/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-counter-determinism.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:29:09,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:29:09,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:29:09,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:29:09,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:29:09,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:29:09,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:29:09,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:29:09,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:29:09,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:29:09,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:29:09,263 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:29:09,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:29:09,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:29:09,264 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:29:09,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:29:09,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:29:09,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:29:09,267 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:29:09,267 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:29:09,268 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:29:09,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:29:09,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:29:09,269 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:29:09,269 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:29:09,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:29:09,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:29:09,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:29:09,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:29:09,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:29:09,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:29:09,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:29:09,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:29:09,272 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:29:09,272 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:29:09,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:29:09,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:29:09,273 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:29:09,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:29:09,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:29:09,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:29:09,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:29:09,782 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:29:09,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2021-10-08 17:29:09,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec62c608/81993c943be8458b95bf6fb61fd2f11b/FLAG2047efcae [2021-10-08 17:29:10,494 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:29:10,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2021-10-08 17:29:10,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec62c608/81993c943be8458b95bf6fb61fd2f11b/FLAG2047efcae [2021-10-08 17:29:10,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec62c608/81993c943be8458b95bf6fb61fd2f11b [2021-10-08 17:29:10,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:29:10,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:29:10,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:29:10,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:29:10,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:29:10,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:29:10" (1/1) ... [2021-10-08 17:29:10,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dff2c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:10, skipping insertion in model container [2021-10-08 17:29:10,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:29:10" (1/1) ... [2021-10-08 17:29:10,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:29:10,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:29:11,137 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-counter-determinism.wvr.c[2469,2482] [2021-10-08 17:29:11,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:29:11,168 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:29:11,239 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-counter-determinism.wvr.c[2469,2482] [2021-10-08 17:29:11,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:29:11,273 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:29:11,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11 WrapperNode [2021-10-08 17:29:11,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:29:11,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:29:11,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:29:11,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:29:11,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:29:11,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:29:11,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:29:11,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:29:11,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:29:11,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:29:11,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:29:11,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:29:11,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (1/1) ... [2021-10-08 17:29:11,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:29:11,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:29:11,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:29:11,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:29:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:29:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:29:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:29:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:29:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:29:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:29:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:29:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 17:29:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 17:29:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:29:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:29:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:29:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:29:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:29:11,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:29:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:29:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:29:11,570 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:29:12,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:29:12,243 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-08 17:29:12,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:29:12 BoogieIcfgContainer [2021-10-08 17:29:12,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:29:12,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:29:12,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:29:12,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:29:12,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:29:10" (1/3) ... [2021-10-08 17:29:12,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed6d1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:29:12, skipping insertion in model container [2021-10-08 17:29:12,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:29:11" (2/3) ... [2021-10-08 17:29:12,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed6d1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:29:12, skipping insertion in model container [2021-10-08 17:29:12,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:29:12" (3/3) ... [2021-10-08 17:29:12,256 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2021-10-08 17:29:12,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:29:12,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-08 17:29:12,263 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:29:12,313 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,316 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,316 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,317 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,317 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,317 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,319 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,319 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,320 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,323 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,324 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,325 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,328 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,328 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,328 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,329 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,329 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,330 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,331 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,331 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,333 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,334 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,334 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,335 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,336 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,337 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,337 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,338 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,342 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,344 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,344 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,344 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,345 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,350 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,350 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,350 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,351 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,351 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,351 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,351 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,352 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,352 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,352 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,352 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,352 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,353 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,356 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,356 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,357 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,357 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,357 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,357 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,357 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,358 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,360 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,360 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,360 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,361 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,361 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,372 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,386 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,387 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,388 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,388 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,388 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,392 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,392 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,393 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,393 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,393 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,393 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,393 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:29:12,405 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 17:29:12,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:29:12,470 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:29:12,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-08 17:29:12,492 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:29:12,506 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 137 transitions, 306 flow [2021-10-08 17:29:12,510 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 137 transitions, 306 flow [2021-10-08 17:29:12,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 137 transitions, 306 flow [2021-10-08 17:29:12,666 INFO L129 PetriNetUnfolder]: 9/133 cut-off events. [2021-10-08 17:29:12,666 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 17:29:12,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 9/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2021-10-08 17:29:12,680 INFO L116 LiptonReduction]: Number of co-enabled transitions 3160 [2021-10-08 17:29:31,533 INFO L131 LiptonReduction]: Checked pairs total: 3725 [2021-10-08 17:29:31,533 INFO L133 LiptonReduction]: Total number of compositions: 124 [2021-10-08 17:29:31,547 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 51 transitions, 134 flow [2021-10-08 17:29:31,607 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:29:31,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:31,620 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:29:31,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash 560, now seen corresponding path program 1 times [2021-10-08 17:29:31,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:31,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403102807] [2021-10-08 17:29:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:31,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:31,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:31,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:29:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:31,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:29:31,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:31,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:31,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:31,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403102807] [2021-10-08 17:29:31,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403102807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:31,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:31,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:29:31,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745346448] [2021-10-08 17:29:31,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:29:31,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:31,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:29:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:29:31,779 INFO L87 Difference]: Start difference. First operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:31,837 INFO L93 Difference]: Finished difference Result 640 states and 2671 transitions. [2021-10-08 17:29:31,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:29:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 17:29:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:31,872 INFO L225 Difference]: With dead ends: 640 [2021-10-08 17:29:31,872 INFO L226 Difference]: Without dead ends: 640 [2021-10-08 17:29:31,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:29:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-08 17:29:31,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-10-08 17:29:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 625 states have (on average 4.2736) internal successors, (2671), 639 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2671 transitions. [2021-10-08 17:29:32,007 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2671 transitions. Word has length 1 [2021-10-08 17:29:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:32,007 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2671 transitions. [2021-10-08 17:29:32,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2671 transitions. [2021-10-08 17:29:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:29:32,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:32,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:29:32,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:32,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:32,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash 552890, now seen corresponding path program 1 times [2021-10-08 17:29:32,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:32,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127179022] [2021-10-08 17:29:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:32,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:32,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:32,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:32,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:29:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:32,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:32,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:32,745 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-08 17:29:32,747 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 5 case distinctions, treesize of input 44 treesize of output 76 [2021-10-08 17:29:32,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 292 [2021-10-08 17:29:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:34,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:34,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127179022] [2021-10-08 17:29:34,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127179022] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:34,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:34,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:29:34,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173185942] [2021-10-08 17:29:34,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:29:34,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:29:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:34,187 INFO L87 Difference]: Start difference. First operand 640 states and 2671 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:34,274 INFO L93 Difference]: Finished difference Result 610 states and 2557 transitions. [2021-10-08 17:29:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:34,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:29:34,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:34,306 INFO L225 Difference]: With dead ends: 610 [2021-10-08 17:29:34,306 INFO L226 Difference]: Without dead ends: 610 [2021-10-08 17:29:34,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-08 17:29:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-10-08 17:29:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 597 states have (on average 4.283082077051926) internal successors, (2557), 609 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2557 transitions. [2021-10-08 17:29:34,350 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2557 transitions. Word has length 3 [2021-10-08 17:29:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:34,351 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 2557 transitions. [2021-10-08 17:29:34,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2557 transitions. [2021-10-08 17:29:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:29:34,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:34,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:29:34,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:34,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:34,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:34,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:34,568 INFO L82 PathProgramCache]: Analyzing trace with hash 552891, now seen corresponding path program 1 times [2021-10-08 17:29:34,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:34,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094394517] [2021-10-08 17:29:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:34,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:34,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:34,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:34,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:29:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:34,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:29:34,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:34,923 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:29:34,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 237 treesize of output 266 [2021-10-08 17:29:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:39,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:39,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:39,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094394517] [2021-10-08 17:29:39,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094394517] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:39,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:39,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:29:39,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448606476] [2021-10-08 17:29:39,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:29:39,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:29:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:39,050 INFO L87 Difference]: Start difference. First operand 610 states and 2557 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:39,131 INFO L93 Difference]: Finished difference Result 580 states and 2443 transitions. [2021-10-08 17:29:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:29:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:39,140 INFO L225 Difference]: With dead ends: 580 [2021-10-08 17:29:39,141 INFO L226 Difference]: Without dead ends: 580 [2021-10-08 17:29:39,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-08 17:29:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-10-08 17:29:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 569 states have (on average 4.293497363796134) internal successors, (2443), 579 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2443 transitions. [2021-10-08 17:29:39,174 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2443 transitions. Word has length 3 [2021-10-08 17:29:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:39,175 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 2443 transitions. [2021-10-08 17:29:39,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2443 transitions. [2021-10-08 17:29:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:29:39,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:39,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:29:39,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:39,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:39,389 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:39,390 INFO L82 PathProgramCache]: Analyzing trace with hash 531342152, now seen corresponding path program 1 times [2021-10-08 17:29:39,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:39,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589364052] [2021-10-08 17:29:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:39,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:39,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:39,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:29:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:39,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:29:39,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:39,722 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:29:39,723 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 17:29:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:40,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:40,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:40,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589364052] [2021-10-08 17:29:40,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589364052] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:40,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:40,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:29:40,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385002873] [2021-10-08 17:29:40,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:29:40,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:29:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:29:40,296 INFO L87 Difference]: Start difference. First operand 580 states and 2443 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:40,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:40,348 INFO L93 Difference]: Finished difference Result 562 states and 2389 transitions. [2021-10-08 17:29:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:40,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:29:40,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:40,356 INFO L225 Difference]: With dead ends: 562 [2021-10-08 17:29:40,356 INFO L226 Difference]: Without dead ends: 562 [2021-10-08 17:29:40,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:29:40,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-08 17:29:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-08 17:29:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 553 states have (on average 4.320072332730561) internal successors, (2389), 561 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 2389 transitions. [2021-10-08 17:29:40,387 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 2389 transitions. Word has length 5 [2021-10-08 17:29:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:40,388 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 2389 transitions. [2021-10-08 17:29:40,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 2389 transitions. [2021-10-08 17:29:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:29:40,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:40,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:29:40,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:40,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:40,602 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:40,603 INFO L82 PathProgramCache]: Analyzing trace with hash 531342153, now seen corresponding path program 1 times [2021-10-08 17:29:40,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:40,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670009451] [2021-10-08 17:29:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:40,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:40,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:40,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:40,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:29:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:40,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:29:40,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:40,915 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 17:29:40,915 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 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-08 17:29:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:41,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:41,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:41,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670009451] [2021-10-08 17:29:41,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670009451] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:41,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:41,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:29:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878273588] [2021-10-08 17:29:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:29:41,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:29:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:41,085 INFO L87 Difference]: Start difference. First operand 562 states and 2389 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:41,139 INFO L93 Difference]: Finished difference Result 544 states and 2335 transitions. [2021-10-08 17:29:41,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:41,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:29:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:41,146 INFO L225 Difference]: With dead ends: 544 [2021-10-08 17:29:41,147 INFO L226 Difference]: Without dead ends: 544 [2021-10-08 17:29:41,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:41,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-08 17:29:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-10-08 17:29:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 4.348230912476723) internal successors, (2335), 543 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2335 transitions. [2021-10-08 17:29:41,175 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2335 transitions. Word has length 5 [2021-10-08 17:29:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:41,175 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 2335 transitions. [2021-10-08 17:29:41,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2335 transitions. [2021-10-08 17:29:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:29:41,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:41,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:41,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:41,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:41,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash -481288240, now seen corresponding path program 1 times [2021-10-08 17:29:41,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:41,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928098229] [2021-10-08 17:29:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:41,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:41,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:41,393 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:41,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:29:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:41,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:29:41,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:41,692 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:29:41,693 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 17:29:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:42,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:42,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:42,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928098229] [2021-10-08 17:29:42,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928098229] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:42,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:42,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:29:42,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585714187] [2021-10-08 17:29:42,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:29:42,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:42,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:29:42,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:29:42,281 INFO L87 Difference]: Start difference. First operand 544 states and 2335 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:42,326 INFO L93 Difference]: Finished difference Result 514 states and 2221 transitions. [2021-10-08 17:29:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:29:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:42,333 INFO L225 Difference]: With dead ends: 514 [2021-10-08 17:29:42,333 INFO L226 Difference]: Without dead ends: 514 [2021-10-08 17:29:42,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:29:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-08 17:29:42,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2021-10-08 17:29:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 509 states have (on average 4.363457760314342) internal successors, (2221), 513 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:42,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 2221 transitions. [2021-10-08 17:29:42,358 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 2221 transitions. Word has length 7 [2021-10-08 17:29:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:42,359 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 2221 transitions. [2021-10-08 17:29:42,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 2221 transitions. [2021-10-08 17:29:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:29:42,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:42,360 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:42,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:42,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:42,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:42,573 INFO L82 PathProgramCache]: Analyzing trace with hash -481288239, now seen corresponding path program 1 times [2021-10-08 17:29:42,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:42,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240232810] [2021-10-08 17:29:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:42,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:42,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:42,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:42,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:29:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:42,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:29:42,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:42,837 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 17:29:42,837 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 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-08 17:29:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:42,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:43,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:43,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240232810] [2021-10-08 17:29:43,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240232810] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:43,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:43,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:29:43,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553334039] [2021-10-08 17:29:43,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:29:43,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:29:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:43,026 INFO L87 Difference]: Start difference. First operand 514 states and 2221 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:43,073 INFO L93 Difference]: Finished difference Result 484 states and 2107 transitions. [2021-10-08 17:29:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:43,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:29:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:43,087 INFO L225 Difference]: With dead ends: 484 [2021-10-08 17:29:43,088 INFO L226 Difference]: Without dead ends: 484 [2021-10-08 17:29:43,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-08 17:29:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-08 17:29:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 4.38045738045738) internal successors, (2107), 483 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 2107 transitions. [2021-10-08 17:29:43,131 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 2107 transitions. Word has length 7 [2021-10-08 17:29:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:43,131 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 2107 transitions. [2021-10-08 17:29:43,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 2107 transitions. [2021-10-08 17:29:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:29:43,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:43,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:43,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:43,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:43,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1338484235, now seen corresponding path program 1 times [2021-10-08 17:29:43,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:43,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776440814] [2021-10-08 17:29:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:43,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:43,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:43,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:29:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:43,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:43,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:43,675 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:29:43,675 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 17:29:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:44,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:44,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:44,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776440814] [2021-10-08 17:29:44,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776440814] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:44,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:44,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 17:29:44,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355036111] [2021-10-08 17:29:44,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:29:44,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:29:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:29:44,203 INFO L87 Difference]: Start difference. First operand 484 states and 2107 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:44,266 INFO L93 Difference]: Finished difference Result 403 states and 1702 transitions. [2021-10-08 17:29:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:44,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 17:29:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:44,272 INFO L225 Difference]: With dead ends: 403 [2021-10-08 17:29:44,272 INFO L226 Difference]: Without dead ends: 403 [2021-10-08 17:29:44,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.9ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:29:44,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-08 17:29:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-08 17:29:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 4.2443890274314215) internal successors, (1702), 402 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1702 transitions. [2021-10-08 17:29:44,295 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1702 transitions. Word has length 9 [2021-10-08 17:29:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:44,295 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1702 transitions. [2021-10-08 17:29:44,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1702 transitions. [2021-10-08 17:29:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:29:44,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:44,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:44,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-08 17:29:44,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:44,510 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:44,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1338484237, now seen corresponding path program 1 times [2021-10-08 17:29:44,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:44,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765064050] [2021-10-08 17:29:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:44,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:44,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:44,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:44,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:29:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:44,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:29:44,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:44,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:44,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:44,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765064050] [2021-10-08 17:29:44,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765064050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:44,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:44,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:29:44,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984965569] [2021-10-08 17:29:44,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:29:44,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:29:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:29:44,817 INFO L87 Difference]: Start difference. First operand 403 states and 1702 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:44,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:44,870 INFO L93 Difference]: Finished difference Result 322 states and 1297 transitions. [2021-10-08 17:29:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:44,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 17:29:44,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:44,875 INFO L225 Difference]: With dead ends: 322 [2021-10-08 17:29:44,876 INFO L226 Difference]: Without dead ends: 322 [2021-10-08 17:29:44,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:29:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-08 17:29:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-08 17:29:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1297 transitions. [2021-10-08 17:29:44,890 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1297 transitions. Word has length 9 [2021-10-08 17:29:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:44,891 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1297 transitions. [2021-10-08 17:29:44,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1297 transitions. [2021-10-08 17:29:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 17:29:44,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:44,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:44,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:45,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:45,107 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1096903796, now seen corresponding path program 1 times [2021-10-08 17:29:45,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:45,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64752081] [2021-10-08 17:29:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:45,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:45,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:45,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:45,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:29:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:45,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:29:45,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:45,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:45,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:45,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64752081] [2021-10-08 17:29:45,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64752081] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:45,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:45,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:29:45,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894053217] [2021-10-08 17:29:45,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:29:45,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:29:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:45,459 INFO L87 Difference]: Start difference. First operand 322 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:45,492 INFO L93 Difference]: Finished difference Result 609 states and 2288 transitions. [2021-10-08 17:29:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:29:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 17:29:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:45,499 INFO L225 Difference]: With dead ends: 609 [2021-10-08 17:29:45,499 INFO L226 Difference]: Without dead ends: 554 [2021-10-08 17:29:45,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:29:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-08 17:29:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2021-10-08 17:29:45,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 3.815551537070524) internal successors, (2110), 553 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2110 transitions. [2021-10-08 17:29:45,525 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2110 transitions. Word has length 25 [2021-10-08 17:29:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:45,525 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 2110 transitions. [2021-10-08 17:29:45,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2110 transitions. [2021-10-08 17:29:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:45,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:45,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:45,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:45,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:45,730 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:45,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1451231745, now seen corresponding path program 1 times [2021-10-08 17:29:45,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:45,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398489764] [2021-10-08 17:29:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:45,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:45,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:45,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:45,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:29:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:45,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:45,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:45,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:46,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:46,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398489764] [2021-10-08 17:29:46,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398489764] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:46,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:46,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-08 17:29:46,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595906432] [2021-10-08 17:29:46,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:29:46,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:46,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:29:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:29:46,075 INFO L87 Difference]: Start difference. First operand 554 states and 2110 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:46,373 INFO L93 Difference]: Finished difference Result 754 states and 2819 transitions. [2021-10-08 17:29:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:29:46,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:46,382 INFO L225 Difference]: With dead ends: 754 [2021-10-08 17:29:46,382 INFO L226 Difference]: Without dead ends: 650 [2021-10-08 17:29:46,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:29:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-10-08 17:29:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 498. [2021-10-08 17:29:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.869215291750503) internal successors, (1923), 497 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1923 transitions. [2021-10-08 17:29:46,410 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1923 transitions. Word has length 26 [2021-10-08 17:29:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:46,410 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1923 transitions. [2021-10-08 17:29:46,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1923 transitions. [2021-10-08 17:29:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:46,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:46,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:46,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:46,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:46,627 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash 48296149, now seen corresponding path program 1 times [2021-10-08 17:29:46,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:46,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203488479] [2021-10-08 17:29:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:29:46,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:46,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:46,631 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:46,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:29:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:46,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:29:46,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:46,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:46,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:46,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203488479] [2021-10-08 17:29:46,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203488479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:29:46,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:29:46,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:29:46,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954687886] [2021-10-08 17:29:46,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:29:46,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:29:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:29:46,982 INFO L87 Difference]: Start difference. First operand 498 states and 1923 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:47,421 INFO L93 Difference]: Finished difference Result 1074 states and 4240 transitions. [2021-10-08 17:29:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:29:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 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 26 [2021-10-08 17:29:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:47,434 INFO L225 Difference]: With dead ends: 1074 [2021-10-08 17:29:47,434 INFO L226 Difference]: Without dead ends: 1074 [2021-10-08 17:29:47,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 142.4ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:29:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-10-08 17:29:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 612. [2021-10-08 17:29:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.9361702127659575) internal successors, (2405), 611 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 2405 transitions. [2021-10-08 17:29:47,469 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 2405 transitions. Word has length 26 [2021-10-08 17:29:47,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:47,469 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 2405 transitions. [2021-10-08 17:29:47,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 2405 transitions. [2021-10-08 17:29:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:47,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:47,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:47,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:47,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:47,687 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:47,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:47,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1759287297, now seen corresponding path program 2 times [2021-10-08 17:29:47,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:47,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344472541] [2021-10-08 17:29:47,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:29:47,689 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:47,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:47,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:29:47,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:29:47,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:47,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:47,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:47,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:48,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:48,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344472541] [2021-10-08 17:29:48,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344472541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:48,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:48,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:29:48,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686690037] [2021-10-08 17:29:48,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:29:48,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:29:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:29:48,060 INFO L87 Difference]: Start difference. First operand 612 states and 2405 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:48,447 INFO L93 Difference]: Finished difference Result 1156 states and 4367 transitions. [2021-10-08 17:29:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:29:48,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:48,459 INFO L225 Difference]: With dead ends: 1156 [2021-10-08 17:29:48,459 INFO L226 Difference]: Without dead ends: 1148 [2021-10-08 17:29:48,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-10-08 17:29:48,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 766. [2021-10-08 17:29:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 3.9908496732026144) internal successors, (3053), 765 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 3053 transitions. [2021-10-08 17:29:48,498 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 3053 transitions. Word has length 26 [2021-10-08 17:29:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:48,499 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 3053 transitions. [2021-10-08 17:29:48,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 3053 transitions. [2021-10-08 17:29:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:48,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:48,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:48,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:48,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:48,715 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:48,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:48,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1823457943, now seen corresponding path program 2 times [2021-10-08 17:29:48,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:48,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868761702] [2021-10-08 17:29:48,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:29:48,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:48,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:48,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:48,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:29:48,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:29:48,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:48,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:48,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:49,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:49,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:49,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868761702] [2021-10-08 17:29:49,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868761702] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:49,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:49,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-08 17:29:49,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007825962] [2021-10-08 17:29:49,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:29:49,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:29:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:29:49,141 INFO L87 Difference]: Start difference. First operand 766 states and 3053 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:49,419 INFO L93 Difference]: Finished difference Result 1104 states and 4199 transitions. [2021-10-08 17:29:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:29:49,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:49,430 INFO L225 Difference]: With dead ends: 1104 [2021-10-08 17:29:49,430 INFO L226 Difference]: Without dead ends: 1066 [2021-10-08 17:29:49,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:29:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-10-08 17:29:49,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 866. [2021-10-08 17:29:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 3.954913294797688) internal successors, (3421), 865 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 3421 transitions. [2021-10-08 17:29:49,473 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 3421 transitions. Word has length 26 [2021-10-08 17:29:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:49,473 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 3421 transitions. [2021-10-08 17:29:49,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 3421 transitions. [2021-10-08 17:29:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:49,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:49,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:49,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:49,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:49,691 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1531658219, now seen corresponding path program 3 times [2021-10-08 17:29:49,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:49,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954059976] [2021-10-08 17:29:49,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:29:49,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:49,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:49,695 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:49,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:29:49,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:29:49,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:49,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:29:49,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:50,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:50,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:50,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954059976] [2021-10-08 17:29:50,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954059976] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:29:50,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:29:50,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:29:50,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999183476] [2021-10-08 17:29:50,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:29:50,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:50,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:29:50,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:29:50,150 INFO L87 Difference]: Start difference. First operand 866 states and 3421 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:50,606 INFO L93 Difference]: Finished difference Result 1620 states and 6219 transitions. [2021-10-08 17:29:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:29:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 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 26 [2021-10-08 17:29:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:50,624 INFO L225 Difference]: With dead ends: 1620 [2021-10-08 17:29:50,624 INFO L226 Difference]: Without dead ends: 1620 [2021-10-08 17:29:50,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:29:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-10-08 17:29:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 890. [2021-10-08 17:29:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 4.0517435320584925) internal successors, (3602), 889 states have internal predecessors, (3602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 3602 transitions. [2021-10-08 17:29:50,674 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 3602 transitions. Word has length 26 [2021-10-08 17:29:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:50,675 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 3602 transitions. [2021-10-08 17:29:50,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 3602 transitions. [2021-10-08 17:29:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:50,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:50,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:50,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:50,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:50,897 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:50,898 INFO L82 PathProgramCache]: Analyzing trace with hash 998903783, now seen corresponding path program 3 times [2021-10-08 17:29:50,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:50,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858363888] [2021-10-08 17:29:50,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:29:50,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:50,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:50,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:50,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:29:51,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:29:51,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:51,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:51,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:51,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:51,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:51,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858363888] [2021-10-08 17:29:51,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858363888] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:51,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:51,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:29:51,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052598631] [2021-10-08 17:29:51,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:29:51,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:51,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:29:51,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:29:51,366 INFO L87 Difference]: Start difference. First operand 890 states and 3602 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:51,751 INFO L93 Difference]: Finished difference Result 1542 states and 5940 transitions. [2021-10-08 17:29:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:29:51,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:51,766 INFO L225 Difference]: With dead ends: 1542 [2021-10-08 17:29:51,766 INFO L226 Difference]: Without dead ends: 1448 [2021-10-08 17:29:51,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-10-08 17:29:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1042. [2021-10-08 17:29:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1041 states have (on average 4.115273775216139) internal successors, (4284), 1041 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 4284 transitions. [2021-10-08 17:29:51,815 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 4284 transitions. Word has length 26 [2021-10-08 17:29:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:51,816 INFO L470 AbstractCegarLoop]: Abstraction has 1042 states and 4284 transitions. [2021-10-08 17:29:51,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 4284 transitions. [2021-10-08 17:29:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:51,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:51,821 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:51,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-08 17:29:52,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:52,034 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:52,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash -730634821, now seen corresponding path program 4 times [2021-10-08 17:29:52,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:52,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143078146] [2021-10-08 17:29:52,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:29:52,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:52,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:52,037 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:52,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:29:52,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:29:52,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:52,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:52,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:52,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:52,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:52,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143078146] [2021-10-08 17:29:52,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143078146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:52,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:52,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:29:52,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115362955] [2021-10-08 17:29:52,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:29:52,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:29:52,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:29:52,385 INFO L87 Difference]: Start difference. First operand 1042 states and 4284 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:52,702 INFO L93 Difference]: Finished difference Result 1996 states and 7852 transitions. [2021-10-08 17:29:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:29:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 26 [2021-10-08 17:29:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:52,742 INFO L225 Difference]: With dead ends: 1996 [2021-10-08 17:29:52,742 INFO L226 Difference]: Without dead ends: 1938 [2021-10-08 17:29:52,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2021-10-08 17:29:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1236. [2021-10-08 17:29:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 4.238056680161943) internal successors, (5234), 1235 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 5234 transitions. [2021-10-08 17:29:52,804 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 5234 transitions. Word has length 26 [2021-10-08 17:29:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:52,804 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 5234 transitions. [2021-10-08 17:29:52,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:52,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 5234 transitions. [2021-10-08 17:29:52,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:52,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:52,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:52,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:53,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:53,023 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:53,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:53,025 INFO L82 PathProgramCache]: Analyzing trace with hash -624661175, now seen corresponding path program 5 times [2021-10-08 17:29:53,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:53,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895442334] [2021-10-08 17:29:53,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:29:53,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:53,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:53,027 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:53,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:29:53,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:29:53,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:53,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:53,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:53,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:53,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:53,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895442334] [2021-10-08 17:29:53,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895442334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:53,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:53,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:29:53,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648826956] [2021-10-08 17:29:53,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:29:53,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:29:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:29:53,398 INFO L87 Difference]: Start difference. First operand 1236 states and 5234 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:53,536 INFO L93 Difference]: Finished difference Result 1436 states and 5926 transitions. [2021-10-08 17:29:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:29:53,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:53,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:53,547 INFO L225 Difference]: With dead ends: 1436 [2021-10-08 17:29:53,547 INFO L226 Difference]: Without dead ends: 1404 [2021-10-08 17:29:53,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:29:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-10-08 17:29:53,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1176. [2021-10-08 17:29:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 4.1617021276595745) internal successors, (4890), 1175 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 4890 transitions. [2021-10-08 17:29:53,606 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 4890 transitions. Word has length 26 [2021-10-08 17:29:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:53,606 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 4890 transitions. [2021-10-08 17:29:53,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 4890 transitions. [2021-10-08 17:29:53,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:53,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:53,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:53,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:53,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:53,826 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash -318778025, now seen corresponding path program 4 times [2021-10-08 17:29:53,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:53,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135084691] [2021-10-08 17:29:53,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:29:53,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:53,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:53,829 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:53,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:29:54,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:29:54,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:54,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:54,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:54,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:54,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:54,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135084691] [2021-10-08 17:29:54,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135084691] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:54,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:54,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:29:54,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735694542] [2021-10-08 17:29:54,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:29:54,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:29:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:29:54,180 INFO L87 Difference]: Start difference. First operand 1176 states and 4890 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:54,591 INFO L93 Difference]: Finished difference Result 1830 states and 7170 transitions. [2021-10-08 17:29:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:29:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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 26 [2021-10-08 17:29:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:54,601 INFO L225 Difference]: With dead ends: 1830 [2021-10-08 17:29:54,602 INFO L226 Difference]: Without dead ends: 1784 [2021-10-08 17:29:54,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:54,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-10-08 17:29:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1252. [2021-10-08 17:29:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 4.212629896083134) internal successors, (5270), 1251 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 5270 transitions. [2021-10-08 17:29:54,662 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 5270 transitions. Word has length 26 [2021-10-08 17:29:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:54,662 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 5270 transitions. [2021-10-08 17:29:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 5270 transitions. [2021-10-08 17:29:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:54,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:54,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:54,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:54,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:54,882 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:54,883 INFO L82 PathProgramCache]: Analyzing trace with hash -91148947, now seen corresponding path program 5 times [2021-10-08 17:29:54,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:54,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122792129] [2021-10-08 17:29:54,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:29:54,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:54,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:54,885 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:54,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:29:55,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:29:55,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:55,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:29:55,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:55,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:55,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:55,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122792129] [2021-10-08 17:29:55,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122792129] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:29:55,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:29:55,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:29:55,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598475035] [2021-10-08 17:29:55,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:29:55,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:29:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:29:55,291 INFO L87 Difference]: Start difference. First operand 1252 states and 5270 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:55,685 INFO L93 Difference]: Finished difference Result 2292 states and 8906 transitions. [2021-10-08 17:29:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:29:55,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:55,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:55,696 INFO L225 Difference]: With dead ends: 2292 [2021-10-08 17:29:55,696 INFO L226 Difference]: Without dead ends: 2240 [2021-10-08 17:29:55,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-10-08 17:29:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 1074. [2021-10-08 17:29:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 4.071761416589003) internal successors, (4369), 1073 states have internal predecessors, (4369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 4369 transitions. [2021-10-08 17:29:55,768 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 4369 transitions. Word has length 26 [2021-10-08 17:29:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:55,769 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 4369 transitions. [2021-10-08 17:29:55,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 4369 transitions. [2021-10-08 17:29:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:55,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:55,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:55,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:55,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:55,990 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:55,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1352136399, now seen corresponding path program 6 times [2021-10-08 17:29:55,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:55,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410113451] [2021-10-08 17:29:55,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:29:55,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:55,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:55,993 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:55,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:29:56,251 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:29:56,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:56,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:56,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:56,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:56,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:56,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410113451] [2021-10-08 17:29:56,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410113451] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:56,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:56,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-08 17:29:56,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453276566] [2021-10-08 17:29:56,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:29:56,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:29:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:29:56,395 INFO L87 Difference]: Start difference. First operand 1074 states and 4369 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:56,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:56,647 INFO L93 Difference]: Finished difference Result 1256 states and 4872 transitions. [2021-10-08 17:29:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:29:56,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 26 [2021-10-08 17:29:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:56,655 INFO L225 Difference]: With dead ends: 1256 [2021-10-08 17:29:56,655 INFO L226 Difference]: Without dead ends: 1188 [2021-10-08 17:29:56,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:29:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-10-08 17:29:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 976. [2021-10-08 17:29:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 4.137435897435897) internal successors, (4034), 975 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 4034 transitions. [2021-10-08 17:29:56,698 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 4034 transitions. Word has length 26 [2021-10-08 17:29:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:56,700 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 4034 transitions. [2021-10-08 17:29:56,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 4034 transitions. [2021-10-08 17:29:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:56,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:56,707 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:56,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-08 17:29:56,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:56,921 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1415386437, now seen corresponding path program 6 times [2021-10-08 17:29:56,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:56,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435942107] [2021-10-08 17:29:56,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:29:56,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:56,924 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:56,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:29:57,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:29:57,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:57,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:57,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:57,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:57,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:57,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435942107] [2021-10-08 17:29:57,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435942107] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:57,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:57,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:29:57,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814714649] [2021-10-08 17:29:57,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:29:57,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:29:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:29:57,376 INFO L87 Difference]: Start difference. First operand 976 states and 4034 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:57,694 INFO L93 Difference]: Finished difference Result 1488 states and 5883 transitions. [2021-10-08 17:29:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:29:57,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:57,706 INFO L225 Difference]: With dead ends: 1488 [2021-10-08 17:29:57,707 INFO L226 Difference]: Without dead ends: 1394 [2021-10-08 17:29:57,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-10-08 17:29:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 912. [2021-10-08 17:29:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 4.209659714599342) internal successors, (3835), 911 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 3835 transitions. [2021-10-08 17:29:57,749 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 3835 transitions. Word has length 26 [2021-10-08 17:29:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:57,750 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 3835 transitions. [2021-10-08 17:29:57,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 3835 transitions. [2021-10-08 17:29:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:57,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:57,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:57,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:57,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:57,967 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1125870035, now seen corresponding path program 7 times [2021-10-08 17:29:57,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:57,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321060673] [2021-10-08 17:29:57,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:29:57,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:57,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:57,970 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:58,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 17:29:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:29:58,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:29:58,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:58,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:58,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:58,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321060673] [2021-10-08 17:29:58,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321060673] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:29:58,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:29:58,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:29:58,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48055517] [2021-10-08 17:29:58,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:29:58,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:29:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:29:58,344 INFO L87 Difference]: Start difference. First operand 912 states and 3835 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:58,680 INFO L93 Difference]: Finished difference Result 1706 states and 7043 transitions. [2021-10-08 17:29:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:29:58,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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 26 [2021-10-08 17:29:58,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:58,689 INFO L225 Difference]: With dead ends: 1706 [2021-10-08 17:29:58,690 INFO L226 Difference]: Without dead ends: 1702 [2021-10-08 17:29:58,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-10-08 17:29:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1228. [2021-10-08 17:29:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 4.351263243683782) internal successors, (5339), 1227 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 5339 transitions. [2021-10-08 17:29:58,791 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 5339 transitions. Word has length 26 [2021-10-08 17:29:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:29:58,792 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 5339 transitions. [2021-10-08 17:29:58,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 5339 transitions. [2021-10-08 17:29:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:29:58,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:29:58,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:29:58,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 17:29:59,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:29:59,008 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:29:59,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:29:59,009 INFO L82 PathProgramCache]: Analyzing trace with hash 552096707, now seen corresponding path program 8 times [2021-10-08 17:29:59,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:29:59,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497405565] [2021-10-08 17:29:59,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:29:59,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:29:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:29:59,011 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:29:59,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 17:29:59,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:29:59,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:29:59,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:29:59,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:29:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:59,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:29:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:29:59,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:29:59,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497405565] [2021-10-08 17:29:59,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497405565] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:29:59,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:29:59,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:29:59,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265466348] [2021-10-08 17:29:59,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:29:59,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:29:59,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:29:59,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:29:59,565 INFO L87 Difference]: Start difference. First operand 1228 states and 5339 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:29:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:29:59,920 INFO L93 Difference]: Finished difference Result 2578 states and 11106 transitions. [2021-10-08 17:29:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:29:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:29:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:29:59,931 INFO L225 Difference]: With dead ends: 2578 [2021-10-08 17:29:59,931 INFO L226 Difference]: Without dead ends: 2522 [2021-10-08 17:29:59,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:29:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2021-10-08 17:29:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1478. [2021-10-08 17:29:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 4.606635071090047) internal successors, (6804), 1477 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 6804 transitions. [2021-10-08 17:30:00,006 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 6804 transitions. Word has length 26 [2021-10-08 17:30:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:00,006 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 6804 transitions. [2021-10-08 17:30:00,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 6804 transitions. [2021-10-08 17:30:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:30:00,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:00,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:00,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:00,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:00,227 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:00,227 INFO L82 PathProgramCache]: Analyzing trace with hash -981427479, now seen corresponding path program 9 times [2021-10-08 17:30:00,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:00,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321066908] [2021-10-08 17:30:00,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:30:00,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:00,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:00,230 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:00,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 17:30:00,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:30:00,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:00,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:00,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:00,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:00,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:00,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321066908] [2021-10-08 17:30:00,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321066908] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:00,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:00,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:30:00,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875958834] [2021-10-08 17:30:00,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:30:00,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:00,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:30:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:30:00,648 INFO L87 Difference]: Start difference. First operand 1478 states and 6804 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:00,992 INFO L93 Difference]: Finished difference Result 1992 states and 8725 transitions. [2021-10-08 17:30:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:30:00,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:30:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:00,999 INFO L225 Difference]: With dead ends: 1992 [2021-10-08 17:30:00,999 INFO L226 Difference]: Without dead ends: 1906 [2021-10-08 17:30:00,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:30:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-10-08 17:30:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1486. [2021-10-08 17:30:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 4.593265993265994) internal successors, (6821), 1485 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 6821 transitions. [2021-10-08 17:30:01,062 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 6821 transitions. Word has length 26 [2021-10-08 17:30:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:01,063 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 6821 transitions. [2021-10-08 17:30:01,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 6821 transitions. [2021-10-08 17:30:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:30:01,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:01,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:01,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:01,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:01,282 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:01,283 INFO L82 PathProgramCache]: Analyzing trace with hash 535226117, now seen corresponding path program 10 times [2021-10-08 17:30:01,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:01,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468267651] [2021-10-08 17:30:01,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:30:01,284 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:01,286 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:01,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 17:30:01,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:30:01,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:01,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:01,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:01,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:01,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:01,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468267651] [2021-10-08 17:30:01,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468267651] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:01,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:01,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:30:01,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444103829] [2021-10-08 17:30:01,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:30:01,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:30:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:30:01,698 INFO L87 Difference]: Start difference. First operand 1486 states and 6821 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:01,978 INFO L93 Difference]: Finished difference Result 2040 states and 9133 transitions. [2021-10-08 17:30:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:30:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:30:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:01,993 INFO L225 Difference]: With dead ends: 2040 [2021-10-08 17:30:01,993 INFO L226 Difference]: Without dead ends: 2008 [2021-10-08 17:30:01,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:30:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-10-08 17:30:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1456. [2021-10-08 17:30:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 4.615120274914089) internal successors, (6715), 1455 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:02,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 6715 transitions. [2021-10-08 17:30:02,054 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 6715 transitions. Word has length 26 [2021-10-08 17:30:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:02,054 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 6715 transitions. [2021-10-08 17:30:02,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 6715 transitions. [2021-10-08 17:30:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:30:02,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:02,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:02,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:02,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:02,273 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:02,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1764408955, now seen corresponding path program 11 times [2021-10-08 17:30:02,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:02,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972598129] [2021-10-08 17:30:02,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:30:02,275 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:02,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:02,277 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:02,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 17:30:02,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:02,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:02,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:02,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:02,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972598129] [2021-10-08 17:30:02,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972598129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:02,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:02,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-08 17:30:02,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450849757] [2021-10-08 17:30:02,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:30:02,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:02,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:30:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:30:02,661 INFO L87 Difference]: Start difference. First operand 1456 states and 6715 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:02,892 INFO L93 Difference]: Finished difference Result 1612 states and 7304 transitions. [2021-10-08 17:30:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:30:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:30:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:02,900 INFO L225 Difference]: With dead ends: 1612 [2021-10-08 17:30:02,900 INFO L226 Difference]: Without dead ends: 1580 [2021-10-08 17:30:02,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:30:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-10-08 17:30:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1174. [2021-10-08 17:30:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 4.549872122762149) internal successors, (5337), 1173 states have internal predecessors, (5337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 5337 transitions. [2021-10-08 17:30:02,976 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 5337 transitions. Word has length 26 [2021-10-08 17:30:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:02,977 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 5337 transitions. [2021-10-08 17:30:02,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 5337 transitions. [2021-10-08 17:30:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 17:30:02,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:02,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:02,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-08 17:30:03,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:03,197 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:03,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:03,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1600380726, now seen corresponding path program 1 times [2021-10-08 17:30:03,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:03,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928206779] [2021-10-08 17:30:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:30:03,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:03,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:03,200 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:03,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 17:30:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:30:03,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:30:03,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:03,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:03,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:03,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928206779] [2021-10-08 17:30:03,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928206779] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:03,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:03,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-08 17:30:03,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400572450] [2021-10-08 17:30:03,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:30:03,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:03,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:30:03,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:30:03,731 INFO L87 Difference]: Start difference. First operand 1174 states and 5337 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:03,827 INFO L93 Difference]: Finished difference Result 2618 states and 11330 transitions. [2021-10-08 17:30:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:30:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 17:30:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:03,836 INFO L225 Difference]: With dead ends: 2618 [2021-10-08 17:30:03,836 INFO L226 Difference]: Without dead ends: 2484 [2021-10-08 17:30:03,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:30:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-10-08 17:30:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2288. [2021-10-08 17:30:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 2287 states have (on average 4.518583296895496) internal successors, (10334), 2287 states have internal predecessors, (10334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 10334 transitions. [2021-10-08 17:30:03,935 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 10334 transitions. Word has length 27 [2021-10-08 17:30:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:03,935 INFO L470 AbstractCegarLoop]: Abstraction has 2288 states and 10334 transitions. [2021-10-08 17:30:03,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 10334 transitions. [2021-10-08 17:30:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:03,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:03,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:03,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:04,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:04,158 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:04,159 INFO L82 PathProgramCache]: Analyzing trace with hash -735789767, now seen corresponding path program 1 times [2021-10-08 17:30:04,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:04,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380226734] [2021-10-08 17:30:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:30:04,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:04,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:04,161 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:04,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 17:30:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:30:04,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:30:04,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:04,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:04,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:04,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380226734] [2021-10-08 17:30:04,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380226734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:04,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:04,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:30:04,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865855352] [2021-10-08 17:30:04,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:30:04,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:30:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:30:04,828 INFO L87 Difference]: Start difference. First operand 2288 states and 10334 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:05,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:05,348 INFO L93 Difference]: Finished difference Result 3990 states and 17602 transitions. [2021-10-08 17:30:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:30:05,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:05,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:05,362 INFO L225 Difference]: With dead ends: 3990 [2021-10-08 17:30:05,362 INFO L226 Difference]: Without dead ends: 3876 [2021-10-08 17:30:05,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 204.2ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:30:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2021-10-08 17:30:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 2614. [2021-10-08 17:30:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2613 states have (on average 4.503635667814772) internal successors, (11768), 2613 states have internal predecessors, (11768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 11768 transitions. [2021-10-08 17:30:05,476 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 11768 transitions. Word has length 28 [2021-10-08 17:30:05,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:05,477 INFO L470 AbstractCegarLoop]: Abstraction has 2614 states and 11768 transitions. [2021-10-08 17:30:05,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 11768 transitions. [2021-10-08 17:30:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:05,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:05,488 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:05,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:05,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:05,702 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:05,704 INFO L82 PathProgramCache]: Analyzing trace with hash -739859509, now seen corresponding path program 2 times [2021-10-08 17:30:05,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:05,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274955231] [2021-10-08 17:30:05,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:30:05,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:05,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:05,706 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:05,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 17:30:06,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:06,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:06,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:06,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:06,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:06,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:06,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274955231] [2021-10-08 17:30:06,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274955231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:06,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:06,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:30:06,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918459276] [2021-10-08 17:30:06,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:30:06,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:06,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:30:06,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:30:06,202 INFO L87 Difference]: Start difference. First operand 2614 states and 11768 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:06,588 INFO L93 Difference]: Finished difference Result 3820 states and 17085 transitions. [2021-10-08 17:30:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 17:30:06,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:06,602 INFO L225 Difference]: With dead ends: 3820 [2021-10-08 17:30:06,602 INFO L226 Difference]: Without dead ends: 3742 [2021-10-08 17:30:06,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:30:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-10-08 17:30:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3036. [2021-10-08 17:30:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3036 states, 3035 states have (on average 4.617792421746294) internal successors, (14015), 3035 states have internal predecessors, (14015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 14015 transitions. [2021-10-08 17:30:06,701 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 14015 transitions. Word has length 28 [2021-10-08 17:30:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:06,702 INFO L470 AbstractCegarLoop]: Abstraction has 3036 states and 14015 transitions. [2021-10-08 17:30:06,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 14015 transitions. [2021-10-08 17:30:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:06,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:06,714 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:06,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:06,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:06,928 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash 827283181, now seen corresponding path program 2 times [2021-10-08 17:30:06,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:06,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377757036] [2021-10-08 17:30:06,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:30:06,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:06,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:06,932 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:06,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 17:30:07,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:07,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:07,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:30:07,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:07,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:07,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:07,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377757036] [2021-10-08 17:30:07,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377757036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:07,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:07,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:30:07,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239502183] [2021-10-08 17:30:07,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:30:07,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:07,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:30:07,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:30:07,763 INFO L87 Difference]: Start difference. First operand 3036 states and 14015 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:10,287 INFO L93 Difference]: Finished difference Result 8224 states and 36393 transitions. [2021-10-08 17:30:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:30:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:10,318 INFO L225 Difference]: With dead ends: 8224 [2021-10-08 17:30:10,318 INFO L226 Difference]: Without dead ends: 8114 [2021-10-08 17:30:10,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1249.5ms TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 17:30:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8114 states. [2021-10-08 17:30:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8114 to 3284. [2021-10-08 17:30:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 3283 states have (on average 4.733170880292415) internal successors, (15539), 3283 states have internal predecessors, (15539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 15539 transitions. [2021-10-08 17:30:10,608 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 15539 transitions. Word has length 28 [2021-10-08 17:30:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:10,609 INFO L470 AbstractCegarLoop]: Abstraction has 3284 states and 15539 transitions. [2021-10-08 17:30:10,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 15539 transitions. [2021-10-08 17:30:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:10,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:10,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:10,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-08 17:30:10,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:10,824 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1341262973, now seen corresponding path program 3 times [2021-10-08 17:30:10,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:10,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721082976] [2021-10-08 17:30:10,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:30:10,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:10,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:10,827 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:10,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 17:30:11,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:30:11,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:11,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:11,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:11,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:11,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:11,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721082976] [2021-10-08 17:30:11,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721082976] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:11,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:11,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:30:11,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893800592] [2021-10-08 17:30:11,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:30:11,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:30:11,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:30:11,324 INFO L87 Difference]: Start difference. First operand 3284 states and 15539 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:11,360 INFO L93 Difference]: Finished difference Result 3068 states and 14323 transitions. [2021-10-08 17:30:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:30:11,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:11,372 INFO L225 Difference]: With dead ends: 3068 [2021-10-08 17:30:11,372 INFO L226 Difference]: Without dead ends: 3068 [2021-10-08 17:30:11,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:30:11,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-10-08 17:30:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-10-08 17:30:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 4.670035865666775) internal successors, (14323), 3067 states have internal predecessors, (14323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 14323 transitions. [2021-10-08 17:30:11,575 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 14323 transitions. Word has length 28 [2021-10-08 17:30:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:11,576 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 14323 transitions. [2021-10-08 17:30:11,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 14323 transitions. [2021-10-08 17:30:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:11,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:11,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:11,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:11,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:11,804 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash 986529297, now seen corresponding path program 4 times [2021-10-08 17:30:11,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:11,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947580395] [2021-10-08 17:30:11,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:30:11,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:11,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:11,808 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:11,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 17:30:12,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:30:12,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:12,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:30:12,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:12,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:12,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:12,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947580395] [2021-10-08 17:30:12,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947580395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:12,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:12,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:30:12,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833184947] [2021-10-08 17:30:12,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:30:12,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:30:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:30:12,489 INFO L87 Difference]: Start difference. First operand 3068 states and 14323 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:12,882 INFO L93 Difference]: Finished difference Result 5172 states and 24026 transitions. [2021-10-08 17:30:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:30:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:12,902 INFO L225 Difference]: With dead ends: 5172 [2021-10-08 17:30:12,902 INFO L226 Difference]: Without dead ends: 5172 [2021-10-08 17:30:12,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:30:12,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2021-10-08 17:30:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 3032. [2021-10-08 17:30:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 3031 states have (on average 4.637413394919169) internal successors, (14056), 3031 states have internal predecessors, (14056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 14056 transitions. [2021-10-08 17:30:13,043 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 14056 transitions. Word has length 28 [2021-10-08 17:30:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:13,043 INFO L470 AbstractCegarLoop]: Abstraction has 3032 states and 14056 transitions. [2021-10-08 17:30:13,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 14056 transitions. [2021-10-08 17:30:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:13,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:13,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:13,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:13,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:13,253 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:13,254 INFO L82 PathProgramCache]: Analyzing trace with hash 719163591, now seen corresponding path program 5 times [2021-10-08 17:30:13,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:13,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25229135] [2021-10-08 17:30:13,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:30:13,255 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:13,257 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:13,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 17:30:13,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:13,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:13,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:30:13,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:13,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:14,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:14,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25229135] [2021-10-08 17:30:14,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25229135] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:14,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:14,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:30:14,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192058158] [2021-10-08 17:30:14,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:30:14,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:14,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:30:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:30:14,054 INFO L87 Difference]: Start difference. First operand 3032 states and 14056 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:15,187 INFO L93 Difference]: Finished difference Result 5778 states and 25988 transitions. [2021-10-08 17:30:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:30:15,188 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:15,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:15,206 INFO L225 Difference]: With dead ends: 5778 [2021-10-08 17:30:15,206 INFO L226 Difference]: Without dead ends: 5734 [2021-10-08 17:30:15,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 452.6ms TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:30:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-10-08 17:30:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 3240. [2021-10-08 17:30:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3239 states have (on average 4.688175362766286) internal successors, (15185), 3239 states have internal predecessors, (15185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 15185 transitions. [2021-10-08 17:30:15,350 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 15185 transitions. Word has length 28 [2021-10-08 17:30:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:15,350 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 15185 transitions. [2021-10-08 17:30:15,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 15185 transitions. [2021-10-08 17:30:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:15,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:15,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:15,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:15,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:15,560 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:15,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:15,561 INFO L82 PathProgramCache]: Analyzing trace with hash -576835989, now seen corresponding path program 6 times [2021-10-08 17:30:15,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:15,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948778429] [2021-10-08 17:30:15,562 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:30:15,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:15,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:15,563 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:15,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 17:30:15,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:30:15,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:15,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:30:15,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:16,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:16,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:16,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948778429] [2021-10-08 17:30:16,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948778429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:16,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:16,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:30:16,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903924930] [2021-10-08 17:30:16,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:30:16,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:16,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:30:16,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:30:16,422 INFO L87 Difference]: Start difference. First operand 3240 states and 15185 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:18,480 INFO L93 Difference]: Finished difference Result 6776 states and 29604 transitions. [2021-10-08 17:30:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 17:30:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:18,506 INFO L225 Difference]: With dead ends: 6776 [2021-10-08 17:30:18,507 INFO L226 Difference]: Without dead ends: 6676 [2021-10-08 17:30:18,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1002.4ms TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:30:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-10-08 17:30:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 2706. [2021-10-08 17:30:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2705 states have (on average 4.479112754158965) internal successors, (12116), 2705 states have internal predecessors, (12116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 12116 transitions. [2021-10-08 17:30:18,633 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 12116 transitions. Word has length 28 [2021-10-08 17:30:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:18,633 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 12116 transitions. [2021-10-08 17:30:18,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 12116 transitions. [2021-10-08 17:30:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:18,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:18,642 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:18,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-08 17:30:18,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:18,852 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash -98638677, now seen corresponding path program 3 times [2021-10-08 17:30:18,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:18,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998352070] [2021-10-08 17:30:18,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:30:18,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:18,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:18,855 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:18,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 17:30:19,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:30:19,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:19,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:19,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:19,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:19,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:19,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998352070] [2021-10-08 17:30:19,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998352070] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:19,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:19,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-08 17:30:19,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609602725] [2021-10-08 17:30:19,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:30:19,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:30:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:30:19,429 INFO L87 Difference]: Start difference. First operand 2706 states and 12116 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:19,793 INFO L93 Difference]: Finished difference Result 3946 states and 17424 transitions. [2021-10-08 17:30:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:30:19,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:19,806 INFO L225 Difference]: With dead ends: 3946 [2021-10-08 17:30:19,807 INFO L226 Difference]: Without dead ends: 3888 [2021-10-08 17:30:19,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:30:19,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-10-08 17:30:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 2944. [2021-10-08 17:30:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2943 states have (on average 4.524974515800204) internal successors, (13317), 2943 states have internal predecessors, (13317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 13317 transitions. [2021-10-08 17:30:19,888 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 13317 transitions. Word has length 28 [2021-10-08 17:30:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:19,888 INFO L470 AbstractCegarLoop]: Abstraction has 2944 states and 13317 transitions. [2021-10-08 17:30:19,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 13317 transitions. [2021-10-08 17:30:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:19,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:19,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:19,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:20,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:20,097 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:20,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:20,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1468504013, now seen corresponding path program 7 times [2021-10-08 17:30:20,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:20,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726504628] [2021-10-08 17:30:20,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:30:20,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:20,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:20,101 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:20,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 17:30:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:30:20,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:30:20,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:20,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:20,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:20,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726504628] [2021-10-08 17:30:20,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726504628] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:20,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:20,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:30:20,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415510200] [2021-10-08 17:30:20,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:30:20,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:20,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:30:20,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:30:20,728 INFO L87 Difference]: Start difference. First operand 2944 states and 13317 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:21,048 INFO L93 Difference]: Finished difference Result 4512 states and 19428 transitions. [2021-10-08 17:30:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:30:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:21,062 INFO L225 Difference]: With dead ends: 4512 [2021-10-08 17:30:21,062 INFO L226 Difference]: Without dead ends: 4470 [2021-10-08 17:30:21,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:30:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-10-08 17:30:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 2468. [2021-10-08 17:30:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 4.443858937981354) internal successors, (10963), 2467 states have internal predecessors, (10963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 10963 transitions. [2021-10-08 17:30:21,165 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 10963 transitions. Word has length 28 [2021-10-08 17:30:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:21,165 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 10963 transitions. [2021-10-08 17:30:21,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 10963 transitions. [2021-10-08 17:30:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:30:21,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:21,172 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:21,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:21,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:21,373 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:21,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:21,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1315506603, now seen corresponding path program 4 times [2021-10-08 17:30:21,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:21,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941628405] [2021-10-08 17:30:21,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:30:21,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:21,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:21,377 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:21,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 17:30:21,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:30:21,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:21,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:21,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:21,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:21,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:21,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941628405] [2021-10-08 17:30:21,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941628405] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:21,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:21,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-08 17:30:21,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392794037] [2021-10-08 17:30:21,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:30:21,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:30:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:30:21,843 INFO L87 Difference]: Start difference. First operand 2468 states and 10963 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:22,108 INFO L93 Difference]: Finished difference Result 2478 states and 11129 transitions. [2021-10-08 17:30:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:30:22,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:30:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:22,121 INFO L225 Difference]: With dead ends: 2478 [2021-10-08 17:30:22,121 INFO L226 Difference]: Without dead ends: 2418 [2021-10-08 17:30:22,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:30:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-10-08 17:30:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2236. [2021-10-08 17:30:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2235 states have (on average 4.536017897091723) internal successors, (10138), 2235 states have internal predecessors, (10138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 10138 transitions. [2021-10-08 17:30:22,198 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 10138 transitions. Word has length 28 [2021-10-08 17:30:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:22,198 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 10138 transitions. [2021-10-08 17:30:22,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 10138 transitions. [2021-10-08 17:30:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 17:30:22,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:22,205 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:22,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-08 17:30:22,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:22,405 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:22,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:22,406 INFO L82 PathProgramCache]: Analyzing trace with hash -409228855, now seen corresponding path program 1 times [2021-10-08 17:30:22,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:22,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657625978] [2021-10-08 17:30:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:30:22,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:22,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:22,409 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:22,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 17:30:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:30:22,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:30:22,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:22,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:23,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:23,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657625978] [2021-10-08 17:30:23,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657625978] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:23,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:23,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:30:23,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407793840] [2021-10-08 17:30:23,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:30:23,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:30:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:30:23,069 INFO L87 Difference]: Start difference. First operand 2236 states and 10138 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:23,284 INFO L93 Difference]: Finished difference Result 4106 states and 18167 transitions. [2021-10-08 17:30:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:30:23,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 17:30:23,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:23,298 INFO L225 Difference]: With dead ends: 4106 [2021-10-08 17:30:23,298 INFO L226 Difference]: Without dead ends: 3938 [2021-10-08 17:30:23,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:30:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-10-08 17:30:23,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3036. [2021-10-08 17:30:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3036 states, 3035 states have (on average 4.532784184514004) internal successors, (13757), 3035 states have internal predecessors, (13757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 13757 transitions. [2021-10-08 17:30:23,382 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 13757 transitions. Word has length 29 [2021-10-08 17:30:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:23,382 INFO L470 AbstractCegarLoop]: Abstraction has 3036 states and 13757 transitions. [2021-10-08 17:30:23,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:23,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 13757 transitions. [2021-10-08 17:30:23,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 17:30:23,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:23,393 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:23,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:23,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:23,606 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:23,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:23,607 INFO L82 PathProgramCache]: Analyzing trace with hash 997539979, now seen corresponding path program 1 times [2021-10-08 17:30:23,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:23,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749045954] [2021-10-08 17:30:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:30:23,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:23,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:23,610 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:23,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 17:30:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:30:23,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:30:23,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:30:24,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:30:24,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:24,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749045954] [2021-10-08 17:30:24,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749045954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:30:24,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:30:24,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:30:24,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698831274] [2021-10-08 17:30:24,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:30:24,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:30:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:30:24,109 INFO L87 Difference]: Start difference. First operand 3036 states and 13757 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:24,137 INFO L93 Difference]: Finished difference Result 3010 states and 13418 transitions. [2021-10-08 17:30:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:30:24,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 17:30:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:24,148 INFO L225 Difference]: With dead ends: 3010 [2021-10-08 17:30:24,148 INFO L226 Difference]: Without dead ends: 2974 [2021-10-08 17:30:24,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:30:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-10-08 17:30:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2800. [2021-10-08 17:30:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 2799 states have (on average 4.505894962486602) internal successors, (12612), 2799 states have internal predecessors, (12612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 12612 transitions. [2021-10-08 17:30:24,310 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 12612 transitions. Word has length 29 [2021-10-08 17:30:24,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:24,310 INFO L470 AbstractCegarLoop]: Abstraction has 2800 states and 12612 transitions. [2021-10-08 17:30:24,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 12612 transitions. [2021-10-08 17:30:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:24,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:24,322 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:24,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:24,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:24,537 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:24,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash 712031318, now seen corresponding path program 2 times [2021-10-08 17:30:24,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:24,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286638087] [2021-10-08 17:30:24,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:30:24,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:24,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:24,540 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:24,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 17:30:25,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:25,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:25,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:30:25,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:25,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:25,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286638087] [2021-10-08 17:30:25,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286638087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:25,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:25,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:30:25,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13471294] [2021-10-08 17:30:25,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:30:25,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:25,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:30:25,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:30:25,475 INFO L87 Difference]: Start difference. First operand 2800 states and 12612 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:26,115 INFO L93 Difference]: Finished difference Result 4300 states and 18630 transitions. [2021-10-08 17:30:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:30:26,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:26,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:26,135 INFO L225 Difference]: With dead ends: 4300 [2021-10-08 17:30:26,135 INFO L226 Difference]: Without dead ends: 4204 [2021-10-08 17:30:26,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 257.8ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:30:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-10-08 17:30:26,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 2868. [2021-10-08 17:30:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2867 states have (on average 4.468782699686083) internal successors, (12812), 2867 states have internal predecessors, (12812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 12812 transitions. [2021-10-08 17:30:26,257 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 12812 transitions. Word has length 30 [2021-10-08 17:30:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:26,257 INFO L470 AbstractCegarLoop]: Abstraction has 2868 states and 12812 transitions. [2021-10-08 17:30:26,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 12812 transitions. [2021-10-08 17:30:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:26,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:26,269 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:26,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:26,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:26,485 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:26,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2009228128, now seen corresponding path program 3 times [2021-10-08 17:30:26,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:26,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726086731] [2021-10-08 17:30:26,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:30:26,487 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:26,488 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:26,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 17:30:26,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:30:26,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:26,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:30:26,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:27,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:27,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:27,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726086731] [2021-10-08 17:30:27,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726086731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:27,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:27,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 17:30:27,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792836217] [2021-10-08 17:30:27,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:30:27,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:27,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:30:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:30:27,157 INFO L87 Difference]: Start difference. First operand 2868 states and 12812 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:27,223 INFO L93 Difference]: Finished difference Result 4276 states and 18801 transitions. [2021-10-08 17:30:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:30:27,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:27,237 INFO L225 Difference]: With dead ends: 4276 [2021-10-08 17:30:27,237 INFO L226 Difference]: Without dead ends: 4172 [2021-10-08 17:30:27,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:30:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-10-08 17:30:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3586. [2021-10-08 17:30:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 4.549232914923292) internal successors, (16309), 3585 states have internal predecessors, (16309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 16309 transitions. [2021-10-08 17:30:27,410 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 16309 transitions. Word has length 30 [2021-10-08 17:30:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:27,410 INFO L470 AbstractCegarLoop]: Abstraction has 3586 states and 16309 transitions. [2021-10-08 17:30:27,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 16309 transitions. [2021-10-08 17:30:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:27,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:27,429 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:27,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:27,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:27,643 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:27,643 INFO L82 PathProgramCache]: Analyzing trace with hash 212276769, now seen corresponding path program 4 times [2021-10-08 17:30:27,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:27,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070917203] [2021-10-08 17:30:27,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:30:27,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:27,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:27,646 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:27,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 17:30:28,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:30:28,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:28,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:30:28,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:28,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:28,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:28,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070917203] [2021-10-08 17:30:28,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070917203] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:28,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:28,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 17:30:28,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296435717] [2021-10-08 17:30:28,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:30:28,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:30:28,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:30:28,191 INFO L87 Difference]: Start difference. First operand 3586 states and 16309 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:28,257 INFO L93 Difference]: Finished difference Result 4794 states and 21309 transitions. [2021-10-08 17:30:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:30:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:28,273 INFO L225 Difference]: With dead ends: 4794 [2021-10-08 17:30:28,273 INFO L226 Difference]: Without dead ends: 4578 [2021-10-08 17:30:28,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:30:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2021-10-08 17:30:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3898. [2021-10-08 17:30:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 3897 states have (on average 4.590454195535027) internal successors, (17889), 3897 states have internal predecessors, (17889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 17889 transitions. [2021-10-08 17:30:28,378 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 17889 transitions. Word has length 30 [2021-10-08 17:30:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:28,380 INFO L470 AbstractCegarLoop]: Abstraction has 3898 states and 17889 transitions. [2021-10-08 17:30:28,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 17889 transitions. [2021-10-08 17:30:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:28,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:28,391 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:28,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:28,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:28,591 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:28,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:28,592 INFO L82 PathProgramCache]: Analyzing trace with hash 430529118, now seen corresponding path program 5 times [2021-10-08 17:30:28,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:28,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436805179] [2021-10-08 17:30:28,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:30:28,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:28,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:28,595 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:28,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 17:30:28,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:28,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:30:28,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:29,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:30:29,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:29,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436805179] [2021-10-08 17:30:29,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436805179] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:29,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:29,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:30:29,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098645896] [2021-10-08 17:30:29,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:30:29,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:30:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:30:29,497 INFO L87 Difference]: Start difference. First operand 3898 states and 17889 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:30,736 INFO L93 Difference]: Finished difference Result 9492 states and 42559 transitions. [2021-10-08 17:30:30,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:30:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:30,769 INFO L225 Difference]: With dead ends: 9492 [2021-10-08 17:30:30,769 INFO L226 Difference]: Without dead ends: 9492 [2021-10-08 17:30:30,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 691.8ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:30:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2021-10-08 17:30:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 4262. [2021-10-08 17:30:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 4.596338887585074) internal successors, (19585), 4261 states have internal predecessors, (19585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 19585 transitions. [2021-10-08 17:30:30,937 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 19585 transitions. Word has length 30 [2021-10-08 17:30:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:30,937 INFO L470 AbstractCegarLoop]: Abstraction has 4262 states and 19585 transitions. [2021-10-08 17:30:30,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 19585 transitions. [2021-10-08 17:30:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:30,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:30,951 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:30,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-08 17:30:31,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:31,165 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash 562151198, now seen corresponding path program 6 times [2021-10-08 17:30:31,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:31,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257999275] [2021-10-08 17:30:31,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:30:31,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:31,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:31,168 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:31,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 17:30:31,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:30:31,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:30:31,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:31,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:32,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:32,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257999275] [2021-10-08 17:30:32,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257999275] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:32,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:32,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-08 17:30:32,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716248245] [2021-10-08 17:30:32,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:30:32,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:30:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:30:32,400 INFO L87 Difference]: Start difference. First operand 4262 states and 19585 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:33,420 INFO L93 Difference]: Finished difference Result 10566 states and 47552 transitions. [2021-10-08 17:30:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:30:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:33,459 INFO L225 Difference]: With dead ends: 10566 [2021-10-08 17:30:33,459 INFO L226 Difference]: Without dead ends: 10566 [2021-10-08 17:30:33,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 679.7ms TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:30:33,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2021-10-08 17:30:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 4820. [2021-10-08 17:30:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4819 states have (on average 4.553434322473542) internal successors, (21943), 4819 states have internal predecessors, (21943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 21943 transitions. [2021-10-08 17:30:33,649 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 21943 transitions. Word has length 30 [2021-10-08 17:30:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:33,649 INFO L470 AbstractCegarLoop]: Abstraction has 4820 states and 21943 transitions. [2021-10-08 17:30:33,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 21943 transitions. [2021-10-08 17:30:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:33,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:33,660 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:33,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:33,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:33,861 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash -978169866, now seen corresponding path program 7 times [2021-10-08 17:30:33,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:33,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404339054] [2021-10-08 17:30:33,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:30:33,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:33,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:33,864 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:33,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 17:30:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:30:34,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:30:34,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:34,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:34,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:34,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404339054] [2021-10-08 17:30:34,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404339054] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:34,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:34,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-10-08 17:30:34,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846473747] [2021-10-08 17:30:34,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:30:34,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:30:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:30:34,781 INFO L87 Difference]: Start difference. First operand 4820 states and 21943 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:36,203 INFO L93 Difference]: Finished difference Result 10362 states and 44867 transitions. [2021-10-08 17:30:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:30:36,204 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:36,238 INFO L225 Difference]: With dead ends: 10362 [2021-10-08 17:30:36,238 INFO L226 Difference]: Without dead ends: 9902 [2021-10-08 17:30:36,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 647.1ms TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:30:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2021-10-08 17:30:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 4938. [2021-10-08 17:30:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 4.519343731010736) internal successors, (22312), 4937 states have internal predecessors, (22312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 22312 transitions. [2021-10-08 17:30:36,418 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 22312 transitions. Word has length 30 [2021-10-08 17:30:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:36,418 INFO L470 AbstractCegarLoop]: Abstraction has 4938 states and 22312 transitions. [2021-10-08 17:30:36,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 22312 transitions. [2021-10-08 17:30:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:36,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:36,430 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:36,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-10-08 17:30:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:36,630 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash 991606772, now seen corresponding path program 8 times [2021-10-08 17:30:36,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:36,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20019388] [2021-10-08 17:30:36,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:30:36,632 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:36,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:36,634 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:36,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 17:30:37,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:37,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:37,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:30:37,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:37,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:37,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:37,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20019388] [2021-10-08 17:30:37,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20019388] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:37,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:37,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:30:37,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297302159] [2021-10-08 17:30:37,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:30:37,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:30:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:30:37,958 INFO L87 Difference]: Start difference. First operand 4938 states and 22312 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:40,033 INFO L93 Difference]: Finished difference Result 10300 states and 42978 transitions. [2021-10-08 17:30:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:30:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:40,071 INFO L225 Difference]: With dead ends: 10300 [2021-10-08 17:30:40,071 INFO L226 Difference]: Without dead ends: 10126 [2021-10-08 17:30:40,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1567.6ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:30:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10126 states. [2021-10-08 17:30:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10126 to 5840. [2021-10-08 17:30:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5839 states have (on average 4.511046412056859) internal successors, (26340), 5839 states have internal predecessors, (26340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 26340 transitions. [2021-10-08 17:30:40,272 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 26340 transitions. Word has length 30 [2021-10-08 17:30:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:40,272 INFO L470 AbstractCegarLoop]: Abstraction has 5840 states and 26340 transitions. [2021-10-08 17:30:40,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 26340 transitions. [2021-10-08 17:30:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:40,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:40,287 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:40,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-08 17:30:40,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:40,488 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:40,489 INFO L82 PathProgramCache]: Analyzing trace with hash -687712672, now seen corresponding path program 9 times [2021-10-08 17:30:40,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:40,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769745461] [2021-10-08 17:30:40,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:30:40,491 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:40,492 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:40,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 17:30:41,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:30:41,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:41,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:30:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:41,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:41,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:41,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769745461] [2021-10-08 17:30:41,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769745461] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:41,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:41,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-08 17:30:41,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818054634] [2021-10-08 17:30:41,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:30:41,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:41,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:30:41,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:30:41,917 INFO L87 Difference]: Start difference. First operand 5840 states and 26340 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:43,918 INFO L93 Difference]: Finished difference Result 7656 states and 33502 transitions. [2021-10-08 17:30:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 17:30:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:43,945 INFO L225 Difference]: With dead ends: 7656 [2021-10-08 17:30:43,946 INFO L226 Difference]: Without dead ends: 7596 [2021-10-08 17:30:43,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1378.2ms TimeCoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 17:30:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-10-08 17:30:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6318. [2021-10-08 17:30:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 6317 states have (on average 4.515117935728985) internal successors, (28522), 6317 states have internal predecessors, (28522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 28522 transitions. [2021-10-08 17:30:44,142 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 28522 transitions. Word has length 30 [2021-10-08 17:30:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:44,142 INFO L470 AbstractCegarLoop]: Abstraction has 6318 states and 28522 transitions. [2021-10-08 17:30:44,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 28522 transitions. [2021-10-08 17:30:44,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:44,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:44,158 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:44,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:44,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:44,372 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1187085044, now seen corresponding path program 10 times [2021-10-08 17:30:44,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:44,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527719616] [2021-10-08 17:30:44,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:30:44,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:44,375 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:44,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 17:30:44,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:30:44,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:44,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:30:44,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:45,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:45,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:45,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527719616] [2021-10-08 17:30:45,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527719616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:45,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:45,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:30:45,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54220463] [2021-10-08 17:30:45,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:30:45,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:45,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:30:45,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:30:45,293 INFO L87 Difference]: Start difference. First operand 6318 states and 28522 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:46,129 INFO L93 Difference]: Finished difference Result 8384 states and 36434 transitions. [2021-10-08 17:30:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:30:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:46,158 INFO L225 Difference]: With dead ends: 8384 [2021-10-08 17:30:46,158 INFO L226 Difference]: Without dead ends: 8178 [2021-10-08 17:30:46,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 355.4ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:30:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2021-10-08 17:30:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 7008. [2021-10-08 17:30:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 4.54160125588697) internal successors, (31823), 7007 states have internal predecessors, (31823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 31823 transitions. [2021-10-08 17:30:46,441 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 31823 transitions. Word has length 30 [2021-10-08 17:30:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:46,441 INFO L470 AbstractCegarLoop]: Abstraction has 7008 states and 31823 transitions. [2021-10-08 17:30:46,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 31823 transitions. [2021-10-08 17:30:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:46,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:46,460 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:46,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:46,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:46,661 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:46,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:46,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1741221654, now seen corresponding path program 11 times [2021-10-08 17:30:46,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:46,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235671521] [2021-10-08 17:30:46,663 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:30:46,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:46,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:46,664 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:46,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 17:30:47,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:47,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:47,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:30:47,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:47,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:47,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:47,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235671521] [2021-10-08 17:30:47,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235671521] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:47,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:47,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:30:47,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549017573] [2021-10-08 17:30:47,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:30:47,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:30:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:30:47,511 INFO L87 Difference]: Start difference. First operand 7008 states and 31823 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:48,549 INFO L93 Difference]: Finished difference Result 13382 states and 58306 transitions. [2021-10-08 17:30:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:30:48,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:48,712 INFO L225 Difference]: With dead ends: 13382 [2021-10-08 17:30:48,713 INFO L226 Difference]: Without dead ends: 13054 [2021-10-08 17:30:48,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 389.9ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:30:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13054 states. [2021-10-08 17:30:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13054 to 7918. [2021-10-08 17:30:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7918 states, 7917 states have (on average 4.6021220159151195) internal successors, (36435), 7917 states have internal predecessors, (36435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 36435 transitions. [2021-10-08 17:30:49,139 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 36435 transitions. Word has length 30 [2021-10-08 17:30:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:49,139 INFO L470 AbstractCegarLoop]: Abstraction has 7918 states and 36435 transitions. [2021-10-08 17:30:49,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 36435 transitions. [2021-10-08 17:30:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:49,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:49,167 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:49,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:49,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:49,381 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:49,382 INFO L82 PathProgramCache]: Analyzing trace with hash 177026840, now seen corresponding path program 12 times [2021-10-08 17:30:49,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:49,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663591585] [2021-10-08 17:30:49,383 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:30:49,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:49,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:49,385 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:30:49,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 17:30:49,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:30:49,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:49,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:30:49,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:50,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:50,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:50,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663591585] [2021-10-08 17:30:50,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663591585] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:50,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:50,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:30:50,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133918428] [2021-10-08 17:30:50,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:30:50,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:30:50,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:30:50,616 INFO L87 Difference]: Start difference. First operand 7918 states and 36435 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:51,544 INFO L93 Difference]: Finished difference Result 13504 states and 60205 transitions. [2021-10-08 17:30:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:30:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:51,595 INFO L225 Difference]: With dead ends: 13504 [2021-10-08 17:30:51,596 INFO L226 Difference]: Without dead ends: 13186 [2021-10-08 17:30:51,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 428.0ms TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:30:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13186 states. [2021-10-08 17:30:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13186 to 8362. [2021-10-08 17:30:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8362 states, 8361 states have (on average 4.704102380098075) internal successors, (39331), 8361 states have internal predecessors, (39331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8362 states to 8362 states and 39331 transitions. [2021-10-08 17:30:52,008 INFO L78 Accepts]: Start accepts. Automaton has 8362 states and 39331 transitions. Word has length 30 [2021-10-08 17:30:52,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:52,009 INFO L470 AbstractCegarLoop]: Abstraction has 8362 states and 39331 transitions. [2021-10-08 17:30:52,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8362 states and 39331 transitions. [2021-10-08 17:30:52,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:52,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:52,125 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:52,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 17:30:52,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:30:52,335 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash 684103122, now seen corresponding path program 13 times [2021-10-08 17:30:52,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:52,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962049161] [2021-10-08 17:30:52,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:30:52,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:52,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:52,338 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) [2021-10-08 17:30:52,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 17:30:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:30:52,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:30:52,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:53,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:30:53,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:53,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962049161] [2021-10-08 17:30:53,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962049161] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:53,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:53,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-10-08 17:30:53,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021497376] [2021-10-08 17:30:53,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:30:53,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:53,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:30:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:30:53,307 INFO L87 Difference]: Start difference. First operand 8362 states and 39331 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:30:56,158 INFO L93 Difference]: Finished difference Result 19762 states and 88076 transitions. [2021-10-08 17:30:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 17:30:56,159 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:30:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:30:56,236 INFO L225 Difference]: With dead ends: 19762 [2021-10-08 17:30:56,236 INFO L226 Difference]: Without dead ends: 19480 [2021-10-08 17:30:56,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1603.9ms TimeCoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:30:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19480 states. [2021-10-08 17:30:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19480 to 8648. [2021-10-08 17:30:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8648 states, 8647 states have (on average 4.728229443737712) internal successors, (40885), 8647 states have internal predecessors, (40885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8648 states to 8648 states and 40885 transitions. [2021-10-08 17:30:56,830 INFO L78 Accepts]: Start accepts. Automaton has 8648 states and 40885 transitions. Word has length 30 [2021-10-08 17:30:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:30:56,830 INFO L470 AbstractCegarLoop]: Abstraction has 8648 states and 40885 transitions. [2021-10-08 17:30:56,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:30:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8648 states and 40885 transitions. [2021-10-08 17:30:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:30:56,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:30:56,858 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:30:56,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-08 17:30:57,062 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 [2021-10-08 17:30:57,063 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:30:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:30:57,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1868357156, now seen corresponding path program 14 times [2021-10-08 17:30:57,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:30:57,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742233009] [2021-10-08 17:30:57,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:30:57,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:30:57,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:30:57,067 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) [2021-10-08 17:30:57,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 17:30:57,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:30:57,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:30:57,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:30:57,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:30:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:58,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:30:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:30:58,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:30:58,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742233009] [2021-10-08 17:30:58,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742233009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:30:58,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:30:58,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:30:58,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069052287] [2021-10-08 17:30:58,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:30:58,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:30:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:30:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:30:58,512 INFO L87 Difference]: Start difference. First operand 8648 states and 40885 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:00,615 INFO L93 Difference]: Finished difference Result 17622 states and 79419 transitions. [2021-10-08 17:31:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:31:00,616 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:00,690 INFO L225 Difference]: With dead ends: 17622 [2021-10-08 17:31:00,690 INFO L226 Difference]: Without dead ends: 17358 [2021-10-08 17:31:00,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1350.5ms TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:31:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17358 states. [2021-10-08 17:31:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17358 to 9852. [2021-10-08 17:31:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9852 states, 9851 states have (on average 4.854938584915237) internal successors, (47826), 9851 states have internal predecessors, (47826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9852 states to 9852 states and 47826 transitions. [2021-10-08 17:31:01,211 INFO L78 Accepts]: Start accepts. Automaton has 9852 states and 47826 transitions. Word has length 30 [2021-10-08 17:31:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:01,211 INFO L470 AbstractCegarLoop]: Abstraction has 9852 states and 47826 transitions. [2021-10-08 17:31:01,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9852 states and 47826 transitions. [2021-10-08 17:31:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:01,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:01,239 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:01,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:01,440 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 [2021-10-08 17:31:01,440 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:01,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1708450698, now seen corresponding path program 15 times [2021-10-08 17:31:01,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:01,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627814724] [2021-10-08 17:31:01,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:31:01,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:01,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:01,444 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) [2021-10-08 17:31:01,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 17:31:02,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:31:02,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:02,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:31:02,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:02,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:02,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:02,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627814724] [2021-10-08 17:31:02,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627814724] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:02,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:02,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:31:02,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326692256] [2021-10-08 17:31:02,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:31:02,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:02,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:31:02,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:31:02,496 INFO L87 Difference]: Start difference. First operand 9852 states and 47826 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:03,289 INFO L93 Difference]: Finished difference Result 14086 states and 63476 transitions. [2021-10-08 17:31:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 17:31:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:03,341 INFO L225 Difference]: With dead ends: 14086 [2021-10-08 17:31:03,341 INFO L226 Difference]: Without dead ends: 13988 [2021-10-08 17:31:03,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 216.0ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:31:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13988 states. [2021-10-08 17:31:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13988 to 9910. [2021-10-08 17:31:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9909 states have (on average 4.764052881219094) internal successors, (47207), 9909 states have internal predecessors, (47207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 47207 transitions. [2021-10-08 17:31:03,796 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 47207 transitions. Word has length 30 [2021-10-08 17:31:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:03,796 INFO L470 AbstractCegarLoop]: Abstraction has 9910 states and 47207 transitions. [2021-10-08 17:31:03,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 47207 transitions. [2021-10-08 17:31:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:03,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:03,828 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:03,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:04,028 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 [2021-10-08 17:31:04,029 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:04,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:04,030 INFO L82 PathProgramCache]: Analyzing trace with hash -413419254, now seen corresponding path program 16 times [2021-10-08 17:31:04,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:04,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999547799] [2021-10-08 17:31:04,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:31:04,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:04,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:04,032 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) [2021-10-08 17:31:04,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 17:31:04,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:31:04,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:04,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:31:04,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:31:04,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:31:05,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:05,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999547799] [2021-10-08 17:31:05,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999547799] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:05,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:05,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:31:05,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878324185] [2021-10-08 17:31:05,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:31:05,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:31:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:31:05,132 INFO L87 Difference]: Start difference. First operand 9910 states and 47207 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:06,584 INFO L93 Difference]: Finished difference Result 12454 states and 57077 transitions. [2021-10-08 17:31:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:31:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:06,635 INFO L225 Difference]: With dead ends: 12454 [2021-10-08 17:31:06,635 INFO L226 Difference]: Without dead ends: 12220 [2021-10-08 17:31:06,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 531.4ms TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:31:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12220 states. [2021-10-08 17:31:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12220 to 10780. [2021-10-08 17:31:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10780 states, 10779 states have (on average 4.78161239447073) internal successors, (51541), 10779 states have internal predecessors, (51541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10780 states to 10780 states and 51541 transitions. [2021-10-08 17:31:07,049 INFO L78 Accepts]: Start accepts. Automaton has 10780 states and 51541 transitions. Word has length 30 [2021-10-08 17:31:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:07,049 INFO L470 AbstractCegarLoop]: Abstraction has 10780 states and 51541 transitions. [2021-10-08 17:31:07,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 10780 states and 51541 transitions. [2021-10-08 17:31:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:07,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:07,076 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:07,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:07,281 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 [2021-10-08 17:31:07,282 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:07,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1390793648, now seen corresponding path program 17 times [2021-10-08 17:31:07,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:07,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323271483] [2021-10-08 17:31:07,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:31:07,284 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:07,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:07,285 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) [2021-10-08 17:31:07,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 17:31:07,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:31:07,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:07,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:31:07,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:31:08,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:31:08,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:08,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323271483] [2021-10-08 17:31:08,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323271483] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:08,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:08,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:31:08,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182930771] [2021-10-08 17:31:08,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:31:08,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:31:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:31:08,383 INFO L87 Difference]: Start difference. First operand 10780 states and 51541 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:09,884 INFO L93 Difference]: Finished difference Result 17842 states and 83521 transitions. [2021-10-08 17:31:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:31:09,885 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:10,001 INFO L225 Difference]: With dead ends: 17842 [2021-10-08 17:31:10,001 INFO L226 Difference]: Without dead ends: 17662 [2021-10-08 17:31:10,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 550.9ms TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:31:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17662 states. [2021-10-08 17:31:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17662 to 13380. [2021-10-08 17:31:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13380 states, 13379 states have (on average 4.891322221391733) internal successors, (65441), 13379 states have internal predecessors, (65441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13380 states to 13380 states and 65441 transitions. [2021-10-08 17:31:10,652 INFO L78 Accepts]: Start accepts. Automaton has 13380 states and 65441 transitions. Word has length 30 [2021-10-08 17:31:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:10,653 INFO L470 AbstractCegarLoop]: Abstraction has 13380 states and 65441 transitions. [2021-10-08 17:31:10,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13380 states and 65441 transitions. [2021-10-08 17:31:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:10,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:10,700 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:10,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:10,900 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 [2021-10-08 17:31:10,901 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:10,902 INFO L82 PathProgramCache]: Analyzing trace with hash -433126248, now seen corresponding path program 18 times [2021-10-08 17:31:10,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:10,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666431234] [2021-10-08 17:31:10,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:31:10,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:10,905 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) [2021-10-08 17:31:10,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 17:31:11,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:31:11,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:11,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:31:11,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:12,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:12,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:12,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666431234] [2021-10-08 17:31:12,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666431234] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:12,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:12,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-08 17:31:12,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801097888] [2021-10-08 17:31:12,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:31:12,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:31:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:31:12,429 INFO L87 Difference]: Start difference. First operand 13380 states and 65441 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:14,526 INFO L93 Difference]: Finished difference Result 18276 states and 86556 transitions. [2021-10-08 17:31:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 17:31:14,527 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:14,612 INFO L225 Difference]: With dead ends: 18276 [2021-10-08 17:31:14,612 INFO L226 Difference]: Without dead ends: 18026 [2021-10-08 17:31:14,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1198.9ms TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:31:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18026 states. [2021-10-08 17:31:15,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18026 to 14256. [2021-10-08 17:31:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14256 states, 14255 states have (on average 4.954051210101719) internal successors, (70620), 14255 states have internal predecessors, (70620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 70620 transitions. [2021-10-08 17:31:15,184 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 70620 transitions. Word has length 30 [2021-10-08 17:31:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:15,184 INFO L470 AbstractCegarLoop]: Abstraction has 14256 states and 70620 transitions. [2021-10-08 17:31:15,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 70620 transitions. [2021-10-08 17:31:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:15,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:15,385 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:15,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:15,585 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 [2021-10-08 17:31:15,586 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:15,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1140578926, now seen corresponding path program 19 times [2021-10-08 17:31:15,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:15,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331436027] [2021-10-08 17:31:15,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:31:15,588 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:15,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:15,589 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) [2021-10-08 17:31:15,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 17:31:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:31:16,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:31:16,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:16,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:16,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:16,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331436027] [2021-10-08 17:31:16,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331436027] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:16,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:16,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-10-08 17:31:16,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810713957] [2021-10-08 17:31:16,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:31:16,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:16,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:31:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:31:16,790 INFO L87 Difference]: Start difference. First operand 14256 states and 70620 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:19,943 INFO L93 Difference]: Finished difference Result 18282 states and 86537 transitions. [2021-10-08 17:31:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:31:19,944 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:19,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:20,032 INFO L225 Difference]: With dead ends: 18282 [2021-10-08 17:31:20,032 INFO L226 Difference]: Without dead ends: 18194 [2021-10-08 17:31:20,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1526.3ms TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 17:31:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18194 states. [2021-10-08 17:31:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18194 to 15098. [2021-10-08 17:31:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15098 states, 15097 states have (on average 4.965357355766046) internal successors, (74962), 15097 states have internal predecessors, (74962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15098 states to 15098 states and 74962 transitions. [2021-10-08 17:31:20,764 INFO L78 Accepts]: Start accepts. Automaton has 15098 states and 74962 transitions. Word has length 30 [2021-10-08 17:31:20,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:20,764 INFO L470 AbstractCegarLoop]: Abstraction has 15098 states and 74962 transitions. [2021-10-08 17:31:20,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 15098 states and 74962 transitions. [2021-10-08 17:31:20,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:20,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:20,805 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:20,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:21,006 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 [2021-10-08 17:31:21,006 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:21,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1835074658, now seen corresponding path program 20 times [2021-10-08 17:31:21,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:21,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153684680] [2021-10-08 17:31:21,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:31:21,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:21,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:21,010 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) [2021-10-08 17:31:21,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 17:31:21,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:31:21,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:21,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:31:21,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:31:21,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:31:22,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:22,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153684680] [2021-10-08 17:31:22,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153684680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:22,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:22,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-08 17:31:22,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478910622] [2021-10-08 17:31:22,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:31:22,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:22,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:31:22,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:31:22,251 INFO L87 Difference]: Start difference. First operand 15098 states and 74962 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:24,427 INFO L93 Difference]: Finished difference Result 27746 states and 131227 transitions. [2021-10-08 17:31:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:31:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:24,805 INFO L225 Difference]: With dead ends: 27746 [2021-10-08 17:31:24,806 INFO L226 Difference]: Without dead ends: 27532 [2021-10-08 17:31:24,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1269.6ms TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 17:31:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27532 states. [2021-10-08 17:31:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27532 to 16956. [2021-10-08 17:31:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16956 states, 16955 states have (on average 5.125154821586553) internal successors, (86897), 16955 states have internal predecessors, (86897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16956 states to 16956 states and 86897 transitions. [2021-10-08 17:31:25,727 INFO L78 Accepts]: Start accepts. Automaton has 16956 states and 86897 transitions. Word has length 30 [2021-10-08 17:31:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:25,727 INFO L470 AbstractCegarLoop]: Abstraction has 16956 states and 86897 transitions. [2021-10-08 17:31:25,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 16956 states and 86897 transitions. [2021-10-08 17:31:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:25,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:25,774 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:25,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:25,974 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 [2021-10-08 17:31:25,975 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:25,976 INFO L82 PathProgramCache]: Analyzing trace with hash 196661168, now seen corresponding path program 21 times [2021-10-08 17:31:25,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:25,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285686982] [2021-10-08 17:31:25,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:31:25,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:25,978 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) [2021-10-08 17:31:25,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 17:31:26,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:31:26,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:26,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:31:26,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:31:26,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:27,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:27,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285686982] [2021-10-08 17:31:27,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285686982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:27,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:27,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-08 17:31:27,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467584514] [2021-10-08 17:31:27,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:31:27,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:31:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:31:27,395 INFO L87 Difference]: Start difference. First operand 16956 states and 86897 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:31,461 INFO L93 Difference]: Finished difference Result 25680 states and 125306 transitions. [2021-10-08 17:31:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 17:31:31,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:31,605 INFO L225 Difference]: With dead ends: 25680 [2021-10-08 17:31:31,606 INFO L226 Difference]: Without dead ends: 25386 [2021-10-08 17:31:31,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2117.0ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:31:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25386 states. [2021-10-08 17:31:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25386 to 18454. [2021-10-08 17:31:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18454 states, 18453 states have (on average 5.189725247927166) internal successors, (95766), 18453 states have internal predecessors, (95766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 95766 transitions. [2021-10-08 17:31:32,594 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 95766 transitions. Word has length 30 [2021-10-08 17:31:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:32,595 INFO L470 AbstractCegarLoop]: Abstraction has 18454 states and 95766 transitions. [2021-10-08 17:31:32,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 95766 transitions. [2021-10-08 17:31:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:32,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:32,649 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:32,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-08 17:31:32,849 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 [2021-10-08 17:31:32,849 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:32,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:32,850 INFO L82 PathProgramCache]: Analyzing trace with hash -83388008, now seen corresponding path program 22 times [2021-10-08 17:31:32,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:32,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626405781] [2021-10-08 17:31:32,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:31:32,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:32,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:32,853 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) [2021-10-08 17:31:32,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 17:31:33,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:31:33,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:33,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:31:33,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:31:33,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:31:34,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:34,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626405781] [2021-10-08 17:31:34,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626405781] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:34,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:34,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:31:34,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957941319] [2021-10-08 17:31:34,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:31:34,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:31:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:31:34,422 INFO L87 Difference]: Start difference. First operand 18454 states and 95766 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:36,485 INFO L93 Difference]: Finished difference Result 30446 states and 144662 transitions. [2021-10-08 17:31:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:31:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:36,622 INFO L225 Difference]: With dead ends: 30446 [2021-10-08 17:31:36,623 INFO L226 Difference]: Without dead ends: 30080 [2021-10-08 17:31:36,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1088.8ms TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:31:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30080 states. [2021-10-08 17:31:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30080 to 20676. [2021-10-08 17:31:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20676 states, 20675 states have (on average 5.1772188633615475) internal successors, (107039), 20675 states have internal predecessors, (107039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20676 states to 20676 states and 107039 transitions. [2021-10-08 17:31:37,917 INFO L78 Accepts]: Start accepts. Automaton has 20676 states and 107039 transitions. Word has length 30 [2021-10-08 17:31:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:37,918 INFO L470 AbstractCegarLoop]: Abstraction has 20676 states and 107039 transitions. [2021-10-08 17:31:37,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20676 states and 107039 transitions. [2021-10-08 17:31:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:38,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:38,010 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:38,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:38,224 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 [2021-10-08 17:31:38,225 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:38,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:38,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1681914640, now seen corresponding path program 23 times [2021-10-08 17:31:38,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:38,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299348105] [2021-10-08 17:31:38,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:31:38,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:38,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:38,229 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) [2021-10-08 17:31:38,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 17:31:38,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:31:38,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:38,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:31:38,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:39,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:31:39,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:39,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299348105] [2021-10-08 17:31:39,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299348105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:39,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:39,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:31:39,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878574879] [2021-10-08 17:31:39,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:31:39,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:31:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:31:39,426 INFO L87 Difference]: Start difference. First operand 20676 states and 107039 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:41,326 INFO L93 Difference]: Finished difference Result 35702 states and 183534 transitions. [2021-10-08 17:31:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:31:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:41,728 INFO L225 Difference]: With dead ends: 35702 [2021-10-08 17:31:41,728 INFO L226 Difference]: Without dead ends: 35244 [2021-10-08 17:31:41,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 745.9ms TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:31:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35244 states. [2021-10-08 17:31:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35244 to 28608. [2021-10-08 17:31:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28608 states, 28607 states have (on average 5.398014471982382) internal successors, (154421), 28607 states have internal predecessors, (154421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28608 states to 28608 states and 154421 transitions. [2021-10-08 17:31:43,403 INFO L78 Accepts]: Start accepts. Automaton has 28608 states and 154421 transitions. Word has length 30 [2021-10-08 17:31:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:43,403 INFO L470 AbstractCegarLoop]: Abstraction has 28608 states and 154421 transitions. [2021-10-08 17:31:43,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 28608 states and 154421 transitions. [2021-10-08 17:31:43,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:43,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:43,536 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:43,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:43,749 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 [2021-10-08 17:31:43,750 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash 585027392, now seen corresponding path program 24 times [2021-10-08 17:31:43,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:43,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877060927] [2021-10-08 17:31:43,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:31:43,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:43,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:43,753 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) [2021-10-08 17:31:43,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 17:31:44,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:31:44,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:31:44,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:31:44,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:31:44,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:31:45,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:45,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877060927] [2021-10-08 17:31:45,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877060927] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:45,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:45,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:31:45,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948069332] [2021-10-08 17:31:45,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:31:45,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:45,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:31:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:31:45,155 INFO L87 Difference]: Start difference. First operand 28608 states and 154421 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:48,715 INFO L93 Difference]: Finished difference Result 63538 states and 326441 transitions. [2021-10-08 17:31:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:31:48,716 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:49,453 INFO L225 Difference]: With dead ends: 63538 [2021-10-08 17:31:49,453 INFO L226 Difference]: Without dead ends: 63538 [2021-10-08 17:31:49,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1640.9ms TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:31:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63538 states. [2021-10-08 17:31:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63538 to 36588. [2021-10-08 17:31:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36588 states, 36587 states have (on average 5.5217153633804354) internal successors, (202023), 36587 states have internal predecessors, (202023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36588 states to 36588 states and 202023 transitions. [2021-10-08 17:31:52,206 INFO L78 Accepts]: Start accepts. Automaton has 36588 states and 202023 transitions. Word has length 30 [2021-10-08 17:31:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:52,206 INFO L470 AbstractCegarLoop]: Abstraction has 36588 states and 202023 transitions. [2021-10-08 17:31:52,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:52,206 INFO L276 IsEmpty]: Start isEmpty. Operand 36588 states and 202023 transitions. [2021-10-08 17:31:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:31:52,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:31:52,375 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:31:52,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 17:31:52,581 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 [2021-10-08 17:31:52,582 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:31:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:31:52,583 INFO L82 PathProgramCache]: Analyzing trace with hash 630167972, now seen corresponding path program 25 times [2021-10-08 17:31:52,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:31:52,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728360839] [2021-10-08 17:31:52,585 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:31:52,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:31:52,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:31:52,586 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) [2021-10-08 17:31:52,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 17:31:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:31:53,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:31:53,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:31:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:31:53,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:31:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:31:53,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:31:53,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728360839] [2021-10-08 17:31:53,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728360839] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:31:53,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:31:53,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:31:53,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451609666] [2021-10-08 17:31:53,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:31:53,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:31:53,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:31:53,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:31:53,806 INFO L87 Difference]: Start difference. First operand 36588 states and 202023 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:31:55,977 INFO L93 Difference]: Finished difference Result 65798 states and 360902 transitions. [2021-10-08 17:31:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 17:31:55,978 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:31:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:31:56,488 INFO L225 Difference]: With dead ends: 65798 [2021-10-08 17:31:56,489 INFO L226 Difference]: Without dead ends: 64412 [2021-10-08 17:31:56,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 495.0ms TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:31:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64412 states. [2021-10-08 17:31:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64412 to 55584. [2021-10-08 17:31:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55584 states, 55583 states have (on average 5.68679272439415) internal successors, (316089), 55583 states have internal predecessors, (316089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55584 states to 55584 states and 316089 transitions. [2021-10-08 17:31:59,992 INFO L78 Accepts]: Start accepts. Automaton has 55584 states and 316089 transitions. Word has length 30 [2021-10-08 17:31:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:31:59,992 INFO L470 AbstractCegarLoop]: Abstraction has 55584 states and 316089 transitions. [2021-10-08 17:31:59,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:31:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 55584 states and 316089 transitions. [2021-10-08 17:32:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:32:00,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:00,711 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:00,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:00,925 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 [2021-10-08 17:32:00,926 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:32:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:00,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2137566508, now seen corresponding path program 26 times [2021-10-08 17:32:00,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:00,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477356004] [2021-10-08 17:32:00,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:32:00,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:00,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:00,929 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) [2021-10-08 17:32:00,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 17:32:01,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:32:01,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:01,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:32:01,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:32:01,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:32:02,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:02,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477356004] [2021-10-08 17:32:02,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477356004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:02,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:02,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:32:02,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720053550] [2021-10-08 17:32:02,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:32:02,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:02,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:32:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:32:02,193 INFO L87 Difference]: Start difference. First operand 55584 states and 316089 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:08,309 INFO L93 Difference]: Finished difference Result 184688 states and 1014669 transitions. [2021-10-08 17:32:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:32:08,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:32:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:10,677 INFO L225 Difference]: With dead ends: 184688 [2021-10-08 17:32:10,677 INFO L226 Difference]: Without dead ends: 183398 [2021-10-08 17:32:10,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1533.1ms TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 17:32:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183398 states. [2021-10-08 17:32:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183398 to 102390. [2021-10-08 17:32:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102390 states, 102389 states have (on average 6.00754963912139) internal successors, (615107), 102389 states have internal predecessors, (615107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102390 states to 102390 states and 615107 transitions. [2021-10-08 17:32:22,077 INFO L78 Accepts]: Start accepts. Automaton has 102390 states and 615107 transitions. Word has length 30 [2021-10-08 17:32:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:22,078 INFO L470 AbstractCegarLoop]: Abstraction has 102390 states and 615107 transitions. [2021-10-08 17:32:22,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 102390 states and 615107 transitions. [2021-10-08 17:32:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:32:22,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:22,746 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:22,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:22,947 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 [2021-10-08 17:32:22,947 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:32:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash 466747922, now seen corresponding path program 27 times [2021-10-08 17:32:22,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:22,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088097891] [2021-10-08 17:32:22,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:32:22,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:22,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:22,950 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) [2021-10-08 17:32:22,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 17:32:23,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:32:23,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:23,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:32:23,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:24,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:24,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:24,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088097891] [2021-10-08 17:32:24,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088097891] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:24,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:24,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 17:32:24,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192055411] [2021-10-08 17:32:24,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:32:24,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:32:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:32:24,443 INFO L87 Difference]: Start difference. First operand 102390 states and 615107 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:32,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:32,400 INFO L93 Difference]: Finished difference Result 192102 states and 1088947 transitions. [2021-10-08 17:32:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:32:32,402 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:32:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:35,849 INFO L225 Difference]: With dead ends: 192102 [2021-10-08 17:32:35,850 INFO L226 Difference]: Without dead ends: 190458 [2021-10-08 17:32:35,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2146.2ms TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:32:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190458 states. [2021-10-08 17:32:45,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190458 to 124790. [2021-10-08 17:32:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124790 states, 124789 states have (on average 6.109376627747638) internal successors, (762383), 124789 states have internal predecessors, (762383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124790 states to 124790 states and 762383 transitions. [2021-10-08 17:32:48,540 INFO L78 Accepts]: Start accepts. Automaton has 124790 states and 762383 transitions. Word has length 30 [2021-10-08 17:32:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:48,540 INFO L470 AbstractCegarLoop]: Abstraction has 124790 states and 762383 transitions. [2021-10-08 17:32:48,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 124790 states and 762383 transitions. [2021-10-08 17:32:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:32:49,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:49,323 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:49,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:49,528 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 [2021-10-08 17:32:49,529 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:32:49,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:49,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1883996168, now seen corresponding path program 28 times [2021-10-08 17:32:49,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:49,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524890254] [2021-10-08 17:32:49,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:32:49,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:49,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:49,533 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) [2021-10-08 17:32:49,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 17:32:50,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:32:50,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:50,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:32:50,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:50,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:51,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:51,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524890254] [2021-10-08 17:32:51,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524890254] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:51,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:51,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-10-08 17:32:51,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067093521] [2021-10-08 17:32:51,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:32:51,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:51,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:32:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:32:51,161 INFO L87 Difference]: Start difference. First operand 124790 states and 762383 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:56,517 INFO L93 Difference]: Finished difference Result 168180 states and 983133 transitions. [2021-10-08 17:32:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 17:32:56,518 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:32:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:58,722 INFO L225 Difference]: With dead ends: 168180 [2021-10-08 17:32:58,723 INFO L226 Difference]: Without dead ends: 166568 [2021-10-08 17:32:58,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 1466.5ms TimeCoverageRelationStatistics Valid=371, Invalid=1189, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:32:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166568 states. [2021-10-08 17:33:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166568 to 132046. [2021-10-08 17:33:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132046 states, 132045 states have (on average 6.094861600212049) internal successors, (804796), 132045 states have internal predecessors, (804796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:09,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132046 states to 132046 states and 804796 transitions. [2021-10-08 17:33:09,318 INFO L78 Accepts]: Start accepts. Automaton has 132046 states and 804796 transitions. Word has length 30 [2021-10-08 17:33:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:09,318 INFO L470 AbstractCegarLoop]: Abstraction has 132046 states and 804796 transitions. [2021-10-08 17:33:09,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 132046 states and 804796 transitions. [2021-10-08 17:33:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:33:10,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:10,707 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:10,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:10,920 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 [2021-10-08 17:33:10,921 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:33:10,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:10,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1475466814, now seen corresponding path program 29 times [2021-10-08 17:33:10,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:10,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045892557] [2021-10-08 17:33:10,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:33:10,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:10,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:10,924 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) [2021-10-08 17:33:10,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 17:33:11,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:33:11,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:11,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:33:11,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:11,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:12,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:12,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045892557] [2021-10-08 17:33:12,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045892557] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:12,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:12,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:33:12,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274457610] [2021-10-08 17:33:12,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:33:12,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:12,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:33:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:33:12,095 INFO L87 Difference]: Start difference. First operand 132046 states and 804796 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:16,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:16,673 INFO L93 Difference]: Finished difference Result 186338 states and 1092963 transitions. [2021-10-08 17:33:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:33:16,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:33:16,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:19,449 INFO L225 Difference]: With dead ends: 186338 [2021-10-08 17:33:19,449 INFO L226 Difference]: Without dead ends: 184328 [2021-10-08 17:33:19,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 514.5ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:33:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184328 states. [2021-10-08 17:33:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184328 to 146504. [2021-10-08 17:33:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146504 states, 146503 states have (on average 6.098509928124339) internal successors, (893450), 146503 states have internal predecessors, (893450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146504 states to 146504 states and 893450 transitions. [2021-10-08 17:33:34,202 INFO L78 Accepts]: Start accepts. Automaton has 146504 states and 893450 transitions. Word has length 30 [2021-10-08 17:33:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:34,203 INFO L470 AbstractCegarLoop]: Abstraction has 146504 states and 893450 transitions. [2021-10-08 17:33:34,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 146504 states and 893450 transitions. [2021-10-08 17:33:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:33:35,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:35,570 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:35,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:35,783 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 [2021-10-08 17:33:35,783 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:33:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:35,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1844178446, now seen corresponding path program 30 times [2021-10-08 17:33:35,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:35,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313044423] [2021-10-08 17:33:35,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:33:35,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:35,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:35,793 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) [2021-10-08 17:33:35,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 17:33:36,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:33:36,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:36,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:33:36,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:37,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:37,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:37,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313044423] [2021-10-08 17:33:37,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313044423] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:37,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:37,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:33:37,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981296149] [2021-10-08 17:33:37,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:33:37,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:33:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:33:37,331 INFO L87 Difference]: Start difference. First operand 146504 states and 893450 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:43,066 INFO L93 Difference]: Finished difference Result 178428 states and 1047242 transitions. [2021-10-08 17:33:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:33:43,067 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:33:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:45,909 INFO L225 Difference]: With dead ends: 178428 [2021-10-08 17:33:45,909 INFO L226 Difference]: Without dead ends: 173958 [2021-10-08 17:33:45,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1229.5ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:33:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173958 states. [2021-10-08 17:33:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173958 to 146320. [2021-10-08 17:33:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146320 states, 146319 states have (on average 6.070995564485815) internal successors, (888302), 146319 states have internal predecessors, (888302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146320 states to 146320 states and 888302 transitions. [2021-10-08 17:33:57,718 INFO L78 Accepts]: Start accepts. Automaton has 146320 states and 888302 transitions. Word has length 30 [2021-10-08 17:33:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:57,719 INFO L470 AbstractCegarLoop]: Abstraction has 146320 states and 888302 transitions. [2021-10-08 17:33:57,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 146320 states and 888302 transitions. [2021-10-08 17:33:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:33:59,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:59,199 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:59,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:59,412 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 [2021-10-08 17:33:59,413 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:33:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:59,413 INFO L82 PathProgramCache]: Analyzing trace with hash -803652294, now seen corresponding path program 31 times [2021-10-08 17:33:59,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:59,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805502982] [2021-10-08 17:33:59,414 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:33:59,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:59,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:59,415 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) [2021-10-08 17:33:59,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 17:34:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:34:00,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:34:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:34:00,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:34:00,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:00,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805502982] [2021-10-08 17:34:00,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805502982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:00,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:00,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:34:00,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814710434] [2021-10-08 17:34:00,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:34:00,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:34:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:34:00,665 INFO L87 Difference]: Start difference. First operand 146320 states and 888302 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:05,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:05,180 INFO L93 Difference]: Finished difference Result 166182 states and 992190 transitions. [2021-10-08 17:34:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:34:05,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:34:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:08,428 INFO L225 Difference]: With dead ends: 166182 [2021-10-08 17:34:08,428 INFO L226 Difference]: Without dead ends: 165494 [2021-10-08 17:34:08,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 435.6ms TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:34:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165494 states. [2021-10-08 17:34:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165494 to 152008. [2021-10-08 17:34:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152008 states, 152007 states have (on average 6.0893050977915495) internal successors, (925617), 152007 states have internal predecessors, (925617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152008 states to 152008 states and 925617 transitions. [2021-10-08 17:34:21,671 INFO L78 Accepts]: Start accepts. Automaton has 152008 states and 925617 transitions. Word has length 30 [2021-10-08 17:34:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:21,671 INFO L470 AbstractCegarLoop]: Abstraction has 152008 states and 925617 transitions. [2021-10-08 17:34:21,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 152008 states and 925617 transitions. [2021-10-08 17:34:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:34:23,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:23,195 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:23,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 17:34:23,408 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 [2021-10-08 17:34:23,408 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:34:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:23,410 INFO L82 PathProgramCache]: Analyzing trace with hash -652186358, now seen corresponding path program 32 times [2021-10-08 17:34:23,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:23,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742117195] [2021-10-08 17:34:23,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:34:23,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:23,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:23,413 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) [2021-10-08 17:34:23,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 17:34:24,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:34:24,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:24,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:34:24,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:24,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:25,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:25,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742117195] [2021-10-08 17:34:25,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742117195] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:25,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:25,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:34:25,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884635398] [2021-10-08 17:34:25,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:34:25,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:34:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:34:25,040 INFO L87 Difference]: Start difference. First operand 152008 states and 925617 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:37,056 INFO L93 Difference]: Finished difference Result 237776 states and 1399631 transitions. [2021-10-08 17:34:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 17:34:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:34:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:40,114 INFO L225 Difference]: With dead ends: 237776 [2021-10-08 17:34:40,114 INFO L226 Difference]: Without dead ends: 237534 [2021-10-08 17:34:40,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 3757.7ms TimeCoverageRelationStatistics Valid=541, Invalid=1621, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:34:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237534 states. [2021-10-08 17:34:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237534 to 185084. [2021-10-08 17:34:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185084 states, 185083 states have (on average 6.187072826785821) internal successors, (1145122), 185083 states have internal predecessors, (1145122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185084 states to 185084 states and 1145122 transitions. [2021-10-08 17:34:59,004 INFO L78 Accepts]: Start accepts. Automaton has 185084 states and 1145122 transitions. Word has length 30 [2021-10-08 17:34:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:59,004 INFO L470 AbstractCegarLoop]: Abstraction has 185084 states and 1145122 transitions. [2021-10-08 17:34:59,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 185084 states and 1145122 transitions. [2021-10-08 17:35:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:35:00,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:00,722 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:00,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 17:35:00,935 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 [2021-10-08 17:35:00,935 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:35:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash 387970490, now seen corresponding path program 33 times [2021-10-08 17:35:00,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:00,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050325554] [2021-10-08 17:35:00,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:35:00,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:00,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:00,937 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) [2021-10-08 17:35:00,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 17:35:01,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:35:01,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:01,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:35:01,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:35:01,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:35:02,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:02,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050325554] [2021-10-08 17:35:02,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050325554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:02,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:02,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 17:35:02,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442807848] [2021-10-08 17:35:02,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:35:02,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:35:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:35:02,505 INFO L87 Difference]: Start difference. First operand 185084 states and 1145122 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:12,037 INFO L93 Difference]: Finished difference Result 237944 states and 1441442 transitions. [2021-10-08 17:35:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:35:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:35:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:16,541 INFO L225 Difference]: With dead ends: 237944 [2021-10-08 17:35:16,541 INFO L226 Difference]: Without dead ends: 236192 [2021-10-08 17:35:16,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1959.0ms TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:35:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236192 states. [2021-10-08 17:35:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236192 to 197092. [2021-10-08 17:35:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197092 states, 197091 states have (on average 6.212607374258591) internal successors, (1224449), 197091 states have internal predecessors, (1224449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197092 states to 197092 states and 1224449 transitions. [2021-10-08 17:35:35,122 INFO L78 Accepts]: Start accepts. Automaton has 197092 states and 1224449 transitions. Word has length 30 [2021-10-08 17:35:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:35,122 INFO L470 AbstractCegarLoop]: Abstraction has 197092 states and 1224449 transitions. [2021-10-08 17:35:35,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 197092 states and 1224449 transitions. [2021-10-08 17:35:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:35:36,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:36,977 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:36,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-10-08 17:35:37,177 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 [2021-10-08 17:35:37,178 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:35:37,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:37,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1876632004, now seen corresponding path program 34 times [2021-10-08 17:35:37,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:37,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352816448] [2021-10-08 17:35:37,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:35:37,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:37,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:37,181 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) [2021-10-08 17:35:37,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 17:35:37,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:35:37,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:37,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:35:37,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:35:38,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:35:38,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:38,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352816448] [2021-10-08 17:35:38,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352816448] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:38,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:38,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:35:38,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608657279] [2021-10-08 17:35:38,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:35:38,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:35:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:35:38,457 INFO L87 Difference]: Start difference. First operand 197092 states and 1224449 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:46,917 INFO L93 Difference]: Finished difference Result 283850 states and 1711156 transitions. [2021-10-08 17:35:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:35:46,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:35:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:51,048 INFO L225 Difference]: With dead ends: 283850 [2021-10-08 17:35:51,049 INFO L226 Difference]: Without dead ends: 283200 [2021-10-08 17:35:51,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1537.6ms TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:35:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283200 states. [2021-10-08 17:36:10,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283200 to 212416. [2021-10-08 17:36:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212416 states, 212415 states have (on average 6.169343031330179) internal successors, (1310461), 212415 states have internal predecessors, (1310461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212416 states to 212416 states and 1310461 transitions. [2021-10-08 17:36:17,599 INFO L78 Accepts]: Start accepts. Automaton has 212416 states and 1310461 transitions. Word has length 30 [2021-10-08 17:36:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:17,600 INFO L470 AbstractCegarLoop]: Abstraction has 212416 states and 1310461 transitions. [2021-10-08 17:36:17,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 212416 states and 1310461 transitions. [2021-10-08 17:36:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:36:19,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:19,520 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:19,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 17:36:19,735 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 [2021-10-08 17:36:19,736 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:36:19,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:19,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1744736452, now seen corresponding path program 35 times [2021-10-08 17:36:19,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:19,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17788143] [2021-10-08 17:36:19,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:36:19,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:19,738 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) [2021-10-08 17:36:19,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 17:36:20,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:36:20,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:36:20,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:36:20,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:36:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:36:20,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:21,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:21,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17788143] [2021-10-08 17:36:21,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17788143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:21,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:21,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-10-08 17:36:21,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058030724] [2021-10-08 17:36:21,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:36:21,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:36:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:36:21,405 INFO L87 Difference]: Start difference. First operand 212416 states and 1310461 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:39,687 INFO L93 Difference]: Finished difference Result 349858 states and 2044812 transitions. [2021-10-08 17:36:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-08 17:36:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:36:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:47,228 INFO L225 Difference]: With dead ends: 349858 [2021-10-08 17:36:47,228 INFO L226 Difference]: Without dead ends: 349062 [2021-10-08 17:36:47,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 5823.0ms TimeCoverageRelationStatistics Valid=1055, Invalid=4645, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 17:36:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349062 states. [2021-10-08 17:37:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349062 to 217922. [2021-10-08 17:37:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217922 states, 217921 states have (on average 6.194015262411608) internal successors, (1349806), 217921 states have internal predecessors, (1349806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217922 states to 217922 states and 1349806 transitions. [2021-10-08 17:37:18,004 INFO L78 Accepts]: Start accepts. Automaton has 217922 states and 1349806 transitions. Word has length 30 [2021-10-08 17:37:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:18,005 INFO L470 AbstractCegarLoop]: Abstraction has 217922 states and 1349806 transitions. [2021-10-08 17:37:18,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 217922 states and 1349806 transitions. [2021-10-08 17:37:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:37:20,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:20,026 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:20,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-08 17:37:20,240 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 [2021-10-08 17:37:20,240 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:37:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:20,241 INFO L82 PathProgramCache]: Analyzing trace with hash 93672516, now seen corresponding path program 36 times [2021-10-08 17:37:20,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:20,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37645081] [2021-10-08 17:37:20,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:37:20,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:20,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:20,242 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) [2021-10-08 17:37:20,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 17:37:21,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:37:21,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:37:21,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:37:21,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:37:21,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:37:21,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:21,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37645081] [2021-10-08 17:37:21,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37645081] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:21,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:21,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:37:21,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27273973] [2021-10-08 17:37:21,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:37:21,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:37:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:37:21,664 INFO L87 Difference]: Start difference. First operand 217922 states and 1349806 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:32,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:32,578 INFO L93 Difference]: Finished difference Result 309562 states and 1882353 transitions. [2021-10-08 17:37:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:37:32,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:37:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:39,555 INFO L225 Difference]: With dead ends: 309562 [2021-10-08 17:37:39,555 INFO L226 Difference]: Without dead ends: 308224 [2021-10-08 17:37:39,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1092.2ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:37:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308224 states. [2021-10-08 17:38:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308224 to 267220. [2021-10-08 17:38:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267220 states, 267219 states have (on average 6.302238987497146) internal successors, (1684078), 267219 states have internal predecessors, (1684078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267220 states to 267220 states and 1684078 transitions. [2021-10-08 17:38:06,872 INFO L78 Accepts]: Start accepts. Automaton has 267220 states and 1684078 transitions. Word has length 30 [2021-10-08 17:38:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:06,873 INFO L470 AbstractCegarLoop]: Abstraction has 267220 states and 1684078 transitions. [2021-10-08 17:38:06,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 267220 states and 1684078 transitions. [2021-10-08 17:38:09,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:38:09,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:09,240 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:09,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-08 17:38:09,454 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 [2021-10-08 17:38:09,454 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:38:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:09,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2044952386, now seen corresponding path program 37 times [2021-10-08 17:38:09,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:09,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869475655] [2021-10-08 17:38:09,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:38:09,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:09,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:09,457 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) [2021-10-08 17:38:09,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 17:38:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:38:10,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:38:10,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:38:11,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:38:11,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:11,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869475655] [2021-10-08 17:38:11,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869475655] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:11,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:11,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:38:11,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566236594] [2021-10-08 17:38:11,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:38:11,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:38:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:38:11,270 INFO L87 Difference]: Start difference. First operand 267220 states and 1684078 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:19,972 INFO L93 Difference]: Finished difference Result 279366 states and 1736603 transitions. [2021-10-08 17:38:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:38:19,974 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:38:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:26,184 INFO L225 Difference]: With dead ends: 279366 [2021-10-08 17:38:26,185 INFO L226 Difference]: Without dead ends: 278316 [2021-10-08 17:38:26,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 378.1ms TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:38:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278316 states. Received shutdown request... [2021-10-08 17:38:35,748 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:38:35,755 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 [2021-10-08 17:38:35,755 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:38:35,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-08 17:38:35,949 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 [2021-10-08 17:38:35,950 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-08 17:38:35,953 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:38:35,953 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:38:35,953 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:38:35,953 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:38:35,953 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:38:35,953 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-08 17:38:35,954 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-08 17:38:35,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:38:35,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:38:35,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:38:35,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 17:38:35,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 17:38:35,960 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:38:35,960 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:38:35,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:38:35 BasicIcfg [2021-10-08 17:38:35,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:38:35,963 INFO L168 Benchmark]: Toolchain (without parser) took 565106.35 ms. Allocated memory was 152.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 127.6 MB in the beginning and 5.3 GB in the end (delta: -5.2 GB). Peak memory consumption was 4.6 GB. Max. memory is 8.0 GB. [2021-10-08 17:38:35,963 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:38:35,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.46 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 116.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:38:35,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.56 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:38:35,964 INFO L168 Benchmark]: Boogie Preprocessor took 82.00 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 112.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:38:35,965 INFO L168 Benchmark]: RCFGBuilder took 790.85 ms. Allocated memory is still 152.0 MB. Free memory was 112.7 MB in the beginning and 133.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. [2021-10-08 17:38:35,965 INFO L168 Benchmark]: TraceAbstraction took 563713.27 ms. Allocated memory was 152.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 133.1 MB in the beginning and 5.3 GB in the end (delta: -5.2 GB). Peak memory consumption was 4.6 GB. Max. memory is 8.0 GB. [2021-10-08 17:38:35,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 406.46 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 116.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 95.56 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.00 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 112.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 790.85 ms. Allocated memory is still 152.0 MB. Free memory was 112.7 MB in the beginning and 133.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 563713.27 ms. Allocated memory was 152.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 133.1 MB in the beginning and 5.3 GB in the end (delta: -5.2 GB). Peak memory consumption was 4.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19023.3ms, 141 PlacesBefore, 60 PlacesAfterwards, 137 TransitionsBefore, 51 TransitionsAfterwards, 3160 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 124 TotalNumberOfCompositions, 3725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3604, positive: 3597, positive conditional: 0, positive unconditional: 3597, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1994, positive: 1987, positive conditional: 0, positive unconditional: 1987, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1994, positive: 1987, positive conditional: 0, positive unconditional: 1987, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3604, positive: 1610, positive conditional: 0, positive unconditional: 1610, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1994, unknown conditional: 0, unknown unconditional: 1994] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, 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: 98]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 169 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 563500.0ms, OverallIterations: 76, TraceHistogramMax: 2, EmptinessCheckTime: 19193.6ms, AutomataDifference: 211235.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19136.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6121 SDtfs, 13964 SDslu, 27025 SDs, 0 SdLazy, 19886 SolverSat, 1541 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43094.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4670 GetRequests, 3365 SyntacticMatches, 1 SemanticMatches, 1304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8216 ImplicationChecksByTransitivity, 47990.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=267220occurred in iteration=75, InterpolantAutomatonStates: 1187, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 226704.0ms AutomataMinimizationTime, 76 MinimizatonAttempts, 762542 StatesRemovedByMinimization, 64 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 781.7ms SsaConstructionTime, 8290.7ms SatisfiabilityAnalysisTime, 37603.6ms InterpolantComputationTime, 1961 NumberOfCodeBlocks, 1943 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 3770 ConstructedInterpolants, 4 QuantifiedInterpolants, 17215 SizeOfPredicates, 208 NumberOfNonLiveVariables, 9011 ConjunctsInSsa, 480 ConjunctsInUnsatCore, 152 InterpolantComputations, 56 PerfectInterpolantSequences, 296/554 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