-10-07 16:38:22,215 INFO L226 Difference]: Without dead ends: 416 [2021-10-07 16:38:22,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 8454.0ms TimeCoverageRelationStatistics Valid=278, Invalid=1054, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 16:38:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-07 16:38:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 336. [2021-10-07 16:38:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.2597014925373133) internal successors, (1092), 335 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1092 transitions. [2021-10-07 16:38:22,223 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1092 transitions. Word has length 18 [2021-10-07 16:38:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:38:22,224 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1092 transitions. [2021-10-07 16:38:22,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:38:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1092 transitions. [2021-10-07 16:38:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:38:22,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:38:22,225 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:38:22,240 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 16:38:22,425 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 16:38:22,426 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 16:38:22,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:38:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1928088286, now seen corresponding path program 61 times [2021-10-07 16:38:22,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:38:22,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635104220] [2021-10-07 16:38:22,427 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:38:22,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:38:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:38:22,429 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 16:38:22,430 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 16:38:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:38:24,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:38:24,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:24,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:38:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:26,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:38:26,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635104220] [2021-10-07 16:38:26,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635104220] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:38:26,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:38:26,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:38:26,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730303574] [2021-10-07 16:38:26,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:38:26,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:38:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:38:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:38:26,866 INFO L87 Difference]: Start difference. First operand 336 states and 1092 transitions. Second operand has 22 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 16:38:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:38:40,271 INFO L93 Difference]: Finished difference Result 610 states and 1650 transitions. [2021-10-07 16:38:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:38:40,272 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:38:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:38:40,274 INFO L225 Difference]: With dead ends: 610 [2021-10-07 16:38:40,274 INFO L226 Difference]: Without dead ends: 590 [2021-10-07 16:38:40,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 12557.5ms TimeCoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 16:38:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-07 16:38:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 358. [2021-10-07 16:38:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.330532212885154) internal successors, (1189), 357 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1189 transitions. [2021-10-07 16:38:40,283 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1189 transitions. Word has length 18 [2021-10-07 16:38:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:38:40,284 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1189 transitions. [2021-10-07 16:38:40,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:38:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1189 transitions. [2021-10-07 16:38:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:38:40,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:38:40,285 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:38:40,302 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 16:38:40,485 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 16:38:40,486 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 16:38:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:38:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1845980446, now seen corresponding path program 62 times [2021-10-07 16:38:40,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:38:40,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607052447] [2021-10-07 16:38:40,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:38:40,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:38:40,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:38:40,489 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 16:38:40,490 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 16:38:42,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:38:42,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:38:42,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:38:42,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:42,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:38:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:44,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:38:44,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607052447] [2021-10-07 16:38:44,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607052447] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:38:44,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:38:44,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:38:44,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954991603] [2021-10-07 16:38:44,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:38:44,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:38:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:38:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:38:44,992 INFO L87 Difference]: Start difference. First operand 358 states and 1189 transitions. Second operand has 22 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 16:38:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:38:57,050 INFO L93 Difference]: Finished difference Result 573 states and 1567 transitions. [2021-10-07 16:38:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-07 16:38:57,052 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:38:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:38:57,054 INFO L225 Difference]: With dead ends: 573 [2021-10-07 16:38:57,054 INFO L226 Difference]: Without dead ends: 558 [2021-10-07 16:38:57,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 11374.8ms TimeCoverageRelationStatistics Valid=598, Invalid=2158, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 16:38:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-07 16:38:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 318. [2021-10-07 16:38:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.2523659305993693) internal successors, (1031), 317 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1031 transitions. [2021-10-07 16:38:57,062 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1031 transitions. Word has length 18 [2021-10-07 16:38:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:38:57,062 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1031 transitions. [2021-10-07 16:38:57,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:38:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1031 transitions. [2021-10-07 16:38:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:38:57,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:38:57,063 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:38:57,078 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 16:38:57,264 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 16:38:57,264 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 16:38:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:38:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1309548286, now seen corresponding path program 63 times [2021-10-07 16:38:57,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:38:57,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951887289] [2021-10-07 16:38:57,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:38:57,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:38:57,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:38:57,268 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 16:38:57,271 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 16:38:59,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:38:59,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:38:59,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:38:59,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:59,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:39:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:01,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:39:01,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951887289] [2021-10-07 16:39:01,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951887289] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:39:01,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:39:01,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:39:01,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802728261] [2021-10-07 16:39:01,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:39:01,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:39:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:39:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:39:01,723 INFO L87 Difference]: Start difference. First operand 318 states and 1031 transitions. Second operand has 22 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 16:39:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:39:14,139 INFO L93 Difference]: Finished difference Result 570 states and 1512 transitions. [2021-10-07 16:39:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 16:39:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:39:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:39:14,143 INFO L225 Difference]: With dead ends: 570 [2021-10-07 16:39:14,143 INFO L226 Difference]: Without dead ends: 550 [2021-10-07 16:39:14,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 11591.0ms TimeCoverageRelationStatistics Valid=611, Invalid=2251, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 16:39:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-07 16:39:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 326. [2021-10-07 16:39:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.2984615384615386) internal successors, (1072), 325 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1072 transitions. [2021-10-07 16:39:14,151 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1072 transitions. Word has length 18 [2021-10-07 16:39:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:39:14,151 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1072 transitions. [2021-10-07 16:39:14,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:39:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1072 transitions. [2021-10-07 16:39:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:39:14,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:39:14,152 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:39:14,167 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 16:39:14,352 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 16:39:14,353 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 16:39:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:39:14,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1391656126, now seen corresponding path program 64 times [2021-10-07 16:39:14,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:39:14,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804307238] [2021-10-07 16:39:14,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:39:14,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:39:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:39:14,356 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 16:39:14,359 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 16:39:16,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:39:16,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:39:16,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:39:16,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:39:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:16,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:39:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:18,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:39:18,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804307238] [2021-10-07 16:39:18,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804307238] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:39:18,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:39:18,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:39:18,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727292244] [2021-10-07 16:39:18,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:39:18,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:39:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:39:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:39:18,888 INFO L87 Difference]: Start difference. First operand 326 states and 1072 transitions. Second operand has 22 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 16:39:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:39:32,597 INFO L93 Difference]: Finished difference Result 538 states and 1456 transitions. [2021-10-07 16:39:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:39:32,598 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:39:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:39:32,600 INFO L225 Difference]: With dead ends: 538 [2021-10-07 16:39:32,600 INFO L226 Difference]: Without dead ends: 518 [2021-10-07 16:39:32,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 13107.8ms TimeCoverageRelationStatistics Valid=511, Invalid=2039, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 16:39:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-07 16:39:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 304. [2021-10-07 16:39:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.237623762376238) internal successors, (981), 303 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 981 transitions. [2021-10-07 16:39:32,608 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 981 transitions. Word has length 18 [2021-10-07 16:39:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:39:32,608 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 981 transitions. [2021-10-07 16:39:32,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:39:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 981 transitions. [2021-10-07 16:39:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:39:32,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:39:32,609 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:39:32,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-07 16:39:32,811 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 16:39:32,812 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 16:39:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:39:32,812 INFO L82 PathProgramCache]: Analyzing trace with hash -110032478, now seen corresponding path program 65 times [2021-10-07 16:39:32,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:39:32,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196900774] [2021-10-07 16:39:32,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:39:32,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:39:32,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:39:32,814 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 16:39:32,816 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 16:39:34,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:39:34,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:39:34,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:39:34,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:39:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:35,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:39:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:37,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:39:37,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196900774] [2021-10-07 16:39:37,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196900774] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:39:37,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:39:37,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:39:37,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516852930] [2021-10-07 16:39:37,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:39:37,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:39:37,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:39:37,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:39:37,563 INFO L87 Difference]: Start difference. First operand 304 states and 981 transitions. Second operand has 22 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 16:39:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:39:48,572 INFO L93 Difference]: Finished difference Result 498 states and 1377 transitions. [2021-10-07 16:39:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 16:39:48,573 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:39:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:39:48,575 INFO L225 Difference]: With dead ends: 498 [2021-10-07 16:39:48,575 INFO L226 Difference]: Without dead ends: 488 [2021-10-07 16:39:48,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 10478.6ms TimeCoverageRelationStatistics Valid=460, Invalid=1610, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:39:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-07 16:39:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 314. [2021-10-07 16:39:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.2651757188498403) internal successors, (1022), 313 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:39:48,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1022 transitions. [2021-10-07 16:39:48,583 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1022 transitions. Word has length 18 [2021-10-07 16:39:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:39:48,583 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1022 transitions. [2021-10-07 16:39:48,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:39:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1022 transitions. [2021-10-07 16:39:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:39:48,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:39:48,584 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:39:48,601 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 16:39:48,784 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 16:39:48,785 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 16:39:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:39:48,786 INFO L82 PathProgramCache]: Analyzing trace with hash -27924638, now seen corresponding path program 66 times [2021-10-07 16:39:48,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:39:48,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734498635] [2021-10-07 16:39:48,786 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:39:48,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:39:48,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:39:48,788 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 16:39:48,789 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 16:39:50,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:39:50,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:39:50,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:39:50,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:39:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:51,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:39:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:39:53,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:39:53,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734498635] [2021-10-07 16:39:53,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734498635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:39:53,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:39:53,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:39:53,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664408302] [2021-10-07 16:39:53,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:39:53,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:39:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:39:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:39:53,382 INFO L87 Difference]: Start difference. First operand 314 states and 1022 transitions. Second operand has 22 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 16:40:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:40:03,207 INFO L93 Difference]: Finished difference Result 490 states and 1361 transitions. [2021-10-07 16:40:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 16:40:03,208 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:40:03,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:40:03,210 INFO L225 Difference]: With dead ends: 490 [2021-10-07 16:40:03,210 INFO L226 Difference]: Without dead ends: 480 [2021-10-07 16:40:03,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 9439.1ms TimeCoverageRelationStatistics Valid=445, Invalid=1811, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:40:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-10-07 16:40:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 306. [2021-10-07 16:40:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.232786885245902) internal successors, (986), 305 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 986 transitions. [2021-10-07 16:40:03,218 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 986 transitions. Word has length 18 [2021-10-07 16:40:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:40:03,218 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 986 transitions. [2021-10-07 16:40:03,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:40:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 986 transitions. [2021-10-07 16:40:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:40:03,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:40:03,219 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:40:03,239 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 16:40:03,419 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 16:40:03,420 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 16:40:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:40:03,420 INFO L82 PathProgramCache]: Analyzing trace with hash -294372738, now seen corresponding path program 67 times [2021-10-07 16:40:03,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:40:03,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109858014] [2021-10-07 16:40:03,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:40:03,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:40:03,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:40:03,422 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 16:40:03,460 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 16:40:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:40:05,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:40:05,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:40:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:05,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:40:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:08,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:40:08,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109858014] [2021-10-07 16:40:08,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109858014] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:40:08,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:40:08,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:40:08,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067196446] [2021-10-07 16:40:08,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:40:08,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:40:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:40:08,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:40:08,213 INFO L87 Difference]: Start difference. First operand 306 states and 986 transitions. Second operand has 22 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 16:40:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:40:18,732 INFO L93 Difference]: Finished difference Result 480 states and 1336 transitions. [2021-10-07 16:40:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 16:40:18,734 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:40:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:40:18,735 INFO L225 Difference]: With dead ends: 480 [2021-10-07 16:40:18,735 INFO L226 Difference]: Without dead ends: 470 [2021-10-07 16:40:18,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 10300.4ms TimeCoverageRelationStatistics Valid=394, Invalid=1498, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 16:40:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-07 16:40:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 312. [2021-10-07 16:40:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 3.2443729903536975) internal successors, (1009), 311 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1009 transitions. [2021-10-07 16:40:18,744 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1009 transitions. Word has length 18 [2021-10-07 16:40:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:40:18,744 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 1009 transitions. [2021-10-07 16:40:18,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:40:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1009 transitions. [2021-10-07 16:40:18,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:40:18,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:40:18,746 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:40:18,774 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 16:40:18,961 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 16:40:18,961 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:40:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:40:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash -212264898, now seen corresponding path program 68 times [2021-10-07 16:40:18,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:40:18,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563877730] [2021-10-07 16:40:18,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:40:18,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:40:18,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:40:18,965 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:40:18,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-07 16:40:21,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:40:21,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:40:21,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:40:21,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:40:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:21,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:40:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:24,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:40:24,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563877730] [2021-10-07 16:40:24,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563877730] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:40:24,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:40:24,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:40:24,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629047385] [2021-10-07 16:40:24,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:40:24,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:40:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:40:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:40:24,104 INFO L87 Difference]: Start difference. First operand 312 states and 1009 transitions. Second operand has 22 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 16:40:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:40:32,466 INFO L93 Difference]: Finished difference Result 460 states and 1300 transitions. [2021-10-07 16:40:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 16:40:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:40:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:40:32,468 INFO L225 Difference]: With dead ends: 460 [2021-10-07 16:40:32,468 INFO L226 Difference]: Without dead ends: 450 [2021-10-07 16:40:32,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 8325.6ms TimeCoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:40:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-07 16:40:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 308. [2021-10-07 16:40:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.228013029315961) internal successors, (991), 307 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 991 transitions. [2021-10-07 16:40:32,476 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 991 transitions. Word has length 18 [2021-10-07 16:40:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:40:32,476 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 991 transitions. [2021-10-07 16:40:32,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:40:32,476 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 991 transitions. [2021-10-07 16:40:32,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:40:32,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:40:32,477 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:40:32,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-07 16:40:32,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:40:32,678 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:40:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:40:32,679 INFO L82 PathProgramCache]: Analyzing trace with hash -813024656, now seen corresponding path program 69 times [2021-10-07 16:40:32,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:40:32,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783060850] [2021-10-07 16:40:32,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:40:32,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:40:32,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:40:32,681 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:40:32,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-07 16:40:34,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:40:34,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:40:34,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:40:34,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:40:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:35,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:40:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:37,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:40:37,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783060850] [2021-10-07 16:40:37,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783060850] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:40:37,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:40:37,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:40:37,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354208990] [2021-10-07 16:40:37,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:40:37,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:40:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:40:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:40:37,485 INFO L87 Difference]: Start difference. First operand 308 states and 991 transitions. Second operand has 22 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 16:40:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:40:46,393 INFO L93 Difference]: Finished difference Result 410 states and 1179 transitions. [2021-10-07 16:40:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:40:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:40:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:40:46,396 INFO L225 Difference]: With dead ends: 410 [2021-10-07 16:40:46,396 INFO L226 Difference]: Without dead ends: 400 [2021-10-07 16:40:46,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 8737.6ms TimeCoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 16:40:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-07 16:40:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 288. [2021-10-07 16:40:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 3.229965156794425) internal successors, (927), 287 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:40:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 927 transitions. [2021-10-07 16:40:46,402 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 927 transitions. Word has length 18 [2021-10-07 16:40:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:40:46,403 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 927 transitions. [2021-10-07 16:40:46,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:40:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 927 transitions. [2021-10-07 16:40:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:40:46,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:40:46,404 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:40:46,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-07 16:40:46,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:40:46,605 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:40:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:40:46,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1830782594, now seen corresponding path program 70 times [2021-10-07 16:40:46,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:40:46,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851569998] [2021-10-07 16:40:46,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:40:46,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:40:46,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:40:46,608 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:40:46,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-07 16:40:48,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:40:48,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:40:48,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:40:48,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:40:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:49,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:40:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:40:51,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:40:51,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851569998] [2021-10-07 16:40:51,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851569998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:40:51,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:40:51,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:40:51,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109484210] [2021-10-07 16:40:51,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:40:51,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:40:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:40:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:40:51,279 INFO L87 Difference]: Start difference. First operand 288 states and 927 transitions. Second operand has 22 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 16:41:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:41:04,729 INFO L93 Difference]: Finished difference Result 566 states and 1500 transitions. [2021-10-07 16:41:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-07 16:41:04,730 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:41:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:41:04,732 INFO L225 Difference]: With dead ends: 566 [2021-10-07 16:41:04,732 INFO L226 Difference]: Without dead ends: 546 [2021-10-07 16:41:04,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 12513.3ms TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:41:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-07 16:41:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 308. [2021-10-07 16:41:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.3061889250814334) internal successors, (1015), 307 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 1015 transitions. [2021-10-07 16:41:04,740 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 1015 transitions. Word has length 18 [2021-10-07 16:41:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:41:04,741 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 1015 transitions. [2021-10-07 16:41:04,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:41:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 1015 transitions. [2021-10-07 16:41:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:41:04,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:41:04,742 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:41:04,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-07 16:41:04,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:41:04,943 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:41:04,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:41:04,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1912890434, now seen corresponding path program 71 times [2021-10-07 16:41:04,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:41:04,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356252885] [2021-10-07 16:41:04,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:41:04,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:41:04,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:41:04,946 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:41:04,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-07 16:41:06,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:41:06,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:41:06,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 16:41:06,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:41:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:07,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:41:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:09,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:41:09,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356252885] [2021-10-07 16:41:09,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356252885] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:41:09,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:41:09,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:41:09,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677439161] [2021-10-07 16:41:09,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:41:09,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:41:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:41:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:41:09,071 INFO L87 Difference]: Start difference. First operand 308 states and 1015 transitions. Second operand has 22 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 16:41:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:41:21,673 INFO L93 Difference]: Finished difference Result 569 states and 1526 transitions. [2021-10-07 16:41:21,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-07 16:41:21,675 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:41:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:41:21,677 INFO L225 Difference]: With dead ends: 569 [2021-10-07 16:41:21,677 INFO L226 Difference]: Without dead ends: 554 [2021-10-07 16:41:21,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 11995.7ms TimeCoverageRelationStatistics Valid=866, Invalid=2916, Unknown=0, NotChecked=0, Total=3782 [2021-10-07 16:41:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-07 16:41:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 310. [2021-10-07 16:41:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.313915857605178) internal successors, (1024), 309 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 1024 transitions. [2021-10-07 16:41:21,685 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 1024 transitions. Word has length 18 [2021-10-07 16:41:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:41:21,685 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 1024 transitions. [2021-10-07 16:41:21,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:41:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 1024 transitions. [2021-10-07 16:41:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:41:21,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:41:21,686 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:41:21,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-07 16:41:21,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:41:21,887 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:41:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:41:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash 773451870, now seen corresponding path program 72 times [2021-10-07 16:41:21,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:41:21,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095395699] [2021-10-07 16:41:21,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:41:21,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:41:21,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:41:21,891 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:41:21,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-07 16:41:23,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:41:23,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:41:24,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:41:24,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:41:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:24,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:41:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:26,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:41:26,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095395699] [2021-10-07 16:41:26,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095395699] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:41:26,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:41:26,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:41:26,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225903589] [2021-10-07 16:41:26,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:41:26,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:41:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:41:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:41:26,948 INFO L87 Difference]: Start difference. First operand 310 states and 1024 transitions. Second operand has 22 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 16:41:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:41:41,681 INFO L93 Difference]: Finished difference Result 565 states and 1553 transitions. [2021-10-07 16:41:41,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:41:41,682 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:41:41,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:41:41,684 INFO L225 Difference]: With dead ends: 565 [2021-10-07 16:41:41,684 INFO L226 Difference]: Without dead ends: 550 [2021-10-07 16:41:41,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 14201.6ms TimeCoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 16:41:41,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-07 16:41:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 326. [2021-10-07 16:41:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.3661538461538463) internal successors, (1094), 325 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:41:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1094 transitions. [2021-10-07 16:41:41,694 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1094 transitions. Word has length 18 [2021-10-07 16:41:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:41:41,694 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1094 transitions. [2021-10-07 16:41:41,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:41:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1094 transitions. [2021-10-07 16:41:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:41:41,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:41:41,695 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:41:41,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-07 16:41:41,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:41:41,896 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:41:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:41:41,897 INFO L82 PathProgramCache]: Analyzing trace with hash 855559710, now seen corresponding path program 73 times [2021-10-07 16:41:41,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:41:41,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294293125] [2021-10-07 16:41:41,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:41:41,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:41:41,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:41:41,900 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:41:41,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-07 16:41:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:41:43,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:41:43,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:41:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:44,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:41:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:41:46,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:41:46,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294293125] [2021-10-07 16:41:46,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294293125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:41:46,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:41:46,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 16:41:46,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075358567] [2021-10-07 16:41:46,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:41:46,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:41:46,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:41:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:41:46,707 INFO L87 Difference]: Start difference. First operand 326 states and 1094 transitions. Second operand has 22 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 16:42:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:02,631 INFO L93 Difference]: Finished difference Result 562 states and 1543 transitions. [2021-10-07 16:42:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-07 16:42:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 22 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 18 [2021-10-07 16:42:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:02,634 INFO L225 Difference]: With dead ends: 562 [2021-10-07 16:42:02,634 INFO L226 Difference]: Without dead ends: 542 [2021-10-07 16:42:02,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 15269.9ms TimeCoverageRelationStatistics Valid=659, Invalid=2763, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 16:42:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-07 16:42:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 314. [2021-10-07 16:42:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.3226837060702876) internal successors, (1040), 313 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1040 transitions. [2021-10-07 16:42:02,644 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1040 transitions. Word has length 18 [2021-10-07 16:42:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:02,644 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1040 transitions. [2021-10-07 16:42:02,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 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 16:42:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1040 transitions. [2021-10-07 16:42:02,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:42:02,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:02,646 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:02,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:02,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:02,846 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:02,847 INFO L82 PathProgramCache]: Analyzing trace with hash -646128894, now seen corresponding path program 74 times [2021-10-07 16:42:02,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:02,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292307289] [2021-10-07 16:42:02,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:42:02,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:02,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:02,850 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:02,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-07 16:42:05,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:42:05,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:05,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:42:05,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-10-07 16:42:05,425 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:42:05,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-07 16:42:05,455 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:42:05,455 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 16:42:05,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:05,627 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. [2021-10-07 16:42:05,631 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:42:05,631 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:42:05,632 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:42:05,632 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:42:05,632 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:42:05,632 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:42:05,632 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:42:05,633 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:42:05,633 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:42:05,633 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:42:05,633 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:42:05,640 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:42:05,640 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:42:05,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:42:05 BasicIcfg [2021-10-07 16:42:05,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:42:05,643 INFO L168 Benchmark]: Toolchain (without parser) took 811983.14 ms. Allocated memory was 172.0 MB in the beginning and 216.0 MB in the end (delta: 44.0 MB). Free memory was 152.0 MB in the beginning and 39.4 MB in the end (delta: 112.6 MB). Peak memory consumption was 154.4 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:05,644 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 172.0 MB. Free memory is still 142.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:42:05,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.29 ms. Allocated memory is still 172.0 MB. Free memory was 151.6 MB in the beginning and 140.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:05,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.78 ms. Allocated memory is still 172.0 MB. Free memory was 140.6 MB in the beginning and 139.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:05,645 INFO L168 Benchmark]: Boogie Preprocessor took 103.40 ms. Allocated memory is still 172.0 MB. Free memory was 139.1 MB in the beginning and 154.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:05,645 INFO L168 Benchmark]: RCFGBuilder took 709.02 ms. Allocated memory is still 172.0 MB. Free memory was 154.2 MB in the beginning and 139.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:05,646 INFO L168 Benchmark]: TraceAbstraction took 810612.64 ms. Allocated memory was 172.0 MB in the beginning and 216.0 MB in the end (delta: 44.0 MB). Free memory was 139.0 MB in the beginning and 39.4 MB in the end (delta: 99.6 MB). Peak memory consumption was 143.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:42:05,647 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 172.0 MB. Free memory is still 142.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 470.29 ms. Allocated memory is still 172.0 MB. Free memory was 151.6 MB in the beginning and 140.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.78 ms. Allocated memory is still 172.0 MB. Free memory was 140.6 MB in the beginning and 139.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.40 ms. Allocated memory is still 172.0 MB. Free memory was 139.1 MB in the beginning and 154.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 709.02 ms. Allocated memory is still 172.0 MB. Free memory was 154.2 MB in the beginning and 139.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 810612.64 ms. Allocated memory was 172.0 MB in the beginning and 216.0 MB in the end (delta: 44.0 MB). Free memory was 139.0 MB in the beginning and 39.4 MB in the end (delta: 99.6 MB). Peak memory consumption was 143.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8522.0ms, 89 PlacesBefore, 32 PlacesAfterwards, 88 TransitionsBefore, 27 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 8 FixpointIterations, 57 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 90 TotalNumberOfCompositions, 707 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 685, positive: 683, positive conditional: 0, positive unconditional: 683, 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: 317, positive: 315, positive conditional: 0, positive unconditional: 315, 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: 317, positive: 315, positive conditional: 0, positive unconditional: 315, 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: 44, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 685, positive: 368, positive conditional: 0, positive unconditional: 368, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 317, unknown conditional: 0, unknown unconditional: 317] , 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: 78]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - 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 analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 810450.6ms, OverallIterations: 81, TraceHistogramMax: 4, EmptinessCheckTime: 83.6ms, AutomataDifference: 540331.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8587.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3137 SDtfs, 13602 SDslu, 24236 SDs, 0 SdLazy, 29155 SolverSat, 4047 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 91209.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4080 GetRequests, 1090 SyntacticMatches, 2 SemanticMatches, 2988 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29302 ImplicationChecksByTransitivity, 517547.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=68, InterpolantAutomatonStates: 2638, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 723.4ms AutomataMinimizationTime, 80 MinimizatonAttempts, 10468 StatesRemovedByMinimization, 73 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 544.2ms SsaConstructionTime, 9376.6ms SatisfiabilityAnalysisTime, 163486.7ms InterpolantComputationTime, 1285 NumberOfCodeBlocks, 1285 NumberOfCodeBlocksAsserted, 160 NumberOfCheckSat, 2410 ConstructedInterpolants, 0 QuantifiedInterpolants, 51432 SizeOfPredicates, 462 NumberOfNonLiveVariables, 5733 ConjunctsInSsa, 1451 ConjunctsInUnsatCore, 160 InterpolantComputations, 14 PerfectInterpolantSequences, 4/1038 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