/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:14:03,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:14:03,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:14:03,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:14:03,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:14:03,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:14:03,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:14:03,244 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 17:14:03,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:14:03,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:14:03,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:14:03,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:14:03,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:14:03,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:14:03,307 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:14:03,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:14:03,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:14:03,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:14:03,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:14:03,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:14:03,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:14:03,310 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:14:03,310 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:14:03,311 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:14:03,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:14:03,311 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:14:03,311 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:14:03,312 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:14:03,312 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:14:03,312 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:14:03,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:14:03,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:14:03,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:14:03,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:14:03,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:14:03,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:14:03,314 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:14:03,314 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:14:03,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:14:03,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:14:03,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:14:03,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:14:03,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:14:03,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:14:03,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:14:03,730 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:14:03,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2021-10-08 17:14:03,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1703bf8/61d9ef1d568e429b8074dc7e171f77c5/FLAG9603dbe0f [2021-10-08 17:14:04,444 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:14:04,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2021-10-08 17:14:04,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1703bf8/61d9ef1d568e429b8074dc7e171f77c5/FLAG9603dbe0f [2021-10-08 17:14:04,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1703bf8/61d9ef1d568e429b8074dc7e171f77c5 [2021-10-08 17:14:04,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:14:04,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:14:04,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:14:04,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:14:04,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:14:04,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:14:04" (1/1) ... [2021-10-08 17:14:04,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fabb2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:04, skipping insertion in model container [2021-10-08 17:14:04,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:14:04" (1/1) ... [2021-10-08 17:14:04,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:14:04,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:14:05,055 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[2646,2659] [2021-10-08 17:14:05,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:14:05,075 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:14:05,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[2646,2659] [2021-10-08 17:14:05,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:14:05,125 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:14:05,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05 WrapperNode [2021-10-08 17:14:05,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:14:05,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:14:05,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:14:05,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:14:05,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:14:05,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:14:05,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:14:05,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:14:05,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:14:05,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:14:05,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:14:05,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:14:05,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (1/1) ... [2021-10-08 17:14:05,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:14:05,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:14:05,289 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 17:14:05,318 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 17:14:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:14:05,377 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:14:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:14:05,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:14:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:14:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:14:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:14:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:14:05,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:14:05,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:14:05,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:14:05,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:14:05,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:14:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:14:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:14:05,384 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 17:14:06,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:14:06,211 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 17:14:06,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:14:06 BoogieIcfgContainer [2021-10-08 17:14:06,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:14:06,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:14:06,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:14:06,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:14:06,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:14:04" (1/3) ... [2021-10-08 17:14:06,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3944f325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:14:06, skipping insertion in model container [2021-10-08 17:14:06,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:14:05" (2/3) ... [2021-10-08 17:14:06,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3944f325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:14:06, skipping insertion in model container [2021-10-08 17:14:06,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:14:06" (3/3) ... [2021-10-08 17:14:06,224 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2021-10-08 17:14:06,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:14:06,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-08 17:14:06,231 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:14:06,268 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,270 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,270 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,270 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,270 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,271 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,271 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,271 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,271 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,272 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,272 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,272 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,272 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,272 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,273 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,273 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,273 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,273 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,273 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,274 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,274 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,278 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,279 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,280 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,286 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,291 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,295 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:14:06,303 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 17:14:06,356 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:14:06,374 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 17:14:06,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-08 17:14:06,399 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:14:06,415 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 248 flow [2021-10-08 17:14:06,425 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 248 flow [2021-10-08 17:14:06,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2021-10-08 17:14:06,505 INFO L129 PetriNetUnfolder]: 7/109 cut-off events. [2021-10-08 17:14:06,506 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 17:14:06,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2021-10-08 17:14:06,515 INFO L116 LiptonReduction]: Number of co-enabled transitions 1322 [2021-10-08 17:14:17,757 INFO L131 LiptonReduction]: Checked pairs total: 3224 [2021-10-08 17:14:17,757 INFO L133 LiptonReduction]: Total number of compositions: 103 [2021-10-08 17:14:17,768 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 41 transitions, 106 flow [2021-10-08 17:14:17,799 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:14:17,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:17,811 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:14:17,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:17,818 INFO L82 PathProgramCache]: Analyzing trace with hash 486, now seen corresponding path program 1 times [2021-10-08 17:14:17,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:17,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371129165] [2021-10-08 17:14:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:17,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:17,837 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 17:14:17,847 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 17:14:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:17,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:14:17,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:17,908 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 17:14:17,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:17,908 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 17:14:17,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:17,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371129165] [2021-10-08 17:14:17,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371129165] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:17,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:17,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:14:17,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378731333] [2021-10-08 17:14:17,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:14:17,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:17,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:14:17,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:14:17,938 INFO L87 Difference]: Start difference. First operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 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 17:14:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:17,971 INFO L93 Difference]: Finished difference Result 252 states and 844 transitions. [2021-10-08 17:14:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:14:17,973 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 17:14:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:17,991 INFO L225 Difference]: With dead ends: 252 [2021-10-08 17:14:17,991 INFO L226 Difference]: Without dead ends: 252 [2021-10-08 17:14:17,992 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 17:14:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-08 17:14:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-08 17:14:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 241 states have (on average 3.5020746887966805) internal successors, (844), 251 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 844 transitions. [2021-10-08 17:14:18,068 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 844 transitions. Word has length 1 [2021-10-08 17:14:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:18,069 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 844 transitions. [2021-10-08 17:14:18,069 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 17:14:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 844 transitions. [2021-10-08 17:14:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:14:18,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:18,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:14:18,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 17:14:18,291 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 17:14:18,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash 477240, now seen corresponding path program 1 times [2021-10-08 17:14:18,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:18,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349299823] [2021-10-08 17:14:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:18,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:18,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:18,297 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 17:14:18,304 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 17:14:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:18,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:14:18,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:18,510 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:14:18,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:14:18,597 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 17:14:18,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:18,617 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 17:14:18,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:18,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349299823] [2021-10-08 17:14:18,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349299823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:18,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:18,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:14:18,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287984226] [2021-10-08 17:14:18,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:14:18,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:14:18,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:18,628 INFO L87 Difference]: Start difference. First operand 252 states and 844 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:18,690 INFO L93 Difference]: Finished difference Result 240 states and 813 transitions. [2021-10-08 17:14:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:14:18,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:18,696 INFO L225 Difference]: With dead ends: 240 [2021-10-08 17:14:18,696 INFO L226 Difference]: Without dead ends: 240 [2021-10-08 17:14:18,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-08 17:14:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-10-08 17:14:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 3.5194805194805197) internal successors, (813), 239 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:18,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 813 transitions. [2021-10-08 17:14:18,727 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 813 transitions. Word has length 3 [2021-10-08 17:14:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:18,728 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 813 transitions. [2021-10-08 17:14:18,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 813 transitions. [2021-10-08 17:14:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:14:18,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:18,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:14:18,747 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 17:14:18,943 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 17:14:18,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash 477241, now seen corresponding path program 1 times [2021-10-08 17:14:18,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:18,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849383058] [2021-10-08 17:14:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:18,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:18,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:18,951 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 17:14:18,977 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 17:14:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:19,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:14:19,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:19,221 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:14:19,222 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-08 17:14:19,380 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 17:14:19,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:19,445 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 17:14:19,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:19,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849383058] [2021-10-08 17:14:19,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849383058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:19,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:19,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:14:19,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213338639] [2021-10-08 17:14:19,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:19,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:19,452 INFO L87 Difference]: Start difference. First operand 240 states and 813 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 17:14:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:19,525 INFO L93 Difference]: Finished difference Result 228 states and 782 transitions. [2021-10-08 17:14:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:19,528 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 17:14:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:19,532 INFO L225 Difference]: With dead ends: 228 [2021-10-08 17:14:19,532 INFO L226 Difference]: Without dead ends: 228 [2021-10-08 17:14:19,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-08 17:14:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-08 17:14:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 3.5384615384615383) internal successors, (782), 227 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 782 transitions. [2021-10-08 17:14:19,579 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 782 transitions. Word has length 3 [2021-10-08 17:14:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:19,580 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 782 transitions. [2021-10-08 17:14:19,580 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 17:14:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 782 transitions. [2021-10-08 17:14:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:14:19,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:19,581 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:14:19,596 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 17:14:19,782 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 17:14:19,782 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash 458640848, now seen corresponding path program 1 times [2021-10-08 17:14:19,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:19,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452293480] [2021-10-08 17:14:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:19,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:19,787 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 17:14:19,789 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 17:14:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:19,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:14:19,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:20,017 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:14:20,017 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-08 17:14:20,161 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 17:14:20,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:20,265 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 17:14:20,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:20,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452293480] [2021-10-08 17:14:20,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452293480] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:20,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:20,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:14:20,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420748352] [2021-10-08 17:14:20,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:20,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:20,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:20,273 INFO L87 Difference]: Start difference. First operand 228 states and 782 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 17:14:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:20,323 INFO L93 Difference]: Finished difference Result 210 states and 723 transitions. [2021-10-08 17:14:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:20,325 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 17:14:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:20,328 INFO L225 Difference]: With dead ends: 210 [2021-10-08 17:14:20,328 INFO L226 Difference]: Without dead ends: 210 [2021-10-08 17:14:20,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-08 17:14:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-10-08 17:14:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 3.526829268292683) internal successors, (723), 209 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 723 transitions. [2021-10-08 17:14:20,366 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 723 transitions. Word has length 5 [2021-10-08 17:14:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:20,366 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 723 transitions. [2021-10-08 17:14:20,366 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 17:14:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 723 transitions. [2021-10-08 17:14:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:14:20,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:20,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:14:20,390 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 17:14:20,589 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 17:14:20,590 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:20,591 INFO L82 PathProgramCache]: Analyzing trace with hash 458640849, now seen corresponding path program 1 times [2021-10-08 17:14:20,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:20,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435641062] [2021-10-08 17:14:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:20,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:20,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:20,594 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 17:14:20,597 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 17:14:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:20,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:14:20,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:20,693 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:14:20,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:14:20,735 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 17:14:20,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:20,759 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 17:14:20,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:20,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435641062] [2021-10-08 17:14:20,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435641062] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:20,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:20,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:14:20,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053954080] [2021-10-08 17:14:20,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:14:20,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:20,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:14:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:20,763 INFO L87 Difference]: Start difference. First operand 210 states and 723 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 17:14:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:20,805 INFO L93 Difference]: Finished difference Result 192 states and 664 transitions. [2021-10-08 17:14:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:20,807 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 17:14:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:20,810 INFO L225 Difference]: With dead ends: 192 [2021-10-08 17:14:20,810 INFO L226 Difference]: Without dead ends: 192 [2021-10-08 17:14:20,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:14:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-08 17:14:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-08 17:14:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 3.513227513227513) internal successors, (664), 191 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 664 transitions. [2021-10-08 17:14:20,830 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 664 transitions. Word has length 5 [2021-10-08 17:14:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:20,831 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 664 transitions. [2021-10-08 17:14:20,831 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 17:14:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 664 transitions. [2021-10-08 17:14:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:14:20,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:20,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:20,855 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 17:14:21,051 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 17:14:21,051 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:21,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1627763441, now seen corresponding path program 1 times [2021-10-08 17:14:21,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:21,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552395771] [2021-10-08 17:14:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:21,057 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:21,063 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 17:14:21,097 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 17:14:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:21,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:14:21,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:21,340 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:14:21,341 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 4 case distinctions, treesize of input 29 treesize of output 59 [2021-10-08 17:14:21,352 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 60 treesize of output 58 [2021-10-08 17:14:21,594 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 17:14:21,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:21,700 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 17:14:21,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:21,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552395771] [2021-10-08 17:14:21,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552395771] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:21,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:21,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:14:21,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082762059] [2021-10-08 17:14:21,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:21,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:21,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:21,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:21,703 INFO L87 Difference]: Start difference. First operand 192 states and 664 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 17:14:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:21,738 INFO L93 Difference]: Finished difference Result 160 states and 536 transitions. [2021-10-08 17:14:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:21,739 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 17:14:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:21,741 INFO L225 Difference]: With dead ends: 160 [2021-10-08 17:14:21,741 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 17:14:21,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:21,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 17:14:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-08 17:14:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 3.392405063291139) internal successors, (536), 159 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 536 transitions. [2021-10-08 17:14:21,750 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 536 transitions. Word has length 7 [2021-10-08 17:14:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:21,750 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 536 transitions. [2021-10-08 17:14:21,751 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 17:14:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 536 transitions. [2021-10-08 17:14:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:14:21,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:21,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:21,769 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 17:14:21,969 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 17:14:21,970 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:21,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:21,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1627763440, now seen corresponding path program 1 times [2021-10-08 17:14:21,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:21,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597265049] [2021-10-08 17:14:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:21,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:21,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:21,975 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 17:14:21,978 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 17:14:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:22,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:14:22,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:22,094 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:14:22,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:14:22,165 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 17:14:22,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:22,209 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 17:14:22,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:22,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597265049] [2021-10-08 17:14:22,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597265049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:22,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:22,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:22,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440256382] [2021-10-08 17:14:22,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:14:22,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:14:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:22,213 INFO L87 Difference]: Start difference. First operand 160 states and 536 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 17:14:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:22,248 INFO L93 Difference]: Finished difference Result 128 states and 408 transitions. [2021-10-08 17:14:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 7 [2021-10-08 17:14:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:22,251 INFO L225 Difference]: With dead ends: 128 [2021-10-08 17:14:22,251 INFO L226 Difference]: Without dead ends: 128 [2021-10-08 17:14:22,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:14:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-08 17:14:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-08 17:14:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 408 transitions. [2021-10-08 17:14:22,258 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 408 transitions. Word has length 7 [2021-10-08 17:14:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:22,259 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 408 transitions. [2021-10-08 17:14:22,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 17:14:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 408 transitions. [2021-10-08 17:14:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:14:22,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:22,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:22,283 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 17:14:22,482 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 17:14:22,483 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:22,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1586479653, now seen corresponding path program 1 times [2021-10-08 17:14:22,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:22,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167662789] [2021-10-08 17:14:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:22,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:22,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:22,485 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 17:14:22,527 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 17:14:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:22,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:14:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:22,665 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 17:14:22,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:22,700 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 17:14:22,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:22,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167662789] [2021-10-08 17:14:22,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167662789] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:22,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:22,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:22,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049034009] [2021-10-08 17:14:22,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:22,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:22,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:22,704 INFO L87 Difference]: Start difference. First operand 128 states and 408 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:22,740 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-08 17:14:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:22,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 17:14:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:22,743 INFO L225 Difference]: With dead ends: 124 [2021-10-08 17:14:22,744 INFO L226 Difference]: Without dead ends: 88 [2021-10-08 17:14:22,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-08 17:14:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-08 17:14:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-08 17:14:22,750 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-08 17:14:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:22,751 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-08 17:14:22,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-08 17:14:22,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:14:22,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:22,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:22,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:22,967 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 17:14:22,968 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:22,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:22,969 INFO L82 PathProgramCache]: Analyzing trace with hash -928837405, now seen corresponding path program 2 times [2021-10-08 17:14:22,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:22,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19029804] [2021-10-08 17:14:22,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:14:22,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:22,972 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 17:14:22,974 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 17:14:23,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:14:23,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:23,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:14:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:23,129 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 17:14:23,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:23,173 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 17:14:23,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:23,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19029804] [2021-10-08 17:14:23,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19029804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:23,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:23,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 17:14:23,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466960851] [2021-10-08 17:14:23,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:14:23,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:14:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:14:23,176 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:23,254 INFO L93 Difference]: Finished difference Result 218 states and 628 transitions. [2021-10-08 17:14:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:14:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 17:14:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:23,257 INFO L225 Difference]: With dead ends: 218 [2021-10-08 17:14:23,257 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 17:14:23,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:14:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 17:14:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-10-08 17:14:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.0059880239520957) internal successors, (502), 167 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 502 transitions. [2021-10-08 17:14:23,267 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 502 transitions. Word has length 16 [2021-10-08 17:14:23,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:23,267 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 502 transitions. [2021-10-08 17:14:23,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 502 transitions. [2021-10-08 17:14:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:14:23,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:23,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:23,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-08 17:14:23,485 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 17:14:23,486 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:23,487 INFO L82 PathProgramCache]: Analyzing trace with hash -960273624, now seen corresponding path program 1 times [2021-10-08 17:14:23,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:23,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723376222] [2021-10-08 17:14:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:23,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:23,490 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 17:14:23,491 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 17:14:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:23,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:14:23,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:23,637 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 17:14:23,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:23,679 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 17:14:23,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:23,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723376222] [2021-10-08 17:14:23,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723376222] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:23,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:23,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:23,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529733381] [2021-10-08 17:14:23,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:23,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:23,682 INFO L87 Difference]: Start difference. First operand 168 states and 502 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:23,694 INFO L93 Difference]: Finished difference Result 284 states and 806 transitions. [2021-10-08 17:14:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:14:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:23,697 INFO L225 Difference]: With dead ends: 284 [2021-10-08 17:14:23,698 INFO L226 Difference]: Without dead ends: 242 [2021-10-08 17:14:23,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-08 17:14:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 182. [2021-10-08 17:14:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.972375690607735) internal successors, (538), 181 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 538 transitions. [2021-10-08 17:14:23,707 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 538 transitions. Word has length 18 [2021-10-08 17:14:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:23,708 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 538 transitions. [2021-10-08 17:14:23,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 538 transitions. [2021-10-08 17:14:23,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:14:23,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:23,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:23,723 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 17:14:23,922 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 17:14:23,923 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:23,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1414647319, now seen corresponding path program 1 times [2021-10-08 17:14:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:23,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420863999] [2021-10-08 17:14:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:23,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:23,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:23,925 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 17:14:23,927 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 17:14:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:24,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:14:24,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:24,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:24,122 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 17:14:24,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:24,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420863999] [2021-10-08 17:14:24,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420863999] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:14:24,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:14:24,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:14:24,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786323860] [2021-10-08 17:14:24,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:14:24,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:14:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:24,125 INFO L87 Difference]: Start difference. First operand 182 states and 538 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:24,140 INFO L93 Difference]: Finished difference Result 274 states and 756 transitions. [2021-10-08 17:14:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:14:24,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:14:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:24,144 INFO L225 Difference]: With dead ends: 274 [2021-10-08 17:14:24,144 INFO L226 Difference]: Without dead ends: 232 [2021-10-08 17:14:24,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:14:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-08 17:14:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 182. [2021-10-08 17:14:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9171270718232045) internal successors, (528), 181 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2021-10-08 17:14:24,153 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 18 [2021-10-08 17:14:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:24,154 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2021-10-08 17:14:24,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2021-10-08 17:14:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:24,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:24,155 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] [2021-10-08 17:14:24,172 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 17:14:24,368 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 17:14:24,369 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:24,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1957147727, now seen corresponding path program 1 times [2021-10-08 17:14:24,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:24,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874791320] [2021-10-08 17:14:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:24,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:24,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:24,373 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 17:14:24,377 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 17:14:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:24,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:14:24,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:24,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:24,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:24,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874791320] [2021-10-08 17:14:24,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874791320] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:24,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:24,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 17:14:24,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098203606] [2021-10-08 17:14:24,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:14:24,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:14:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:14:24,626 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand has 8 states, 8 states have (on average 4.0) 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 17:14:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:24,882 INFO L93 Difference]: Finished difference Result 684 states and 2035 transitions. [2021-10-08 17:14:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:14:24,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) 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 20 [2021-10-08 17:14:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:24,888 INFO L225 Difference]: With dead ends: 684 [2021-10-08 17:14:24,889 INFO L226 Difference]: Without dead ends: 592 [2021-10-08 17:14:24,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-08 17:14:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 416. [2021-10-08 17:14:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.2144578313253014) internal successors, (1334), 415 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1334 transitions. [2021-10-08 17:14:24,921 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1334 transitions. Word has length 20 [2021-10-08 17:14:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:24,921 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1334 transitions. [2021-10-08 17:14:24,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) 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 17:14:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1334 transitions. [2021-10-08 17:14:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:24,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:24,924 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:24,941 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 17:14:25,137 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 17:14:25,137 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:25,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:25,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2077434988, now seen corresponding path program 2 times [2021-10-08 17:14:25,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:25,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753948508] [2021-10-08 17:14:25,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:14:25,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:25,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:25,141 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 17:14:25,144 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 17:14:25,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:25,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:25,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:25,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:25,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:25,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:25,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753948508] [2021-10-08 17:14:25,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753948508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:25,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:25,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 17:14:25,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701100667] [2021-10-08 17:14:25,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:14:25,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:25,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:14:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:14:25,461 INFO L87 Difference]: Start difference. First operand 416 states and 1334 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 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 17:14:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:25,511 INFO L93 Difference]: Finished difference Result 912 states and 2894 transitions. [2021-10-08 17:14:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:25,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 17:14:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:25,521 INFO L225 Difference]: With dead ends: 912 [2021-10-08 17:14:25,521 INFO L226 Difference]: Without dead ends: 830 [2021-10-08 17:14:25,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:14:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-08 17:14:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 608. [2021-10-08 17:14:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.355848434925865) internal successors, (2037), 607 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2037 transitions. [2021-10-08 17:14:25,553 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2037 transitions. Word has length 22 [2021-10-08 17:14:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:25,553 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2037 transitions. [2021-10-08 17:14:25,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 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 17:14:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2037 transitions. [2021-10-08 17:14:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:25,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:25,557 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:25,572 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 17:14:25,770 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 17:14:25,770 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash 702575704, now seen corresponding path program 1 times [2021-10-08 17:14:25,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:25,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214430736] [2021-10-08 17:14:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:25,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:25,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:25,774 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 17:14:25,775 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 17:14:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:25,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:25,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:25,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:26,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:26,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214430736] [2021-10-08 17:14:26,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214430736] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:26,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:26,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 17:14:26,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390202553] [2021-10-08 17:14:26,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:14:26,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:14:26,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:26,111 INFO L87 Difference]: Start difference. First operand 608 states and 2037 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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 17:14:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:27,232 INFO L93 Difference]: Finished difference Result 2790 states and 9063 transitions. [2021-10-08 17:14:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:14:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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 22 [2021-10-08 17:14:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:27,259 INFO L225 Difference]: With dead ends: 2790 [2021-10-08 17:14:27,260 INFO L226 Difference]: Without dead ends: 2602 [2021-10-08 17:14:27,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 502.4ms TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:14:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-10-08 17:14:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1560. [2021-10-08 17:14:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1559 states have (on average 3.4470814624759463) internal successors, (5374), 1559 states have internal predecessors, (5374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 5374 transitions. [2021-10-08 17:14:27,369 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 5374 transitions. Word has length 22 [2021-10-08 17:14:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:27,369 INFO L470 AbstractCegarLoop]: Abstraction has 1560 states and 5374 transitions. [2021-10-08 17:14:27,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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 17:14:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 5374 transitions. [2021-10-08 17:14:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:14:27,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:27,377 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:27,397 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 17:14:27,590 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 17:14:27,590 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:27,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1078686202, now seen corresponding path program 1 times [2021-10-08 17:14:27,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:27,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453380028] [2021-10-08 17:14:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:27,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:27,595 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 17:14:27,598 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 17:14:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:27,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:27,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:27,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:27,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:27,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453380028] [2021-10-08 17:14:27,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453380028] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:27,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:27,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 17:14:27,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542549954] [2021-10-08 17:14:27,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:14:27,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:14:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:14:27,868 INFO L87 Difference]: Start difference. First operand 1560 states and 5374 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 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 17:14:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:27,922 INFO L93 Difference]: Finished difference Result 2784 states and 9492 transitions. [2021-10-08 17:14:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:14:27,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 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 22 [2021-10-08 17:14:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:27,948 INFO L225 Difference]: With dead ends: 2784 [2021-10-08 17:14:27,948 INFO L226 Difference]: Without dead ends: 2598 [2021-10-08 17:14:27,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:14:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2021-10-08 17:14:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2128. [2021-10-08 17:14:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 3.4997649271274094) internal successors, (7444), 2127 states have internal predecessors, (7444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 7444 transitions. [2021-10-08 17:14:28,051 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 7444 transitions. Word has length 22 [2021-10-08 17:14:28,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:28,051 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 7444 transitions. [2021-10-08 17:14:28,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 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 17:14:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 7444 transitions. [2021-10-08 17:14:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:14:28,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:28,060 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:28,071 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 17:14:28,262 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 17:14:28,262 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:28,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:28,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1084175344, now seen corresponding path program 1 times [2021-10-08 17:14:28,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:28,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094442552] [2021-10-08 17:14:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:28,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:28,267 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 17:14:28,271 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 17:14:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:28,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:14:28,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:28,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:28,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:28,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094442552] [2021-10-08 17:14:28,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094442552] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:28,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:28,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 17:14:28,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911914301] [2021-10-08 17:14:28,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:14:28,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:28,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:14:28,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:14:28,724 INFO L87 Difference]: Start difference. First operand 2128 states and 7444 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 17:14:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:30,416 INFO L93 Difference]: Finished difference Result 9444 states and 32921 transitions. [2021-10-08 17:14:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:14:30,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 17:14:30,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:30,501 INFO L225 Difference]: With dead ends: 9444 [2021-10-08 17:14:30,501 INFO L226 Difference]: Without dead ends: 9164 [2021-10-08 17:14:30,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 862.9ms TimeCoverageRelationStatistics Valid=452, Invalid=1188, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 17:14:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2021-10-08 17:14:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 2834. [2021-10-08 17:14:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2833 states have (on average 3.4994705259442287) internal successors, (9914), 2833 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 9914 transitions. [2021-10-08 17:14:30,780 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 9914 transitions. Word has length 26 [2021-10-08 17:14:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:30,781 INFO L470 AbstractCegarLoop]: Abstraction has 2834 states and 9914 transitions. [2021-10-08 17:14:30,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 17:14:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 9914 transitions. [2021-10-08 17:14:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:14:30,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:30,797 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:30,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:31,019 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 17:14:31,020 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:31,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1639701888, now seen corresponding path program 3 times [2021-10-08 17:14:31,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:31,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886069003] [2021-10-08 17:14:31,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:14:31,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:31,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:31,023 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 17:14:31,027 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 17:14:31,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:14:31,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:31,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:14:31,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:14:31,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:31,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:31,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886069003] [2021-10-08 17:14:31,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886069003] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:31,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:31,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-08 17:14:31,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406251445] [2021-10-08 17:14:31,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 17:14:31,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 17:14:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:14:31,513 INFO L87 Difference]: Start difference. First operand 2834 states and 9914 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:31,614 INFO L93 Difference]: Finished difference Result 5264 states and 18222 transitions. [2021-10-08 17:14:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:14:31,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:14:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:31,694 INFO L225 Difference]: With dead ends: 5264 [2021-10-08 17:14:31,694 INFO L226 Difference]: Without dead ends: 5010 [2021-10-08 17:14:31,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:14:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2021-10-08 17:14:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 3600. [2021-10-08 17:14:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3599 states have (on average 3.5248680188941375) internal successors, (12686), 3599 states have internal predecessors, (12686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 12686 transitions. [2021-10-08 17:14:31,849 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 12686 transitions. Word has length 26 [2021-10-08 17:14:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:31,849 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 12686 transitions. [2021-10-08 17:14:31,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 12686 transitions. [2021-10-08 17:14:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:14:31,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:31,863 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:31,877 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 17:14:32,078 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 17:14:32,078 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:32,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2020181595, now seen corresponding path program 2 times [2021-10-08 17:14:32,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:32,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334861550] [2021-10-08 17:14:32,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:14:32,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:32,082 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 17:14:32,083 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 17:14:32,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:32,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:32,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:14:32,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:14:32,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:14:32,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:32,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334861550] [2021-10-08 17:14:32,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334861550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:32,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:32,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 17:14:32,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893055949] [2021-10-08 17:14:32,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:14:32,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:14:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:14:32,473 INFO L87 Difference]: Start difference. First operand 3600 states and 12686 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 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 17:14:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:32,627 INFO L93 Difference]: Finished difference Result 6120 states and 21309 transitions. [2021-10-08 17:14:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:14:32,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 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 26 [2021-10-08 17:14:32,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:32,662 INFO L225 Difference]: With dead ends: 6120 [2021-10-08 17:14:32,663 INFO L226 Difference]: Without dead ends: 5854 [2021-10-08 17:14:32,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:14:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5854 states. [2021-10-08 17:14:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5854 to 4396. [2021-10-08 17:14:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.5419795221843002) internal successors, (15567), 4395 states have internal predecessors, (15567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 15567 transitions. [2021-10-08 17:14:32,881 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 15567 transitions. Word has length 26 [2021-10-08 17:14:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:32,882 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 15567 transitions. [2021-10-08 17:14:32,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 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 17:14:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 15567 transitions. [2021-10-08 17:14:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:14:32,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:32,901 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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 17:14:32,917 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 17:14:33,115 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 17:14:33,116 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:33,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1587130547, now seen corresponding path program 1 times [2021-10-08 17:14:33,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:33,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110513658] [2021-10-08 17:14:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:14:33,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:33,119 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 17:14:33,122 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 17:14:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:33,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:14:33,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:33,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:33,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:33,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110513658] [2021-10-08 17:14:33,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110513658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:33,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:33,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 17:14:33,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131952490] [2021-10-08 17:14:33,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:14:33,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:14:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:14:33,658 INFO L87 Difference]: Start difference. First operand 4396 states and 15567 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 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 17:14:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:36,108 INFO L93 Difference]: Finished difference Result 20462 states and 72886 transitions. [2021-10-08 17:14:36,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:14:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 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 17:14:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:36,215 INFO L225 Difference]: With dead ends: 20462 [2021-10-08 17:14:36,215 INFO L226 Difference]: Without dead ends: 20082 [2021-10-08 17:14:36,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1349.2ms TimeCoverageRelationStatistics Valid=660, Invalid=1890, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 17:14:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20082 states. [2021-10-08 17:14:36,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20082 to 5816. [2021-10-08 17:14:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5816 states, 5815 states have (on average 3.5325881341358554) internal successors, (20542), 5815 states have internal predecessors, (20542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 20542 transitions. [2021-10-08 17:14:36,795 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 20542 transitions. Word has length 30 [2021-10-08 17:14:36,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:36,795 INFO L470 AbstractCegarLoop]: Abstraction has 5816 states and 20542 transitions. [2021-10-08 17:14:36,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 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 17:14:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 20542 transitions. [2021-10-08 17:14:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:14:36,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:36,816 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:36,832 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 17:14:37,029 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 17:14:37,030 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:37,031 INFO L82 PathProgramCache]: Analyzing trace with hash 690342124, now seen corresponding path program 4 times [2021-10-08 17:14:37,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:37,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147431479] [2021-10-08 17:14:37,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:14:37,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:37,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:37,093 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 17:14:37,109 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 17:14:37,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:14:37,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:37,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:14:37,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:14:37,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:14:37,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:37,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147431479] [2021-10-08 17:14:37,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147431479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:37,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:37,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 17:14:37,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631324198] [2021-10-08 17:14:37,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:14:37,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:14:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:14:37,587 INFO L87 Difference]: Start difference. First operand 5816 states and 20542 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 17:14:37,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:37,710 INFO L93 Difference]: Finished difference Result 10176 states and 35596 transitions. [2021-10-08 17:14:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:14:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 17:14:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:37,798 INFO L225 Difference]: With dead ends: 10176 [2021-10-08 17:14:37,799 INFO L226 Difference]: Without dead ends: 9830 [2021-10-08 17:14:37,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:14:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9830 states. [2021-10-08 17:14:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9830 to 6862. [2021-10-08 17:14:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6862 states, 6861 states have (on average 3.5432152747412915) internal successors, (24310), 6861 states have internal predecessors, (24310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 24310 transitions. [2021-10-08 17:14:38,148 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 24310 transitions. Word has length 30 [2021-10-08 17:14:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:38,148 INFO L470 AbstractCegarLoop]: Abstraction has 6862 states and 24310 transitions. [2021-10-08 17:14:38,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 17:14:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 24310 transitions. [2021-10-08 17:14:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:14:38,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:38,178 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:38,196 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 17:14:38,395 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 17:14:38,395 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:38,396 INFO L82 PathProgramCache]: Analyzing trace with hash -577584644, now seen corresponding path program 3 times [2021-10-08 17:14:38,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:38,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226978467] [2021-10-08 17:14:38,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:14:38,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:38,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:38,399 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 17:14:38,432 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 17:14:38,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-08 17:14:38,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:38,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:14:38,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:14:38,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:14:39,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:39,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226978467] [2021-10-08 17:14:39,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226978467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:39,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:39,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 17:14:39,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515471122] [2021-10-08 17:14:39,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:14:39,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:39,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:14:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:14:39,109 INFO L87 Difference]: Start difference. First operand 6862 states and 24310 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 17:14:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:39,412 INFO L93 Difference]: Finished difference Result 13190 states and 46638 transitions. [2021-10-08 17:14:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:14:39,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 17:14:39,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:39,473 INFO L225 Difference]: With dead ends: 13190 [2021-10-08 17:14:39,473 INFO L226 Difference]: Without dead ends: 12744 [2021-10-08 17:14:39,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:14:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12744 states. [2021-10-08 17:14:39,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12744 to 9486. [2021-10-08 17:14:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9486 states, 9485 states have (on average 3.585239852398524) internal successors, (34006), 9485 states have internal predecessors, (34006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9486 states to 9486 states and 34006 transitions. [2021-10-08 17:14:40,085 INFO L78 Accepts]: Start accepts. Automaton has 9486 states and 34006 transitions. Word has length 30 [2021-10-08 17:14:40,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:40,089 INFO L470 AbstractCegarLoop]: Abstraction has 9486 states and 34006 transitions. [2021-10-08 17:14:40,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 17:14:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9486 states and 34006 transitions. [2021-10-08 17:14:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 17:14:40,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:40,168 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:40,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:40,382 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 17:14:40,383 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:40,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1312418724, now seen corresponding path program 2 times [2021-10-08 17:14:40,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:40,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786862356] [2021-10-08 17:14:40,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:14:40,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:40,435 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 17:14:40,480 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 17:14:40,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:40,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:40,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:14:40,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:40,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:14:41,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:41,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786862356] [2021-10-08 17:14:41,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786862356] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:41,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:41,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:14:41,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820730759] [2021-10-08 17:14:41,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:14:41,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:14:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:14:41,184 INFO L87 Difference]: Start difference. First operand 9486 states and 34006 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:45,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:45,050 INFO L93 Difference]: Finished difference Result 40010 states and 144489 transitions. [2021-10-08 17:14:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 17:14:45,050 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 17:14:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:45,382 INFO L225 Difference]: With dead ends: 40010 [2021-10-08 17:14:45,382 INFO L226 Difference]: Without dead ends: 39528 [2021-10-08 17:14:45,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 2234.8ms TimeCoverageRelationStatistics Valid=971, Invalid=3061, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 17:14:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39528 states. [2021-10-08 17:14:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39528 to 10128. [2021-10-08 17:14:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10128 states, 10127 states have (on average 3.5543596326651525) internal successors, (35995), 10127 states have internal predecessors, (35995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10128 states to 10128 states and 35995 transitions. [2021-10-08 17:14:46,505 INFO L78 Accepts]: Start accepts. Automaton has 10128 states and 35995 transitions. Word has length 34 [2021-10-08 17:14:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:46,505 INFO L470 AbstractCegarLoop]: Abstraction has 10128 states and 35995 transitions. [2021-10-08 17:14:46,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 10128 states and 35995 transitions. [2021-10-08 17:14:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 17:14:46,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:46,543 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:46,559 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 17:14:46,756 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 17:14:46,757 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:46,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1117258280, now seen corresponding path program 5 times [2021-10-08 17:14:46,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:46,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656644273] [2021-10-08 17:14:46,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:14:46,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:46,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:46,760 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 17:14:46,780 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 17:14:46,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-08 17:14:46,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:46,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:14:46,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:14:47,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:47,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:47,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656644273] [2021-10-08 17:14:47,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656644273] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:47,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-10-08 17:14:47,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828963946] [2021-10-08 17:14:47,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:14:47,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:14:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:14:47,746 INFO L87 Difference]: Start difference. First operand 10128 states and 35995 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 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 17:14:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:47,997 INFO L93 Difference]: Finished difference Result 19774 states and 70104 transitions. [2021-10-08 17:14:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:14:47,998 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 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 34 [2021-10-08 17:14:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:48,163 INFO L225 Difference]: With dead ends: 19774 [2021-10-08 17:14:48,164 INFO L226 Difference]: Without dead ends: 19236 [2021-10-08 17:14:48,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 277.1ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:14:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19236 states. [2021-10-08 17:14:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19236 to 13766. [2021-10-08 17:14:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13766 states, 13765 states have (on average 3.5864148201961497) internal successors, (49367), 13765 states have internal predecessors, (49367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13766 states to 13766 states and 49367 transitions. [2021-10-08 17:14:48,790 INFO L78 Accepts]: Start accepts. Automaton has 13766 states and 49367 transitions. Word has length 34 [2021-10-08 17:14:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:48,790 INFO L470 AbstractCegarLoop]: Abstraction has 13766 states and 49367 transitions. [2021-10-08 17:14:48,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 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 17:14:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 13766 states and 49367 transitions. [2021-10-08 17:14:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 17:14:48,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:48,831 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:48,845 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 17:14:49,045 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 17:14:49,045 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:49,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1557173469, now seen corresponding path program 4 times [2021-10-08 17:14:49,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:49,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130236548] [2021-10-08 17:14:49,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:14:49,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:49,049 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 17:14:49,066 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 17:14:49,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:14:49,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:49,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:14:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:14:49,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 17:14:49,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:49,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130236548] [2021-10-08 17:14:49,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130236548] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:49,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:49,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 17:14:49,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129958462] [2021-10-08 17:14:49,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:14:49,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:49,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:14:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:49,740 INFO L87 Difference]: Start difference. First operand 13766 states and 49367 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:50,029 INFO L93 Difference]: Finished difference Result 26734 states and 95606 transitions. [2021-10-08 17:14:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:14:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 17:14:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:50,399 INFO L225 Difference]: With dead ends: 26734 [2021-10-08 17:14:50,400 INFO L226 Difference]: Without dead ends: 26084 [2021-10-08 17:14:50,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:50,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26084 states. [2021-10-08 17:14:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26084 to 17978. [2021-10-08 17:14:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17978 states, 17977 states have (on average 3.6036046058852977) internal successors, (64782), 17977 states have internal predecessors, (64782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17978 states to 17978 states and 64782 transitions. [2021-10-08 17:14:51,172 INFO L78 Accepts]: Start accepts. Automaton has 17978 states and 64782 transitions. Word has length 34 [2021-10-08 17:14:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:51,172 INFO L470 AbstractCegarLoop]: Abstraction has 17978 states and 64782 transitions. [2021-10-08 17:14:51,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 17978 states and 64782 transitions. [2021-10-08 17:14:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 17:14:51,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:51,383 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:51,409 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 17:14:51,585 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 17:14:51,586 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:14:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:51,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1592711637, now seen corresponding path program 3 times [2021-10-08 17:14:51,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:51,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039694970] [2021-10-08 17:14:51,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:14:51,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:51,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:51,589 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 17:14:51,590 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 17:14:51,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 17:14:51,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:51,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:14:51,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:14:52,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:14:52,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:52,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039694970] [2021-10-08 17:14:52,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039694970] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:52,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:52,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:14:52,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347223690] [2021-10-08 17:14:52,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:14:52,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:14:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:14:52,381 INFO L87 Difference]: Start difference. First operand 17978 states and 64782 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:14:57,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:57,937 INFO L93 Difference]: Finished difference Result 76964 states and 281953 transitions. [2021-10-08 17:14:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-08 17:14:57,937 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 17:14:57,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:58,611 INFO L225 Difference]: With dead ends: 76964 [2021-10-08 17:14:58,612 INFO L226 Difference]: Without dead ends: 76380 [2021-10-08 17:14:58,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 3460.3ms TimeCoverageRelationStatistics Valid=1425, Invalid=4895, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 17:14:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76380 states. [2021-10-08 17:15:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76380 to 19286. [2021-10-08 17:15:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19286 states, 19285 states have (on average 3.595229452942702) internal successors, (69334), 19285 states have internal predecessors, (69334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19286 states to 19286 states and 69334 transitions. [2021-10-08 17:15:00,270 INFO L78 Accepts]: Start accepts. Automaton has 19286 states and 69334 transitions. Word has length 38 [2021-10-08 17:15:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:00,271 INFO L470 AbstractCegarLoop]: Abstraction has 19286 states and 69334 transitions. [2021-10-08 17:15:00,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 19286 states and 69334 transitions. [2021-10-08 17:15:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 17:15:00,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:00,306 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:00,317 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 17:15:00,506 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 17:15:00,507 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:00,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1489493060, now seen corresponding path program 6 times [2021-10-08 17:15:00,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:00,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970269582] [2021-10-08 17:15:00,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:15:00,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:00,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:00,510 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 17:15:00,511 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 17:15:00,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 17:15:00,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:00,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 17:15:00,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 17:15:01,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:15:01,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:01,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970269582] [2021-10-08 17:15:01,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970269582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:01,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:01,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 17 [2021-10-08 17:15:01,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249519839] [2021-10-08 17:15:01,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:15:01,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:01,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:15:01,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:15:01,905 INFO L87 Difference]: Start difference. First operand 19286 states and 69334 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:02,357 INFO L93 Difference]: Finished difference Result 37746 states and 135302 transitions. [2021-10-08 17:15:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:15:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 17:15:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:02,764 INFO L225 Difference]: With dead ends: 37746 [2021-10-08 17:15:02,765 INFO L226 Difference]: Without dead ends: 36992 [2021-10-08 17:15:02,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 399.1ms TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:15:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36992 states. [2021-10-08 17:15:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36992 to 24828. [2021-10-08 17:15:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24828 states, 24827 states have (on average 3.6082490836589196) internal successors, (89582), 24827 states have internal predecessors, (89582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24828 states to 24828 states and 89582 transitions. [2021-10-08 17:15:03,776 INFO L78 Accepts]: Start accepts. Automaton has 24828 states and 89582 transitions. Word has length 38 [2021-10-08 17:15:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:03,776 INFO L470 AbstractCegarLoop]: Abstraction has 24828 states and 89582 transitions. [2021-10-08 17:15:03,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 24828 states and 89582 transitions. [2021-10-08 17:15:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 17:15:03,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:03,822 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:03,837 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 17:15:04,036 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 17:15:04,037 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:04,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1049596162, now seen corresponding path program 5 times [2021-10-08 17:15:04,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:04,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108512219] [2021-10-08 17:15:04,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:15:04,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:04,040 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 17:15:04,049 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 17:15:04,302 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-08 17:15:04,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:04,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-08 17:15:04,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 17:15:04,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 56 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:05,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:05,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108512219] [2021-10-08 17:15:05,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108512219] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:05,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:05,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 18 [2021-10-08 17:15:05,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286373643] [2021-10-08 17:15:05,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:15:05,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:15:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:05,419 INFO L87 Difference]: Start difference. First operand 24828 states and 89582 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:05,923 INFO L93 Difference]: Finished difference Result 48920 states and 176101 transitions. [2021-10-08 17:15:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:15:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 17:15:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:06,451 INFO L225 Difference]: With dead ends: 48920 [2021-10-08 17:15:06,452 INFO L226 Difference]: Without dead ends: 48002 [2021-10-08 17:15:06,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 414.8ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:15:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48002 states. [2021-10-08 17:15:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48002 to 31548. [2021-10-08 17:15:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31548 states, 31547 states have (on average 3.619107997590896) internal successors, (114172), 31547 states have internal predecessors, (114172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31548 states to 31548 states and 114172 transitions. [2021-10-08 17:15:08,047 INFO L78 Accepts]: Start accepts. Automaton has 31548 states and 114172 transitions. Word has length 38 [2021-10-08 17:15:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:08,048 INFO L470 AbstractCegarLoop]: Abstraction has 31548 states and 114172 transitions. [2021-10-08 17:15:08,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 31548 states and 114172 transitions. [2021-10-08 17:15:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 17:15:08,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:08,170 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:08,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:08,371 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 17:15:08,371 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:08,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1991452617, now seen corresponding path program 2 times [2021-10-08 17:15:08,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:08,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639390903] [2021-10-08 17:15:08,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:15:08,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:08,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:08,379 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 17:15:08,420 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 17:15:08,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:08,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:08,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:15:08,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:08,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:09,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:09,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639390903] [2021-10-08 17:15:09,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639390903] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:09,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:09,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-08 17:15:09,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530399179] [2021-10-08 17:15:09,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 17:15:09,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 17:15:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:15:09,586 INFO L87 Difference]: Start difference. First operand 31548 states and 114172 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:39,218 INFO L93 Difference]: Finished difference Result 189576 states and 698600 transitions. [2021-10-08 17:15:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2021-10-08 17:15:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-08 17:15:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:40,804 INFO L225 Difference]: With dead ends: 189576 [2021-10-08 17:15:40,804 INFO L226 Difference]: Without dead ends: 188956 [2021-10-08 17:15:40,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17446 ImplicationChecksByTransitivity, 21074.5ms TimeCoverageRelationStatistics Valid=9351, Invalid=34959, Unknown=0, NotChecked=0, Total=44310 [2021-10-08 17:15:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188956 states. [2021-10-08 17:15:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188956 to 114682. [2021-10-08 17:15:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114682 states, 114681 states have (on average 3.669605252831768) internal successors, (420834), 114681 states have internal predecessors, (420834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114682 states to 114682 states and 420834 transitions. [2021-10-08 17:15:48,549 INFO L78 Accepts]: Start accepts. Automaton has 114682 states and 420834 transitions. Word has length 40 [2021-10-08 17:15:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:48,549 INFO L470 AbstractCegarLoop]: Abstraction has 114682 states and 420834 transitions. [2021-10-08 17:15:48,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 114682 states and 420834 transitions. [2021-10-08 17:15:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 17:15:48,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:48,659 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:15:48,670 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 17:15:48,859 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 17:15:48,859 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:15:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:48,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1255326768, now seen corresponding path program 7 times [2021-10-08 17:15:48,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:48,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075446655] [2021-10-08 17:15:48,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:15:48,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:48,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:48,863 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 17:15:48,864 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 17:15:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:15:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:15:49,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:15:49,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:15:50,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:50,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075446655] [2021-10-08 17:15:50,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075446655] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:50,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:50,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 17:15:50,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652884234] [2021-10-08 17:15:50,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:15:50,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:15:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:15:50,144 INFO L87 Difference]: Start difference. First operand 114682 states and 420834 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:15:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:52,736 INFO L93 Difference]: Finished difference Result 184980 states and 677111 transitions. [2021-10-08 17:15:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 17:15:52,737 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-08 17:15:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:54,482 INFO L225 Difference]: With dead ends: 184980 [2021-10-08 17:15:54,482 INFO L226 Difference]: Without dead ends: 181806 [2021-10-08 17:15:54,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 206.6ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:15:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181806 states. [2021-10-08 17:15:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181806 to 124856. [2021-10-08 17:16:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124856 states, 124855 states have (on average 3.6716190781306315) internal successors, (458420), 124855 states have internal predecessors, (458420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124856 states to 124856 states and 458420 transitions. [2021-10-08 17:16:01,359 INFO L78 Accepts]: Start accepts. Automaton has 124856 states and 458420 transitions. Word has length 42 [2021-10-08 17:16:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:01,359 INFO L470 AbstractCegarLoop]: Abstraction has 124856 states and 458420 transitions. [2021-10-08 17:16:01,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 124856 states and 458420 transitions. [2021-10-08 17:16:02,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 17:16:02,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:02,171 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:02,185 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 17:16:02,385 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 17:16:02,387 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:02,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1006387105, now seen corresponding path program 6 times [2021-10-08 17:16:02,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:02,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578702445] [2021-10-08 17:16:02,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:16:02,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:02,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:02,390 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 17:16:02,391 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 17:16:02,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-08 17:16:02,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:02,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 17:16:02,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 17:16:02,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 72 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:03,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:03,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578702445] [2021-10-08 17:16:03,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578702445] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:03,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:03,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 21 [2021-10-08 17:16:03,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748930605] [2021-10-08 17:16:03,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:16:03,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:16:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:16:03,849 INFO L87 Difference]: Start difference. First operand 124856 states and 458420 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:06,527 INFO L93 Difference]: Finished difference Result 196048 states and 717785 transitions. [2021-10-08 17:16:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 17:16:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-08 17:16:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:08,568 INFO L225 Difference]: With dead ends: 196048 [2021-10-08 17:16:08,569 INFO L226 Difference]: Without dead ends: 192846 [2021-10-08 17:16:08,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 567.4ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:16:08,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192846 states. [2021-10-08 17:16:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192846 to 135168. [2021-10-08 17:16:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135168 states, 135167 states have (on average 3.6731154793699647) internal successors, (496484), 135167 states have internal predecessors, (496484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135168 states to 135168 states and 496484 transitions. [2021-10-08 17:16:16,327 INFO L78 Accepts]: Start accepts. Automaton has 135168 states and 496484 transitions. Word has length 42 [2021-10-08 17:16:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:16,327 INFO L470 AbstractCegarLoop]: Abstraction has 135168 states and 496484 transitions. [2021-10-08 17:16:16,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:16:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 135168 states and 496484 transitions. [2021-10-08 17:16:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 17:16:17,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:17,127 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:17,143 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 17:16:17,341 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 17:16:17,341 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:16:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:17,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1631084529, now seen corresponding path program 2 times [2021-10-08 17:16:17,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:17,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332827166] [2021-10-08 17:16:17,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:16:17,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:17,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:17,345 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 17:16:17,346 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 17:16:17,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:16:17,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:17,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:16:17,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:17,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:18,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:18,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332827166] [2021-10-08 17:16:18,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332827166] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:18,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:18,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-10-08 17:16:18,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434775498] [2021-10-08 17:16:18,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 17:16:18,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:18,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 17:16:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2021-10-08 17:16:18,635 INFO L87 Difference]: Start difference. First operand 135168 states and 496484 transitions. Second operand has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:02,580 INFO L93 Difference]: Finished difference Result 571016 states and 2133113 transitions. [2021-10-08 17:17:02,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2021-10-08 17:17:02,581 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-08 17:17:02,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:09,275 INFO L225 Difference]: With dead ends: 571016 [2021-10-08 17:17:09,275 INFO L226 Difference]: Without dead ends: 570142 [2021-10-08 17:17:09,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22699 ImplicationChecksByTransitivity, 27202.4ms TimeCoverageRelationStatistics Valid=11657, Invalid=45225, Unknown=0, NotChecked=0, Total=56882 [2021-10-08 17:17:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570142 states. [2021-10-08 17:17:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570142 to 126378. [2021-10-08 17:17:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126378 states, 126377 states have (on average 3.6481242631174977) internal successors, (461039), 126377 states have internal predecessors, (461039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126378 states to 126378 states and 461039 transitions. [2021-10-08 17:17:28,148 INFO L78 Accepts]: Start accepts. Automaton has 126378 states and 461039 transitions. Word has length 44 [2021-10-08 17:17:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:28,148 INFO L470 AbstractCegarLoop]: Abstraction has 126378 states and 461039 transitions. [2021-10-08 17:17:28,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 126378 states and 461039 transitions. [2021-10-08 17:17:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-08 17:17:28,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:28,296 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:28,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:28,510 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 17:17:28,510 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash 912135580, now seen corresponding path program 8 times [2021-10-08 17:17:28,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:28,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414234492] [2021-10-08 17:17:28,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:17:28,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:28,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:28,514 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 17:17:28,520 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 17:17:28,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:17:28,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:28,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 17:17:28,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 17:17:29,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 17:17:29,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:29,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414234492] [2021-10-08 17:17:29,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414234492] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:29,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:29,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:17:29,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147873179] [2021-10-08 17:17:29,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:17:29,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:17:29,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:17:29,463 INFO L87 Difference]: Start difference. First operand 126378 states and 461039 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:31,997 INFO L93 Difference]: Finished difference Result 189152 states and 689166 transitions. [2021-10-08 17:17:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:17:31,998 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-08 17:17:31,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:33,246 INFO L225 Difference]: With dead ends: 189152 [2021-10-08 17:17:33,246 INFO L226 Difference]: Without dead ends: 186090 [2021-10-08 17:17:33,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 255.4ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:17:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186090 states. [2021-10-08 17:17:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186090 to 122712. [2021-10-08 17:17:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122712 states, 122711 states have (on average 3.6587591984418673) internal successors, (448970), 122711 states have internal predecessors, (448970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122712 states to 122712 states and 448970 transitions. [2021-10-08 17:17:40,454 INFO L78 Accepts]: Start accepts. Automaton has 122712 states and 448970 transitions. Word has length 46 [2021-10-08 17:17:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:40,454 INFO L470 AbstractCegarLoop]: Abstraction has 122712 states and 448970 transitions. [2021-10-08 17:17:40,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 122712 states and 448970 transitions. [2021-10-08 17:17:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-08 17:17:40,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:40,563 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:17:40,574 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 17:17:40,764 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 17:17:40,764 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:40,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1499461888, now seen corresponding path program 7 times [2021-10-08 17:17:40,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:40,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979813603] [2021-10-08 17:17:40,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:17:40,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:40,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:40,768 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 17:17:40,769 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 17:17:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:17:41,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 17:17:41,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 17:17:41,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 17:17:41,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:41,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979813603] [2021-10-08 17:17:41,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979813603] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:41,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:41,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:17:41,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263129279] [2021-10-08 17:17:41,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:17:41,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:41,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:17:41,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:17:41,760 INFO L87 Difference]: Start difference. First operand 122712 states and 448970 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:44,423 INFO L93 Difference]: Finished difference Result 189140 states and 695787 transitions. [2021-10-08 17:17:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:17:44,424 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-08 17:17:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:46,292 INFO L225 Difference]: With dead ends: 189140 [2021-10-08 17:17:46,292 INFO L226 Difference]: Without dead ends: 186338 [2021-10-08 17:17:46,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 282.0ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:17:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186338 states. [2021-10-08 17:17:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186338 to 134208. [2021-10-08 17:17:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134208 states, 134207 states have (on average 3.702608656776472) internal successors, (496916), 134207 states have internal predecessors, (496916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134208 states to 134208 states and 496916 transitions. [2021-10-08 17:17:53,929 INFO L78 Accepts]: Start accepts. Automaton has 134208 states and 496916 transitions. Word has length 46 [2021-10-08 17:17:53,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:53,930 INFO L470 AbstractCegarLoop]: Abstraction has 134208 states and 496916 transitions. [2021-10-08 17:17:53,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:17:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 134208 states and 496916 transitions. [2021-10-08 17:17:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-08 17:17:54,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:54,169 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 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 17:17:54,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-08 17:17:54,384 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 17:17:54,385 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:17:54,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:54,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1624402964, now seen corresponding path program 4 times [2021-10-08 17:17:54,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:54,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059541538] [2021-10-08 17:17:54,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:17:54,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:54,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:54,388 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 17:17:54,423 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 17:17:54,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:17:54,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:54,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:17:54,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:55,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:56,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:56,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059541538] [2021-10-08 17:17:56,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059541538] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:56,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:56,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-10-08 17:17:56,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452743113] [2021-10-08 17:17:56,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-08 17:17:56,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:56,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-08 17:17:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:17:56,291 INFO L87 Difference]: Start difference. First operand 134208 states and 496916 transitions. Second operand has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:18:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:47,320 INFO L93 Difference]: Finished difference Result 657016 states and 2442990 transitions. [2021-10-08 17:18:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2021-10-08 17:18:47,321 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-08 17:18:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:55,109 INFO L225 Difference]: With dead ends: 657016 [2021-10-08 17:18:55,110 INFO L226 Difference]: Without dead ends: 655880 [2021-10-08 17:18:55,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26594 ImplicationChecksByTransitivity, 33565.6ms TimeCoverageRelationStatistics Valid=13536, Invalid=52770, Unknown=0, NotChecked=0, Total=66306 [2021-10-08 17:18:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655880 states. [2021-10-08 17:19:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655880 to 102872. [2021-10-08 17:19:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102872 states, 102871 states have (on average 3.659301455220616) internal successors, (376436), 102871 states have internal predecessors, (376436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102872 states to 102872 states and 376436 transitions. [2021-10-08 17:19:16,125 INFO L78 Accepts]: Start accepts. Automaton has 102872 states and 376436 transitions. Word has length 48 [2021-10-08 17:19:16,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:16,126 INFO L470 AbstractCegarLoop]: Abstraction has 102872 states and 376436 transitions. [2021-10-08 17:19:16,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:16,126 INFO L276 IsEmpty]: Start isEmpty. Operand 102872 states and 376436 transitions. [2021-10-08 17:19:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-08 17:19:16,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:16,243 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:16,255 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 17:19:16,444 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 17:19:16,444 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:16,445 INFO L82 PathProgramCache]: Analyzing trace with hash -813223800, now seen corresponding path program 9 times [2021-10-08 17:19:16,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:16,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783682214] [2021-10-08 17:19:16,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:19:16,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:16,448 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 17:19:16,449 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 17:19:16,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-08 17:19:16,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:16,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 17:19:16,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-08 17:19:17,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 115 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:18,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:18,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783682214] [2021-10-08 17:19:18,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783682214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:18,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:18,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 27 [2021-10-08 17:19:18,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953245123] [2021-10-08 17:19:18,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 17:19:18,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 17:19:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:19:18,452 INFO L87 Difference]: Start difference. First operand 102872 states and 376436 transitions. Second operand has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:21,162 INFO L93 Difference]: Finished difference Result 186764 states and 686009 transitions. [2021-10-08 17:19:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:19:21,163 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-08 17:19:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:23,101 INFO L225 Difference]: With dead ends: 186764 [2021-10-08 17:19:23,101 INFO L226 Difference]: Without dead ends: 184250 [2021-10-08 17:19:23,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 940.9ms TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:19:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184250 states. [2021-10-08 17:19:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184250 to 131482. [2021-10-08 17:19:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131482 states, 131481 states have (on average 3.6943512750891765) internal successors, (485737), 131481 states have internal predecessors, (485737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131482 states to 131482 states and 485737 transitions. [2021-10-08 17:19:31,337 INFO L78 Accepts]: Start accepts. Automaton has 131482 states and 485737 transitions. Word has length 50 [2021-10-08 17:19:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:31,341 INFO L470 AbstractCegarLoop]: Abstraction has 131482 states and 485737 transitions. [2021-10-08 17:19:31,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 131482 states and 485737 transitions. [2021-10-08 17:19:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-08 17:19:31,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:31,494 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:31,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:31,708 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 17:19:31,708 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1100908769, now seen corresponding path program 8 times [2021-10-08 17:19:31,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:31,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881114677] [2021-10-08 17:19:31,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:19:31,710 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:31,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:31,713 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 17:19:31,748 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 17:19:32,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:19:32,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:32,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:19:32,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-08 17:19:32,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-08 17:19:33,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:33,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881114677] [2021-10-08 17:19:33,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881114677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:33,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:33,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:19:33,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304537712] [2021-10-08 17:19:33,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:19:33,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:19:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:19:33,014 INFO L87 Difference]: Start difference. First operand 131482 states and 485737 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:37,168 INFO L93 Difference]: Finished difference Result 239306 states and 886668 transitions. [2021-10-08 17:19:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:19:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-08 17:19:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:39,816 INFO L225 Difference]: With dead ends: 239306 [2021-10-08 17:19:39,817 INFO L226 Difference]: Without dead ends: 236392 [2021-10-08 17:19:39,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 383.4ms TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:19:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236392 states. [2021-10-08 17:19:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236392 to 160222. [2021-10-08 17:19:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160222 states, 160221 states have (on average 3.7143570443325156) internal successors, (595118), 160221 states have internal predecessors, (595118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160222 states to 160222 states and 595118 transitions. [2021-10-08 17:19:49,561 INFO L78 Accepts]: Start accepts. Automaton has 160222 states and 595118 transitions. Word has length 50 [2021-10-08 17:19:49,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:49,562 INFO L470 AbstractCegarLoop]: Abstraction has 160222 states and 595118 transitions. [2021-10-08 17:19:49,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:19:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 160222 states and 595118 transitions. [2021-10-08 17:19:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-08 17:19:49,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:49,728 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:49,744 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 17:19:49,942 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 17:19:49,943 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:19:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash 990638459, now seen corresponding path program 5 times [2021-10-08 17:19:49,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:49,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993087635] [2021-10-08 17:19:49,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:19:49,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:49,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:49,947 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 17:19:49,949 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 17:19:50,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-08 17:19:50,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:50,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:19:50,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 228 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:19:50,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 228 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:19:51,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:51,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993087635] [2021-10-08 17:19:51,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993087635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:51,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:51,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-10-08 17:19:51,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721556106] [2021-10-08 17:19:51,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 17:19:51,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 17:19:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 17:19:51,597 INFO L87 Difference]: Start difference. First operand 160222 states and 595118 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:20:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:50,723 INFO L93 Difference]: Finished difference Result 860474 states and 3210878 transitions. [2021-10-08 17:20:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2021-10-08 17:20:50,723 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-08 17:20:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:06,000 INFO L225 Difference]: With dead ends: 860474 [2021-10-08 17:21:06,009 INFO L226 Difference]: Without dead ends: 859074 [2021-10-08 17:21:06,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31402 ImplicationChecksByTransitivity, 38092.5ms TimeCoverageRelationStatistics Valid=15725, Invalid=62395, Unknown=0, NotChecked=0, Total=78120 [2021-10-08 17:21:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859074 states. [2021-10-08 17:21:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859074 to 120646. [2021-10-08 17:21:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120646 states, 120645 states have (on average 3.710837581333665) internal successors, (447694), 120645 states have internal predecessors, (447694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120646 states to 120646 states and 447694 transitions. [2021-10-08 17:21:39,731 INFO L78 Accepts]: Start accepts. Automaton has 120646 states and 447694 transitions. Word has length 52 [2021-10-08 17:21:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:39,731 INFO L470 AbstractCegarLoop]: Abstraction has 120646 states and 447694 transitions. [2021-10-08 17:21:39,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 120646 states and 447694 transitions. [2021-10-08 17:21:39,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-08 17:21:39,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:39,818 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:21:39,830 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 17:21:40,019 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 17:21:40,019 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:21:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash 431191284, now seen corresponding path program 10 times [2021-10-08 17:21:40,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:40,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214809351] [2021-10-08 17:21:40,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:21:40,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:40,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:40,027 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 17:21:40,065 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 17:21:40,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:21:40,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:40,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:21:40,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 17:21:40,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 17:21:41,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:41,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214809351] [2021-10-08 17:21:41,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214809351] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:41,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:41,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 17:21:41,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304843105] [2021-10-08 17:21:41,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:21:41,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:21:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:21:41,859 INFO L87 Difference]: Start difference. First operand 120646 states and 447694 transitions. Second operand has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:45,542 INFO L93 Difference]: Finished difference Result 227722 states and 846698 transitions. [2021-10-08 17:21:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:21:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-08 17:21:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:48,816 INFO L225 Difference]: With dead ends: 227722 [2021-10-08 17:21:48,816 INFO L226 Difference]: Without dead ends: 225096 [2021-10-08 17:21:48,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 461.1ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:21:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225096 states. [2021-10-08 17:21:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225096 to 150796. [2021-10-08 17:21:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150796 states, 150795 states have (on average 3.7296462084286612) internal successors, (562412), 150795 states have internal predecessors, (562412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150796 states to 150796 states and 562412 transitions. [2021-10-08 17:21:59,625 INFO L78 Accepts]: Start accepts. Automaton has 150796 states and 562412 transitions. Word has length 54 [2021-10-08 17:21:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:59,625 INFO L470 AbstractCegarLoop]: Abstraction has 150796 states and 562412 transitions. [2021-10-08 17:21:59,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:21:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 150796 states and 562412 transitions. [2021-10-08 17:22:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-08 17:22:00,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:00,406 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:00,424 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 17:22:00,619 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 17:22:00,620 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -685973502, now seen corresponding path program 9 times [2021-10-08 17:22:00,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:00,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690456561] [2021-10-08 17:22:00,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:22:00,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:00,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:00,623 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 17:22:00,624 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 17:22:01,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-08 17:22:01,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:01,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 17:22:01,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 17:22:01,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 132 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:02,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:02,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690456561] [2021-10-08 17:22:02,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690456561] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:02,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:02,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 30 [2021-10-08 17:22:02,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872080504] [2021-10-08 17:22:02,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 17:22:02,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 17:22:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:22:02,941 INFO L87 Difference]: Start difference. First operand 150796 states and 562412 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:08,620 INFO L93 Difference]: Finished difference Result 289064 states and 1079815 transitions. [2021-10-08 17:22:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:22:08,622 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-08 17:22:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:12,660 INFO L225 Difference]: With dead ends: 289064 [2021-10-08 17:22:12,660 INFO L226 Difference]: Without dead ends: 285946 [2021-10-08 17:22:12,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1090.6ms TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:22:12,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285946 states. [2021-10-08 17:22:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285946 to 185660. [2021-10-08 17:22:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185660 states, 185659 states have (on average 3.74236638137661) internal successors, (694804), 185659 states have internal predecessors, (694804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185660 states to 185660 states and 694804 transitions. [2021-10-08 17:22:24,915 INFO L78 Accepts]: Start accepts. Automaton has 185660 states and 694804 transitions. Word has length 54 [2021-10-08 17:22:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:24,915 INFO L470 AbstractCegarLoop]: Abstraction has 185660 states and 694804 transitions. [2021-10-08 17:22:24,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:22:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 185660 states and 694804 transitions. [2021-10-08 17:22:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-08 17:22:25,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:25,055 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:25,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-10-08 17:22:25,271 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 17:22:25,272 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:22:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:25,273 INFO L82 PathProgramCache]: Analyzing trace with hash 735402954, now seen corresponding path program 6 times [2021-10-08 17:22:25,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:25,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622698580] [2021-10-08 17:22:25,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:22:25,275 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:25,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:25,276 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 17:22:25,278 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 17:22:25,889 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-10-08 17:22:25,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:25,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:22:25,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 2 proven. 278 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:22:26,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 2 proven. 278 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:22:27,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:27,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622698580] [2021-10-08 17:22:27,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622698580] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:27,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:27,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-10-08 17:22:27,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796769532] [2021-10-08 17:22:27,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 17:22:27,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 17:22:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 17:22:27,262 INFO L87 Difference]: Start difference. First operand 185660 states and 694804 transitions. Second operand has 38 states, 38 states have (on average 2.763157894736842) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:23:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:23:44,814 INFO L93 Difference]: Finished difference Result 1236568 states and 4618178 transitions. [2021-10-08 17:23:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2021-10-08 17:23:44,815 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.763157894736842) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-08 17:23:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2021-10-08 17:24:03,872 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 17:24:03,873 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:24:04,941 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 17:24:05,076 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-08 17:24:05,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown [2021-10-08 17:24:08,915 INFO L225 Difference]: With dead ends: 1236568 [2021-10-08 17:24:08,915 INFO L226 Difference]: Without dead ends: 1234904 [2021-10-08 17:24:08,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37574 ImplicationChecksByTransitivity, 47582.3ms TimeCoverageRelationStatistics Valid=18300, Invalid=74420, Unknown=0, NotChecked=0, Total=92720 [2021-10-08 17:24:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234904 states. [2021-10-08 17:24:12,655 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:24:12,655 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-08 17:24:12,657 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:24:12,657 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:24:12,657 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:24:12,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:24:12,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:24:12,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:24:12,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:24:12,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:24:12,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 17:24:12,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 17:24:12,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 17:24:12,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 17:24:12,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:24:12,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:24:12,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:24:12,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 17:24:12,681 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:24:12,681 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:24:12,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:24:12 BasicIcfg [2021-10-08 17:24:12,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:24:12,688 INFO L168 Benchmark]: Toolchain (without parser) took 607870.28 ms. Allocated memory was 166.7 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 140.7 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.5 GB. Max. memory is 8.0 GB. [2021-10-08 17:24:12,688 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 166.7 MB. Free memory was 138.2 MB in the beginning and 138.1 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:24:12,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.00 ms. Allocated memory is still 166.7 MB. Free memory was 140.3 MB in the beginning and 129.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:24:12,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.98 ms. Allocated memory is still 166.7 MB. Free memory was 129.3 MB in the beginning and 127.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:24:12,690 INFO L168 Benchmark]: Boogie Preprocessor took 42.99 ms. Allocated memory is still 166.7 MB. Free memory was 127.5 MB in the beginning and 126.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:24:12,694 INFO L168 Benchmark]: RCFGBuilder took 983.33 ms. Allocated memory is still 166.7 MB. Free memory was 126.0 MB in the beginning and 139.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:24:12,698 INFO L168 Benchmark]: TraceAbstraction took 606470.29 ms. Allocated memory was 166.7 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 139.3 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.5 GB. Max. memory is 8.0 GB. [2021-10-08 17:24:12,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 166.7 MB. Free memory was 138.2 MB in the beginning and 138.1 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.00 ms. Allocated memory is still 166.7 MB. Free memory was 140.3 MB in the beginning and 129.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.98 ms. Allocated memory is still 166.7 MB. Free memory was 129.3 MB in the beginning and 127.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.99 ms. Allocated memory is still 166.7 MB. Free memory was 127.5 MB in the beginning and 126.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 983.33 ms. Allocated memory is still 166.7 MB. Free memory was 126.0 MB in the beginning and 139.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 606470.29 ms. Allocated memory was 166.7 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 139.3 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11332.8ms, 115 PlacesBefore, 47 PlacesAfterwards, 112 TransitionsBefore, 41 TransitionsAfterwards, 1322 CoEnabledTransitionPairs, 8 FixpointIterations, 57 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 103 TotalNumberOfCompositions, 3224 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2439, positive: 2347, positive conditional: 0, positive unconditional: 2347, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 953, positive: 928, positive conditional: 0, positive unconditional: 928, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 953, positive: 922, positive conditional: 0, positive unconditional: 922, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 242, positive: 152, positive conditional: 0, positive unconditional: 152, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2439, positive: 1419, positive conditional: 0, positive unconditional: 1419, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 953, unknown conditional: 0, unknown unconditional: 953] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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: 106]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: 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: 99]: 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: 100]: 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 7 procedures, 131 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 606311.2ms, OverallIterations: 40, TraceHistogramMax: 15, EmptinessCheckTime: 4370.5ms, AutomataDifference: 383115.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11424.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3327 SDtfs, 70231 SDslu, 27034 SDs, 0 SdLazy, 15669 SolverSat, 25813 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39641.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3623 GetRequests, 1795 SyntacticMatches, 0 SemanticMatches, 1828 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140359 ImplicationChecksByTransitivity, 182010.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=185660occurred in iteration=39, InterpolantAutomatonStates: 1634, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 165027.0ms AutomataMinimizationTime, 40 MinimizatonAttempts, 2503536 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 456.9ms SsaConstructionTime, 3348.9ms SatisfiabilityAnalysisTime, 23326.7ms InterpolantComputationTime, 1193 NumberOfCodeBlocks, 1193 NumberOfCodeBlocksAsserted, 135 NumberOfCheckSat, 2306 ConstructedInterpolants, 6 QuantifiedInterpolants, 8898 SizeOfPredicates, 308 NumberOfNonLiveVariables, 4671 ConjunctsInSsa, 601 ConjunctsInUnsatCore, 80 InterpolantComputations, 22 PerfectInterpolantSequences, 1007/6292 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 !SESSION 2021-10-08 17:14:01.054 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.12 java.vendor=Eclipse Foundation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_GB Framework arguments: -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c Command-line arguments: -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c !ENTRY org.eclipse.osgi 4 0 2021-10-08 17:24:12.759 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1703bf8/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1703bf8/.metadata/.log.