/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 21:39:29,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 21:39:29,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 21:39:29,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 21:39:29,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 21:39:29,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 21:39:29,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 21:39:29,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 21:39:29,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 21:39:29,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 21:39:29,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 21:39:29,482 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 21:39:29,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 21:39:29,483 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 21:39:29,483 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 21:39:29,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 21:39:29,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 21:39:29,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 21:39:29,484 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 21:39:29,484 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 21:39:29,484 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 21:39:29,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 21:39:29,484 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 21:39:29,485 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 21:39:29,485 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 21:39:29,485 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 21:39:29,485 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 21:39:29,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 21:39:29,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 21:39:29,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 21:39:29,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:39:29,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 21:39:29,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 21:39:29,487 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 21:39:29,487 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 21:39:29,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 21:39:29,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 21:39:29,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 21:39:29,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 21:39:29,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 21:39:29,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 21:39:29,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 21:39:29,927 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 21:39:29,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-10-13 21:39:30,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c424c059/dad3c0358fd84e6ab927f55883c4e241/FLAGdbfa65a9f [2021-10-13 21:39:30,681 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 21:39:30,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-10-13 21:39:30,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c424c059/dad3c0358fd84e6ab927f55883c4e241/FLAGdbfa65a9f [2021-10-13 21:39:31,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c424c059/dad3c0358fd84e6ab927f55883c4e241 [2021-10-13 21:39:31,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 21:39:31,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 21:39:31,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 21:39:31,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 21:39:31,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 21:39:31,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf0912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31, skipping insertion in model container [2021-10-13 21:39:31,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 21:39:31,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:39:31,316 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[2563,2576] [2021-10-13 21:39:31,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:39:31,337 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 21:39:31,369 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[2563,2576] [2021-10-13 21:39:31,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:39:31,391 INFO L208 MainTranslator]: Completed translation [2021-10-13 21:39:31,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31 WrapperNode [2021-10-13 21:39:31,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 21:39:31,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 21:39:31,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 21:39:31,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 21:39:31,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 21:39:31,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 21:39:31,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 21:39:31,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 21:39:31,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 21:39:31,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 21:39:31,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 21:39:31,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 21:39:31,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (1/1) ... [2021-10-13 21:39:31,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:39:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:39:31,614 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) [2021-10-13 21:39:31,631 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 [2021-10-13 21:39:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 21:39:31,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 21:39:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 21:39:31,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 21:39:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 21:39:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 21:39:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 21:39:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 21:39:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 21:39:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 21:39:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 21:39:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 21:39:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 21:39:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 21:39:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 21:39:31,693 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 21:39:32,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 21:39:32,289 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-13 21:39:32,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:32 BoogieIcfgContainer [2021-10-13 21:39:32,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 21:39:32,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 21:39:32,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 21:39:32,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 21:39:32,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:39:31" (1/3) ... [2021-10-13 21:39:32,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc42c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:32, skipping insertion in model container [2021-10-13 21:39:32,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:31" (2/3) ... [2021-10-13 21:39:32,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc42c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:32, skipping insertion in model container [2021-10-13 21:39:32,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:32" (3/3) ... [2021-10-13 21:39:32,307 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2021-10-13 21:39:32,314 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 21:39:32,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-13 21:39:32,315 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 21:39:32,402 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,402 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,402 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,403 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,406 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,406 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,407 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,407 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,407 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,407 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,408 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,411 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,413 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,417 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,417 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,418 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,418 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,418 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,419 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,421 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,421 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,423 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,424 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,426 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,426 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,426 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,427 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,427 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,427 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,427 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,427 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,428 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,428 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,428 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,429 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,431 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,431 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,432 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,433 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,433 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,433 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,433 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,434 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,434 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,435 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,435 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,435 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,435 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,436 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,437 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,437 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,438 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,438 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,446 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,456 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,456 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,457 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,457 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,461 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,465 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,466 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,466 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,467 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:39:32,480 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 21:39:32,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 21:39:32,561 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 [2021-10-13 21:39:32,562 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-13 21:39:32,595 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 21:39:32,608 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 170 transitions, 372 flow [2021-10-13 21:39:32,612 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 170 transitions, 372 flow [2021-10-13 21:39:32,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 177 places, 170 transitions, 372 flow [2021-10-13 21:39:32,714 INFO L129 PetriNetUnfolder]: 6/166 cut-off events. [2021-10-13 21:39:32,715 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 21:39:32,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 166 events. 6/166 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2021-10-13 21:39:32,730 INFO L116 LiptonReduction]: Number of co-enabled transitions 4576 [2021-10-13 21:39:47,220 INFO L131 LiptonReduction]: Checked pairs total: 15729 [2021-10-13 21:39:47,220 INFO L133 LiptonReduction]: Total number of compositions: 176 [2021-10-13 21:39:47,230 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 61 transitions, 154 flow [2021-10-13 21:39:47,512 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5215 states, 5197 states have (on average 4.465460842793919) internal successors, (23207), 5214 states have internal predecessors, (23207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 5215 states, 5197 states have (on average 4.465460842793919) internal successors, (23207), 5214 states have internal predecessors, (23207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 21:39:47,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:47,546 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 21:39:47,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:39:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:47,553 INFO L82 PathProgramCache]: Analyzing trace with hash 625, now seen corresponding path program 1 times [2021-10-13 21:39:47,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:47,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645026288] [2021-10-13 21:39:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:47,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:47,571 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) [2021-10-13 21:39:47,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 21:39:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:47,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 21:39:47,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:47,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:47,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:47,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645026288] [2021-10-13 21:39:47,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645026288] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:47,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:47,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 21:39:47,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218036593] [2021-10-13 21:39:47,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 21:39:47,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:47,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 21:39:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 21:39:47,696 INFO L87 Difference]: Start difference. First operand has 5215 states, 5197 states have (on average 4.465460842793919) internal successors, (23207), 5214 states have internal predecessors, (23207), 0 states have call successors, (0), 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) [2021-10-13 21:39:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:47,833 INFO L93 Difference]: Finished difference Result 5212 states and 19744 transitions. [2021-10-13 21:39:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 21:39:47,835 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 [2021-10-13 21:39:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:47,919 INFO L225 Difference]: With dead ends: 5212 [2021-10-13 21:39:47,920 INFO L226 Difference]: Without dead ends: 5212 [2021-10-13 21:39:47,921 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 [2021-10-13 21:39:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2021-10-13 21:39:48,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 5212. [2021-10-13 21:39:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 5197 states have (on average 3.7991148739657494) internal successors, (19744), 5211 states have internal predecessors, (19744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 19744 transitions. [2021-10-13 21:39:48,438 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 19744 transitions. Word has length 1 [2021-10-13 21:39:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:48,438 INFO L470 AbstractCegarLoop]: Abstraction has 5212 states and 19744 transitions. [2021-10-13 21:39:48,439 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) [2021-10-13 21:39:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 19744 transitions. [2021-10-13 21:39:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:39:48,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:48,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:39:48,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 21:39:48,652 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 [2021-10-13 21:39:48,653 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:39:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:48,660 INFO L82 PathProgramCache]: Analyzing trace with hash 614876, now seen corresponding path program 1 times [2021-10-13 21:39:48,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:48,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916034518] [2021-10-13 21:39:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:48,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:48,669 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) [2021-10-13 21:39:48,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 21:39:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:48,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 21:39:48,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:49,650 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:39:49,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 76 treesize of output 119 [2021-10-13 21:39:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:53,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:53,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:53,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916034518] [2021-10-13 21:39:53,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916034518] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:53,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:53,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:39:53,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678774506] [2021-10-13 21:39:53,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:39:53,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:53,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:39:53,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:39:53,444 INFO L87 Difference]: Start difference. First operand 5212 states and 19744 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) [2021-10-13 21:39:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:53,605 INFO L93 Difference]: Finished difference Result 5027 states and 19111 transitions. [2021-10-13 21:39:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:39:53,606 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 [2021-10-13 21:39:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:53,660 INFO L225 Difference]: With dead ends: 5027 [2021-10-13 21:39:53,661 INFO L226 Difference]: Without dead ends: 5027 [2021-10-13 21:39:53,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:39:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2021-10-13 21:39:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 5027. [2021-10-13 21:39:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 5014 states have (on average 3.8115277223773436) internal successors, (19111), 5026 states have internal predecessors, (19111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 19111 transitions. [2021-10-13 21:39:53,928 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 19111 transitions. Word has length 3 [2021-10-13 21:39:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:53,928 INFO L470 AbstractCegarLoop]: Abstraction has 5027 states and 19111 transitions. [2021-10-13 21:39:53,929 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) [2021-10-13 21:39:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 19111 transitions. [2021-10-13 21:39:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:39:53,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:53,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:39:53,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 21:39:54,142 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 [2021-10-13 21:39:54,143 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:39:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash 614877, now seen corresponding path program 1 times [2021-10-13 21:39:54,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:54,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717733534] [2021-10-13 21:39:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:54,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:54,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:54,146 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) [2021-10-13 21:39:54,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 21:39:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:54,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:39:54,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:54,423 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-13 21:39:54,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 77 [2021-10-13 21:39:54,434 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 104 treesize of output 102 [2021-10-13 21:39:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:55,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:55,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:55,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717733534] [2021-10-13 21:39:55,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717733534] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:55,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:55,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:39:55,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946271108] [2021-10-13 21:39:55,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:39:55,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:39:55,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:39:55,671 INFO L87 Difference]: Start difference. First operand 5027 states and 19111 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) [2021-10-13 21:39:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:55,798 INFO L93 Difference]: Finished difference Result 4842 states and 18478 transitions. [2021-10-13 21:39:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:39:55,800 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 [2021-10-13 21:39:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:55,857 INFO L225 Difference]: With dead ends: 4842 [2021-10-13 21:39:55,858 INFO L226 Difference]: Without dead ends: 4842 [2021-10-13 21:39:55,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:39:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2021-10-13 21:39:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4842. [2021-10-13 21:39:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4842 states, 4831 states have (on average 3.8248809770233905) internal successors, (18478), 4841 states have internal predecessors, (18478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 18478 transitions. [2021-10-13 21:39:56,127 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 18478 transitions. Word has length 3 [2021-10-13 21:39:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:56,127 INFO L470 AbstractCegarLoop]: Abstraction has 4842 states and 18478 transitions. [2021-10-13 21:39:56,128 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) [2021-10-13 21:39:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 18478 transitions. [2021-10-13 21:39:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:39:56,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:56,128 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:39:56,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 21:39:56,343 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 [2021-10-13 21:39:56,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:39:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:56,345 INFO L82 PathProgramCache]: Analyzing trace with hash 590908280, now seen corresponding path program 1 times [2021-10-13 21:39:56,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:56,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760408039] [2021-10-13 21:39:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:56,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:56,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:56,348 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) [2021-10-13 21:39:56,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 21:39:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:56,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:39:56,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:56,644 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:39:56,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 21:39:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:57,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:57,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:57,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760408039] [2021-10-13 21:39:57,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760408039] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:57,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:57,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:39:57,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005236905] [2021-10-13 21:39:57,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:39:57,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:57,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:39:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:39:57,269 INFO L87 Difference]: Start difference. First operand 4842 states and 18478 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) [2021-10-13 21:39:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:57,364 INFO L93 Difference]: Finished difference Result 4781 states and 18317 transitions. [2021-10-13 21:39:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:39:57,365 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 [2021-10-13 21:39:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:57,398 INFO L225 Difference]: With dead ends: 4781 [2021-10-13 21:39:57,399 INFO L226 Difference]: Without dead ends: 4781 [2021-10-13 21:39:57,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:39:57,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2021-10-13 21:39:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4781. [2021-10-13 21:39:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4772 states have (on average 3.838432523051132) internal successors, (18317), 4780 states have internal predecessors, (18317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 18317 transitions. [2021-10-13 21:39:57,693 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 18317 transitions. Word has length 5 [2021-10-13 21:39:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:57,694 INFO L470 AbstractCegarLoop]: Abstraction has 4781 states and 18317 transitions. [2021-10-13 21:39:57,695 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) [2021-10-13 21:39:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 18317 transitions. [2021-10-13 21:39:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:39:57,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:57,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:39:57,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 21:39:57,907 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 [2021-10-13 21:39:57,908 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:39:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:57,909 INFO L82 PathProgramCache]: Analyzing trace with hash 590908281, now seen corresponding path program 1 times [2021-10-13 21:39:57,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:57,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227892143] [2021-10-13 21:39:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:57,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:57,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:57,913 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) [2021-10-13 21:39:57,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 21:39:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:57,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 21:39:57,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:58,167 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-13 21:39:58,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-13 21:39:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:58,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:58,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:58,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227892143] [2021-10-13 21:39:58,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227892143] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:58,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:58,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:39:58,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177934378] [2021-10-13 21:39:58,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:39:58,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:39:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:39:58,344 INFO L87 Difference]: Start difference. First operand 4781 states and 18317 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) [2021-10-13 21:39:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:58,435 INFO L93 Difference]: Finished difference Result 4720 states and 18156 transitions. [2021-10-13 21:39:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:39:58,436 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 [2021-10-13 21:39:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:58,466 INFO L225 Difference]: With dead ends: 4720 [2021-10-13 21:39:58,466 INFO L226 Difference]: Without dead ends: 4720 [2021-10-13 21:39:58,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:39:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2021-10-13 21:39:58,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 4720. [2021-10-13 21:39:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4713 states have (on average 3.8523233609166136) internal successors, (18156), 4719 states have internal predecessors, (18156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 18156 transitions. [2021-10-13 21:39:58,751 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 18156 transitions. Word has length 5 [2021-10-13 21:39:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:58,752 INFO L470 AbstractCegarLoop]: Abstraction has 4720 states and 18156 transitions. [2021-10-13 21:39:58,752 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) [2021-10-13 21:39:58,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 18156 transitions. [2021-10-13 21:39:58,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:39:58,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:58,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:39:58,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 21:39:58,966 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 [2021-10-13 21:39:58,967 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:39:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash 927186378, now seen corresponding path program 1 times [2021-10-13 21:39:58,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:58,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502698444] [2021-10-13 21:39:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:58,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:58,970 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) [2021-10-13 21:39:58,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 21:39:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:59,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:39:59,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:59,244 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:39:59,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 21:39:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:59,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:39:59,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:59,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502698444] [2021-10-13 21:39:59,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502698444] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:59,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:59,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:39:59,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084869945] [2021-10-13 21:39:59,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:39:59,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:39:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:39:59,814 INFO L87 Difference]: Start difference. First operand 4720 states and 18156 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:39:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:59,889 INFO L93 Difference]: Finished difference Result 4564 states and 17630 transitions. [2021-10-13 21:39:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:39:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:39:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:59,983 INFO L225 Difference]: With dead ends: 4564 [2021-10-13 21:39:59,983 INFO L226 Difference]: Without dead ends: 4564 [2021-10-13 21:39:59,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:39:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-10-13 21:40:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4564. [2021-10-13 21:40:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4559 states have (on average 3.8670761131827156) internal successors, (17630), 4563 states have internal predecessors, (17630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 17630 transitions. [2021-10-13 21:40:00,156 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 17630 transitions. Word has length 7 [2021-10-13 21:40:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:00,157 INFO L470 AbstractCegarLoop]: Abstraction has 4564 states and 17630 transitions. [2021-10-13 21:40:00,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 17630 transitions. [2021-10-13 21:40:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:40:00,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:00,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:00,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:00,373 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 [2021-10-13 21:40:00,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:00,374 INFO L82 PathProgramCache]: Analyzing trace with hash 927186379, now seen corresponding path program 1 times [2021-10-13 21:40:00,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:00,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302446054] [2021-10-13 21:40:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:00,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:00,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:00,377 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) [2021-10-13 21:40:00,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 21:40:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:00,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 21:40:00,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:00,659 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-13 21:40:00,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-13 21:40:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:00,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:00,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:00,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302446054] [2021-10-13 21:40:00,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302446054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:00,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:00,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:40:00,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074041355] [2021-10-13 21:40:00,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:40:00,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:40:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:40:00,915 INFO L87 Difference]: Start difference. First operand 4564 states and 17630 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) [2021-10-13 21:40:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:01,026 INFO L93 Difference]: Finished difference Result 4408 states and 17104 transitions. [2021-10-13 21:40:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:40:01,027 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 [2021-10-13 21:40:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:01,055 INFO L225 Difference]: With dead ends: 4408 [2021-10-13 21:40:01,055 INFO L226 Difference]: Without dead ends: 4408 [2021-10-13 21:40:01,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:40:01,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-10-13 21:40:01,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2021-10-13 21:40:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4405 states have (on average 3.882860385925085) internal successors, (17104), 4407 states have internal predecessors, (17104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 17104 transitions. [2021-10-13 21:40:01,266 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 17104 transitions. Word has length 7 [2021-10-13 21:40:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:01,267 INFO L470 AbstractCegarLoop]: Abstraction has 4408 states and 17104 transitions. [2021-10-13 21:40:01,267 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) [2021-10-13 21:40:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 17104 transitions. [2021-10-13 21:40:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:40:01,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:01,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:01,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:01,483 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 [2021-10-13 21:40:01,483 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:01,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:01,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1967894354, now seen corresponding path program 1 times [2021-10-13 21:40:01,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:01,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474078718] [2021-10-13 21:40:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:01,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:01,486 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) [2021-10-13 21:40:01,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 21:40:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:01,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:40:01,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:01,848 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 21:40:01,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 21:40:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:02,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:02,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:02,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474078718] [2021-10-13 21:40:02,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474078718] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:02,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:02,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 21:40:02,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217323912] [2021-10-13 21:40:02,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 21:40:02,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:02,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 21:40:02,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:40:02,418 INFO L87 Difference]: Start difference. First operand 4408 states and 17104 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:02,489 INFO L93 Difference]: Finished difference Result 3508 states and 13264 transitions. [2021-10-13 21:40:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:40:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 21:40:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:02,555 INFO L225 Difference]: With dead ends: 3508 [2021-10-13 21:40:02,555 INFO L226 Difference]: Without dead ends: 3508 [2021-10-13 21:40:02,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:40:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2021-10-13 21:40:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 3508. [2021-10-13 21:40:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3508 states, 3506 states have (on average 3.7832287507130635) internal successors, (13264), 3507 states have internal predecessors, (13264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 13264 transitions. [2021-10-13 21:40:02,668 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 13264 transitions. Word has length 9 [2021-10-13 21:40:02,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:02,669 INFO L470 AbstractCegarLoop]: Abstraction has 3508 states and 13264 transitions. [2021-10-13 21:40:02,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 13264 transitions. [2021-10-13 21:40:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:40:02,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:02,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:02,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-13 21:40:02,882 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 [2021-10-13 21:40:02,884 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1967894355, now seen corresponding path program 1 times [2021-10-13 21:40:02,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:02,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631209949] [2021-10-13 21:40:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:02,887 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:02,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:02,888 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) [2021-10-13 21:40:02,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 21:40:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:02,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:40:02,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:03,170 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-13 21:40:03,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 72 [2021-10-13 21:40:03,179 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 184 treesize of output 182 [2021-10-13 21:40:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:04,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:04,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:04,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631209949] [2021-10-13 21:40:04,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631209949] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:04,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:04,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:40:04,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451651308] [2021-10-13 21:40:04,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:40:04,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:04,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:40:04,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:40:04,256 INFO L87 Difference]: Start difference. First operand 3508 states and 13264 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:04,301 INFO L93 Difference]: Finished difference Result 2608 states and 9424 transitions. [2021-10-13 21:40:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:40:04,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 21:40:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:04,309 INFO L225 Difference]: With dead ends: 2608 [2021-10-13 21:40:04,309 INFO L226 Difference]: Without dead ends: 2608 [2021-10-13 21:40:04,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:40:04,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-10-13 21:40:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2608. [2021-10-13 21:40:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2607 states have (on average 3.6148830072880704) internal successors, (9424), 2607 states have internal predecessors, (9424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 9424 transitions. [2021-10-13 21:40:04,392 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 9424 transitions. Word has length 9 [2021-10-13 21:40:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:04,392 INFO L470 AbstractCegarLoop]: Abstraction has 2608 states and 9424 transitions. [2021-10-13 21:40:04,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 9424 transitions. [2021-10-13 21:40:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:04,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:04,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:04,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:04,618 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 [2021-10-13 21:40:04,618 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:04,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1949034812, now seen corresponding path program 1 times [2021-10-13 21:40:04,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:04,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320418056] [2021-10-13 21:40:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:04,621 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:04,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:04,622 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) [2021-10-13 21:40:04,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 21:40:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:04,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:40:04,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:04,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:04,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:04,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320418056] [2021-10-13 21:40:04,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320418056] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:04,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:04,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 21:40:04,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720660120] [2021-10-13 21:40:04,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:40:04,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:04,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:40:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:40:04,915 INFO L87 Difference]: Start difference. First operand 2608 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 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) [2021-10-13 21:40:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:04,938 INFO L93 Difference]: Finished difference Result 2116 states and 7480 transitions. [2021-10-13 21:40:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:40:04,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 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 35 [2021-10-13 21:40:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:04,948 INFO L225 Difference]: With dead ends: 2116 [2021-10-13 21:40:04,948 INFO L226 Difference]: Without dead ends: 2116 [2021-10-13 21:40:04,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:40:04,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2021-10-13 21:40:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2116. [2021-10-13 21:40:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 3.5366430260047284) internal successors, (7480), 2115 states have internal predecessors, (7480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 7480 transitions. [2021-10-13 21:40:05,023 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 7480 transitions. Word has length 35 [2021-10-13 21:40:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:05,023 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 7480 transitions. [2021-10-13 21:40:05,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 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) [2021-10-13 21:40:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 7480 transitions. [2021-10-13 21:40:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:05,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:05,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:05,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:05,247 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 [2021-10-13 21:40:05,248 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:05,249 INFO L82 PathProgramCache]: Analyzing trace with hash 511888308, now seen corresponding path program 2 times [2021-10-13 21:40:05,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:05,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125843252] [2021-10-13 21:40:05,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:40:05,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:05,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:05,252 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) [2021-10-13 21:40:05,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 21:40:05,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:40:05,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:05,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:40:05,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:05,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:05,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:05,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125843252] [2021-10-13 21:40:05,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125843252] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:05,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:05,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 21:40:05,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917548194] [2021-10-13 21:40:05,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:40:05,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:05,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:40:05,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:40:05,572 INFO L87 Difference]: Start difference. First operand 2116 states and 7480 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 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) [2021-10-13 21:40:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:05,601 INFO L93 Difference]: Finished difference Result 1876 states and 6381 transitions. [2021-10-13 21:40:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:40:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 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 35 [2021-10-13 21:40:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:05,611 INFO L225 Difference]: With dead ends: 1876 [2021-10-13 21:40:05,612 INFO L226 Difference]: Without dead ends: 1534 [2021-10-13 21:40:05,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:40:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2021-10-13 21:40:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1534. [2021-10-13 21:40:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 3.4253098499673844) internal successors, (5251), 1533 states have internal predecessors, (5251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 5251 transitions. [2021-10-13 21:40:05,677 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 5251 transitions. Word has length 35 [2021-10-13 21:40:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:05,678 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 5251 transitions. [2021-10-13 21:40:05,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 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) [2021-10-13 21:40:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 5251 transitions. [2021-10-13 21:40:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:05,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:05,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:05,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:05,896 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 [2021-10-13 21:40:05,896 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:05,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:05,898 INFO L82 PathProgramCache]: Analyzing trace with hash 144863146, now seen corresponding path program 3 times [2021-10-13 21:40:05,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:05,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409341620] [2021-10-13 21:40:05,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:40:05,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:05,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:05,900 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) [2021-10-13 21:40:05,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 21:40:06,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:40:06,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:06,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:06,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:06,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:07,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:07,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409341620] [2021-10-13 21:40:07,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409341620] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:07,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:07,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:07,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140347932] [2021-10-13 21:40:07,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:07,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:07,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:07,954 INFO L87 Difference]: Start difference. First operand 1534 states and 5251 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:09,523 INFO L93 Difference]: Finished difference Result 3009 states and 9528 transitions. [2021-10-13 21:40:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:09,524 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:09,535 INFO L225 Difference]: With dead ends: 3009 [2021-10-13 21:40:09,535 INFO L226 Difference]: Without dead ends: 2992 [2021-10-13 21:40:09,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1165.8ms TimeCoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2021-10-13 21:40:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1622. [2021-10-13 21:40:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.431215299198026) internal successors, (5562), 1621 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5562 transitions. [2021-10-13 21:40:09,627 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5562 transitions. Word has length 35 [2021-10-13 21:40:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:09,627 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5562 transitions. [2021-10-13 21:40:09,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5562 transitions. [2021-10-13 21:40:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:09,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:09,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:09,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:09,848 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 [2021-10-13 21:40:09,848 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:09,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:09,850 INFO L82 PathProgramCache]: Analyzing trace with hash -201632238, now seen corresponding path program 4 times [2021-10-13 21:40:09,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:09,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444001654] [2021-10-13 21:40:09,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:40:09,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:09,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:09,852 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) [2021-10-13 21:40:09,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 21:40:10,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:40:10,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:10,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:10,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:11,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:11,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444001654] [2021-10-13 21:40:11,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444001654] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:11,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:11,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:11,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508445470] [2021-10-13 21:40:11,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:11,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:11,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:11,673 INFO L87 Difference]: Start difference. First operand 1622 states and 5562 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:12,990 INFO L93 Difference]: Finished difference Result 3025 states and 9548 transitions. [2021-10-13 21:40:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:13,002 INFO L225 Difference]: With dead ends: 3025 [2021-10-13 21:40:13,002 INFO L226 Difference]: Without dead ends: 3012 [2021-10-13 21:40:13,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1089.8ms TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-10-13 21:40:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1626. [2021-10-13 21:40:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.427076923076923) internal successors, (5569), 1625 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5569 transitions. [2021-10-13 21:40:13,096 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5569 transitions. Word has length 35 [2021-10-13 21:40:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:13,096 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5569 transitions. [2021-10-13 21:40:13,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5569 transitions. [2021-10-13 21:40:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:13,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:13,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:13,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:13,317 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 [2021-10-13 21:40:13,318 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:13,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:13,320 INFO L82 PathProgramCache]: Analyzing trace with hash 178431370, now seen corresponding path program 5 times [2021-10-13 21:40:13,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:13,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557980441] [2021-10-13 21:40:13,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:40:13,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:13,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:13,322 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) [2021-10-13 21:40:13,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 21:40:13,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:40:13,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:13,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:13,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:14,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:15,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:15,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557980441] [2021-10-13 21:40:15,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557980441] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:15,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:15,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:15,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571877574] [2021-10-13 21:40:15,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:15,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:15,348 INFO L87 Difference]: Start difference. First operand 1626 states and 5569 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:16,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:16,694 INFO L93 Difference]: Finished difference Result 3011 states and 9528 transitions. [2021-10-13 21:40:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:16,694 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:16,702 INFO L225 Difference]: With dead ends: 3011 [2021-10-13 21:40:16,702 INFO L226 Difference]: Without dead ends: 2988 [2021-10-13 21:40:16,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1130.4ms TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2021-10-13 21:40:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1618. [2021-10-13 21:40:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.432900432900433) internal successors, (5551), 1617 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5551 transitions. [2021-10-13 21:40:16,760 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5551 transitions. Word has length 35 [2021-10-13 21:40:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:16,760 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5551 transitions. [2021-10-13 21:40:16,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5551 transitions. [2021-10-13 21:40:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:16,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:16,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:16,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:16,987 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 [2021-10-13 21:40:16,987 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:16,989 INFO L82 PathProgramCache]: Analyzing trace with hash -928222234, now seen corresponding path program 6 times [2021-10-13 21:40:16,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:16,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969774603] [2021-10-13 21:40:16,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:40:16,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:16,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:16,991 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) [2021-10-13 21:40:16,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 21:40:17,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:40:17,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:17,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:17,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:17,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:18,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:18,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969774603] [2021-10-13 21:40:18,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969774603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:18,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:18,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:18,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081159735] [2021-10-13 21:40:18,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:18,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:18,965 INFO L87 Difference]: Start difference. First operand 1618 states and 5551 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:20,383 INFO L93 Difference]: Finished difference Result 2977 states and 9468 transitions. [2021-10-13 21:40:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:20,396 INFO L225 Difference]: With dead ends: 2977 [2021-10-13 21:40:20,396 INFO L226 Difference]: Without dead ends: 2960 [2021-10-13 21:40:20,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1050.5ms TimeCoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2021-10-13 21:40:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1622. [2021-10-13 21:40:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.428747686613202) internal successors, (5558), 1621 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5558 transitions. [2021-10-13 21:40:20,461 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5558 transitions. Word has length 35 [2021-10-13 21:40:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:20,462 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5558 transitions. [2021-10-13 21:40:20,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5558 transitions. [2021-10-13 21:40:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:20,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:20,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:20,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 21:40:20,691 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 [2021-10-13 21:40:20,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:20,693 INFO L82 PathProgramCache]: Analyzing trace with hash 214687378, now seen corresponding path program 7 times [2021-10-13 21:40:20,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:20,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255127408] [2021-10-13 21:40:20,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:40:20,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:20,695 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) [2021-10-13 21:40:20,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 21:40:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:20,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:20,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:21,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:22,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:22,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255127408] [2021-10-13 21:40:22,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255127408] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:22,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:22,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:22,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659554344] [2021-10-13 21:40:22,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:22,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:22,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:22,658 INFO L87 Difference]: Start difference. First operand 1622 states and 5558 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:24,079 INFO L93 Difference]: Finished difference Result 2995 states and 9492 transitions. [2021-10-13 21:40:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:40:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:24,094 INFO L225 Difference]: With dead ends: 2995 [2021-10-13 21:40:24,094 INFO L226 Difference]: Without dead ends: 2982 [2021-10-13 21:40:24,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1151.9ms TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:40:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-10-13 21:40:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1626. [2021-10-13 21:40:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4246153846153846) internal successors, (5565), 1625 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5565 transitions. [2021-10-13 21:40:24,176 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5565 transitions. Word has length 35 [2021-10-13 21:40:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:24,177 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5565 transitions. [2021-10-13 21:40:24,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5565 transitions. [2021-10-13 21:40:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:24,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:24,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:24,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:24,398 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 [2021-10-13 21:40:24,398 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:24,399 INFO L82 PathProgramCache]: Analyzing trace with hash -335308772, now seen corresponding path program 8 times [2021-10-13 21:40:24,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:24,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277805453] [2021-10-13 21:40:24,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:40:24,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:24,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:24,401 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) [2021-10-13 21:40:24,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 21:40:24,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:40:24,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:24,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:24,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:25,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:26,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:26,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277805453] [2021-10-13 21:40:26,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277805453] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:26,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:26,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:26,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337362000] [2021-10-13 21:40:26,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:26,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:26,378 INFO L87 Difference]: Start difference. First operand 1626 states and 5565 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:27,628 INFO L93 Difference]: Finished difference Result 2981 states and 9472 transitions. [2021-10-13 21:40:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:40:27,628 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:27,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:27,637 INFO L225 Difference]: With dead ends: 2981 [2021-10-13 21:40:27,637 INFO L226 Difference]: Without dead ends: 2956 [2021-10-13 21:40:27,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1095.8ms TimeCoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:40:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-10-13 21:40:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1618. [2021-10-13 21:40:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.430426716141002) internal successors, (5547), 1617 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5547 transitions. [2021-10-13 21:40:27,698 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5547 transitions. Word has length 35 [2021-10-13 21:40:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:27,699 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5547 transitions. [2021-10-13 21:40:27,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5547 transitions. [2021-10-13 21:40:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:27,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:27,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:27,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:27,918 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 [2021-10-13 21:40:27,919 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash 868827366, now seen corresponding path program 9 times [2021-10-13 21:40:27,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:27,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739409996] [2021-10-13 21:40:27,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:40:27,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:27,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:27,922 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) [2021-10-13 21:40:27,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 21:40:28,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:40:28,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:28,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:28,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:28,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:29,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:29,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739409996] [2021-10-13 21:40:29,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739409996] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:29,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:29,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:29,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015554738] [2021-10-13 21:40:29,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:29,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:29,878 INFO L87 Difference]: Start difference. First operand 1618 states and 5547 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:31,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:31,259 INFO L93 Difference]: Finished difference Result 3035 states and 9573 transitions. [2021-10-13 21:40:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:31,260 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:31,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:31,269 INFO L225 Difference]: With dead ends: 3035 [2021-10-13 21:40:31,270 INFO L226 Difference]: Without dead ends: 3022 [2021-10-13 21:40:31,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1070.2ms TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-10-13 21:40:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1626. [2021-10-13 21:40:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.427076923076923) internal successors, (5569), 1625 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5569 transitions. [2021-10-13 21:40:31,328 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5569 transitions. Word has length 35 [2021-10-13 21:40:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:31,328 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5569 transitions. [2021-10-13 21:40:31,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5569 transitions. [2021-10-13 21:40:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:31,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:31,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:31,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:31,548 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 [2021-10-13 21:40:31,548 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1248890974, now seen corresponding path program 10 times [2021-10-13 21:40:31,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:31,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969230884] [2021-10-13 21:40:31,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:40:31,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:31,551 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) [2021-10-13 21:40:31,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 21:40:31,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:40:31,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:31,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:31,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:32,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:33,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:33,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969230884] [2021-10-13 21:40:33,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969230884] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:33,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:33,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:33,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030371107] [2021-10-13 21:40:33,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:33,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:33,529 INFO L87 Difference]: Start difference. First operand 1626 states and 5569 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:34,745 INFO L93 Difference]: Finished difference Result 3037 states and 9573 transitions. [2021-10-13 21:40:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:34,746 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:34,758 INFO L225 Difference]: With dead ends: 3037 [2021-10-13 21:40:34,758 INFO L226 Difference]: Without dead ends: 3018 [2021-10-13 21:40:34,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1048.2ms TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-10-13 21:40:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1622. [2021-10-13 21:40:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.428747686613202) internal successors, (5558), 1621 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5558 transitions. [2021-10-13 21:40:34,828 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5558 transitions. Word has length 35 [2021-10-13 21:40:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:34,829 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5558 transitions. [2021-10-13 21:40:34,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5558 transitions. [2021-10-13 21:40:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:34,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:34,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:34,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:35,049 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 [2021-10-13 21:40:35,050 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1936734934, now seen corresponding path program 11 times [2021-10-13 21:40:35,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:35,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381407502] [2021-10-13 21:40:35,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:40:35,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:35,054 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) [2021-10-13 21:40:35,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 21:40:35,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:40:35,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:35,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:35,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:36,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:37,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:37,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381407502] [2021-10-13 21:40:37,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381407502] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:37,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:37,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:37,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286690235] [2021-10-13 21:40:37,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:37,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:37,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:37,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:37,067 INFO L87 Difference]: Start difference. First operand 1622 states and 5558 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:38,412 INFO L93 Difference]: Finished difference Result 3025 states and 9547 transitions. [2021-10-13 21:40:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:40:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:38,424 INFO L225 Difference]: With dead ends: 3025 [2021-10-13 21:40:38,424 INFO L226 Difference]: Without dead ends: 3012 [2021-10-13 21:40:38,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1130.6ms TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:40:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-10-13 21:40:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1626. [2021-10-13 21:40:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4246153846153846) internal successors, (5565), 1625 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5565 transitions. [2021-10-13 21:40:38,488 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5565 transitions. Word has length 35 [2021-10-13 21:40:38,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:38,488 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5565 transitions. [2021-10-13 21:40:38,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5565 transitions. [2021-10-13 21:40:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:38,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:38,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:38,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:38,708 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 [2021-10-13 21:40:38,708 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:38,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1808236212, now seen corresponding path program 12 times [2021-10-13 21:40:38,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:38,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096280973] [2021-10-13 21:40:38,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:40:38,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:38,712 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) [2021-10-13 21:40:38,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 21:40:39,214 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:40:39,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:39,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:39,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:39,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:40,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:40,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096280973] [2021-10-13 21:40:40,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096280973] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:40,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:40,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:40,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848623193] [2021-10-13 21:40:40,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:40,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:40,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:40,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:40,991 INFO L87 Difference]: Start difference. First operand 1626 states and 5565 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:42,403 INFO L93 Difference]: Finished difference Result 3029 states and 9551 transitions. [2021-10-13 21:40:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:40:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:42,415 INFO L225 Difference]: With dead ends: 3029 [2021-10-13 21:40:42,415 INFO L226 Difference]: Without dead ends: 3008 [2021-10-13 21:40:42,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1202.6ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:40:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-10-13 21:40:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1622. [2021-10-13 21:40:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.4262800740283774) internal successors, (5554), 1621 states have internal predecessors, (5554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5554 transitions. [2021-10-13 21:40:42,481 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5554 transitions. Word has length 35 [2021-10-13 21:40:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:42,481 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5554 transitions. [2021-10-13 21:40:42,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5554 transitions. [2021-10-13 21:40:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:42,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:42,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:42,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:42,704 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 [2021-10-13 21:40:42,704 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash 768761002, now seen corresponding path program 13 times [2021-10-13 21:40:42,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:42,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879889942] [2021-10-13 21:40:42,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:40:42,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:42,707 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) [2021-10-13 21:40:42,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 21:40:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:43,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:43,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:43,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:44,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:44,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879889942] [2021-10-13 21:40:44,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879889942] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:44,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:44,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:44,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599630334] [2021-10-13 21:40:44,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:44,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:44,819 INFO L87 Difference]: Start difference. First operand 1622 states and 5554 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:46,105 INFO L93 Difference]: Finished difference Result 3009 states and 9520 transitions. [2021-10-13 21:40:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:46,106 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:46,112 INFO L225 Difference]: With dead ends: 3009 [2021-10-13 21:40:46,112 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:40:46,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1032.4ms TimeCoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:40:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1628. [2021-10-13 21:40:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 3.4204056545789796) internal successors, (5565), 1627 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5565 transitions. [2021-10-13 21:40:46,151 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5565 transitions. Word has length 35 [2021-10-13 21:40:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:46,151 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 5565 transitions. [2021-10-13 21:40:46,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5565 transitions. [2021-10-13 21:40:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:46,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:46,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:46,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:46,355 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 [2021-10-13 21:40:46,356 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:46,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:46,357 INFO L82 PathProgramCache]: Analyzing trace with hash 705306172, now seen corresponding path program 14 times [2021-10-13 21:40:46,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:46,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146967359] [2021-10-13 21:40:46,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:40:46,358 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:46,360 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) [2021-10-13 21:40:46,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 21:40:46,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:40:46,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:46,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:46,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:47,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:48,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:48,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146967359] [2021-10-13 21:40:48,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146967359] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:48,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:48,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:48,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787842985] [2021-10-13 21:40:48,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:48,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:48,364 INFO L87 Difference]: Start difference. First operand 1628 states and 5565 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:49,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:49,500 INFO L93 Difference]: Finished difference Result 3003 states and 9503 transitions. [2021-10-13 21:40:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:49,501 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:49,508 INFO L225 Difference]: With dead ends: 3003 [2021-10-13 21:40:49,508 INFO L226 Difference]: Without dead ends: 2972 [2021-10-13 21:40:49,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1022.9ms TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-10-13 21:40:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1614. [2021-10-13 21:40:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.432114073155611) internal successors, (5536), 1613 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5536 transitions. [2021-10-13 21:40:49,548 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5536 transitions. Word has length 35 [2021-10-13 21:40:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:49,549 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 5536 transitions. [2021-10-13 21:40:49,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5536 transitions. [2021-10-13 21:40:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:49,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:49,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:49,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:49,753 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 [2021-10-13 21:40:49,753 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1727349070, now seen corresponding path program 15 times [2021-10-13 21:40:49,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:49,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728596464] [2021-10-13 21:40:49,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:40:49,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:49,758 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) [2021-10-13 21:40:49,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 21:40:50,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:40:50,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:50,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:50,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:50,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:51,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:51,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728596464] [2021-10-13 21:40:51,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728596464] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:51,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:51,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:51,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611451566] [2021-10-13 21:40:52,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:52,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:52,001 INFO L87 Difference]: Start difference. First operand 1614 states and 5536 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:53,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:53,247 INFO L93 Difference]: Finished difference Result 2929 states and 9361 transitions. [2021-10-13 21:40:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:53,247 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:53,256 INFO L225 Difference]: With dead ends: 2929 [2021-10-13 21:40:53,256 INFO L226 Difference]: Without dead ends: 2912 [2021-10-13 21:40:53,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1076.3ms TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2021-10-13 21:40:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1626. [2021-10-13 21:40:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4246153846153846) internal successors, (5565), 1625 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5565 transitions. [2021-10-13 21:40:53,296 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5565 transitions. Word has length 35 [2021-10-13 21:40:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:53,296 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5565 transitions. [2021-10-13 21:40:53,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5565 transitions. [2021-10-13 21:40:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:53,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:53,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:53,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:53,501 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 [2021-10-13 21:40:53,502 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:53,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1380853686, now seen corresponding path program 16 times [2021-10-13 21:40:53,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:53,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752293238] [2021-10-13 21:40:53,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:40:53,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:53,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:53,506 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) [2021-10-13 21:40:53,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 21:40:54,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:40:54,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:54,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:54,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:54,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:55,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:55,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752293238] [2021-10-13 21:40:55,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752293238] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:55,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:55,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:55,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095603923] [2021-10-13 21:40:55,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:55,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:55,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:55,748 INFO L87 Difference]: Start difference. First operand 1626 states and 5565 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:56,882 INFO L93 Difference]: Finished difference Result 2945 states and 9381 transitions. [2021-10-13 21:40:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:56,882 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:40:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:56,891 INFO L225 Difference]: With dead ends: 2945 [2021-10-13 21:40:56,891 INFO L226 Difference]: Without dead ends: 2932 [2021-10-13 21:40:56,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1043.3ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:40:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-10-13 21:40:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1630. [2021-10-13 21:40:56,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.4205033763044814) internal successors, (5572), 1629 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5572 transitions. [2021-10-13 21:40:56,930 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5572 transitions. Word has length 35 [2021-10-13 21:40:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:56,931 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5572 transitions. [2021-10-13 21:40:56,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5572 transitions. [2021-10-13 21:40:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:40:56,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:56,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:56,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-13 21:40:57,149 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 [2021-10-13 21:40:57,149 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:40:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:57,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1760917294, now seen corresponding path program 17 times [2021-10-13 21:40:57,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:57,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554938886] [2021-10-13 21:40:57,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:40:57,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:57,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:57,153 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) [2021-10-13 21:40:57,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 21:40:57,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:40:57,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:57,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:40:57,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:58,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:59,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:59,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554938886] [2021-10-13 21:40:59,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554938886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:59,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:59,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:40:59,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147852265] [2021-10-13 21:40:59,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:40:59,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:40:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:59,406 INFO L87 Difference]: Start difference. First operand 1630 states and 5572 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:00,731 INFO L93 Difference]: Finished difference Result 2931 states and 9361 transitions. [2021-10-13 21:41:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:00,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:00,738 INFO L225 Difference]: With dead ends: 2931 [2021-10-13 21:41:00,738 INFO L226 Difference]: Without dead ends: 2908 [2021-10-13 21:41:00,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1051.2ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2021-10-13 21:41:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1622. [2021-10-13 21:41:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.4262800740283774) internal successors, (5554), 1621 states have internal predecessors, (5554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5554 transitions. [2021-10-13 21:41:00,799 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5554 transitions. Word has length 35 [2021-10-13 21:41:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:00,799 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5554 transitions. [2021-10-13 21:41:00,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:00,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5554 transitions. [2021-10-13 21:41:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:00,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:00,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:00,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:01,003 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 [2021-10-13 21:41:01,004 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:01,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1393982566, now seen corresponding path program 18 times [2021-10-13 21:41:01,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:01,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692055038] [2021-10-13 21:41:01,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:41:01,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:01,008 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) [2021-10-13 21:41:01,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 21:41:01,572 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:41:01,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:01,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:01,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:02,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:03,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:03,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692055038] [2021-10-13 21:41:03,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692055038] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:03,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:03,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:03,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668935844] [2021-10-13 21:41:03,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:03,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:03,229 INFO L87 Difference]: Start difference. First operand 1622 states and 5554 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:04,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:04,539 INFO L93 Difference]: Finished difference Result 2961 states and 9414 transitions. [2021-10-13 21:41:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:04,540 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:04,546 INFO L225 Difference]: With dead ends: 2961 [2021-10-13 21:41:04,546 INFO L226 Difference]: Without dead ends: 2948 [2021-10-13 21:41:04,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1049.7ms TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2021-10-13 21:41:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1634. [2021-10-13 21:41:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.4188609920391917) internal successors, (5583), 1633 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5583 transitions. [2021-10-13 21:41:04,582 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5583 transitions. Word has length 35 [2021-10-13 21:41:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:04,583 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5583 transitions. [2021-10-13 21:41:04,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5583 transitions. [2021-10-13 21:41:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:04,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:04,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:04,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:04,787 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 [2021-10-13 21:41:04,787 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1774046174, now seen corresponding path program 19 times [2021-10-13 21:41:04,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:04,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556164257] [2021-10-13 21:41:04,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:41:04,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:04,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:04,791 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) [2021-10-13 21:41:04,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 21:41:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:05,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:05,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:06,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:07,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:07,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556164257] [2021-10-13 21:41:07,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556164257] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:07,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:07,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:07,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224486176] [2021-10-13 21:41:07,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:07,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:07,140 INFO L87 Difference]: Start difference. First operand 1634 states and 5583 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:08,345 INFO L93 Difference]: Finished difference Result 2963 states and 9414 transitions. [2021-10-13 21:41:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:08,345 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:08,353 INFO L225 Difference]: With dead ends: 2963 [2021-10-13 21:41:08,353 INFO L226 Difference]: Without dead ends: 2944 [2021-10-13 21:41:08,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1060.1ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:08,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-10-13 21:41:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1630. [2021-10-13 21:41:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.4205033763044814) internal successors, (5572), 1629 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5572 transitions. [2021-10-13 21:41:08,393 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5572 transitions. Word has length 35 [2021-10-13 21:41:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:08,394 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5572 transitions. [2021-10-13 21:41:08,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5572 transitions. [2021-10-13 21:41:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:08,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:08,398 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:08,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:08,598 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 [2021-10-13 21:41:08,599 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:08,600 INFO L82 PathProgramCache]: Analyzing trace with hash -315951282, now seen corresponding path program 20 times [2021-10-13 21:41:08,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:08,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83395848] [2021-10-13 21:41:08,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:41:08,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:08,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:08,603 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) [2021-10-13 21:41:08,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 21:41:09,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:41:09,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:09,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:09,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:09,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:11,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:11,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83395848] [2021-10-13 21:41:11,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83395848] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:11,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:11,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:11,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425823140] [2021-10-13 21:41:11,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:11,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:11,089 INFO L87 Difference]: Start difference. First operand 1630 states and 5572 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:12,263 INFO L93 Difference]: Finished difference Result 2943 states and 9383 transitions. [2021-10-13 21:41:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:12,264 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:12,271 INFO L225 Difference]: With dead ends: 2943 [2021-10-13 21:41:12,272 INFO L226 Difference]: Without dead ends: 2900 [2021-10-13 21:41:12,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1111.3ms TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2021-10-13 21:41:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1614. [2021-10-13 21:41:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.427154370737756) internal successors, (5528), 1613 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5528 transitions. [2021-10-13 21:41:12,308 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5528 transitions. Word has length 35 [2021-10-13 21:41:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:12,308 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 5528 transitions. [2021-10-13 21:41:12,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5528 transitions. [2021-10-13 21:41:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:12,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:12,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:12,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:12,512 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 [2021-10-13 21:41:12,513 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:12,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:12,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1275822646, now seen corresponding path program 21 times [2021-10-13 21:41:12,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:12,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783723173] [2021-10-13 21:41:12,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:41:12,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:12,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:12,516 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) [2021-10-13 21:41:12,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 21:41:13,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:41:13,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:13,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:13,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:13,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:14,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:14,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783723173] [2021-10-13 21:41:14,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783723173] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:14,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:14,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:14,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616109776] [2021-10-13 21:41:14,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:14,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:14,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:14,758 INFO L87 Difference]: Start difference. First operand 1614 states and 5528 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:15,967 INFO L93 Difference]: Finished difference Result 3055 states and 9622 transitions. [2021-10-13 21:41:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:15,968 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:15,978 INFO L225 Difference]: With dead ends: 3055 [2021-10-13 21:41:15,978 INFO L226 Difference]: Without dead ends: 3042 [2021-10-13 21:41:15,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1083.9ms TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-10-13 21:41:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1630. [2021-10-13 21:41:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.425414364640884) internal successors, (5580), 1629 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5580 transitions. [2021-10-13 21:41:16,039 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5580 transitions. Word has length 35 [2021-10-13 21:41:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:16,040 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5580 transitions. [2021-10-13 21:41:16,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5580 transitions. [2021-10-13 21:41:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:16,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:16,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:16,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:16,260 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 [2021-10-13 21:41:16,260 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1655886254, now seen corresponding path program 22 times [2021-10-13 21:41:16,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:16,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333104715] [2021-10-13 21:41:16,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:41:16,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:16,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:16,263 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) [2021-10-13 21:41:16,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 21:41:16,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:41:16,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:16,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:17,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:17,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:18,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:18,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333104715] [2021-10-13 21:41:18,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333104715] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:18,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:18,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:18,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830628069] [2021-10-13 21:41:18,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:18,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:18,509 INFO L87 Difference]: Start difference. First operand 1630 states and 5580 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:19,888 INFO L93 Difference]: Finished difference Result 3057 states and 9622 transitions. [2021-10-13 21:41:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:19,895 INFO L225 Difference]: With dead ends: 3057 [2021-10-13 21:41:19,895 INFO L226 Difference]: Without dead ends: 3038 [2021-10-13 21:41:19,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1044.2ms TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-10-13 21:41:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1626. [2021-10-13 21:41:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.427076923076923) internal successors, (5569), 1625 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5569 transitions. [2021-10-13 21:41:19,935 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5569 transitions. Word has length 35 [2021-10-13 21:41:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:19,935 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5569 transitions. [2021-10-13 21:41:19,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5569 transitions. [2021-10-13 21:41:19,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:19,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:19,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:19,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:20,142 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 [2021-10-13 21:41:20,143 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1529739654, now seen corresponding path program 23 times [2021-10-13 21:41:20,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:20,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389423873] [2021-10-13 21:41:20,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:41:20,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:20,146 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) [2021-10-13 21:41:20,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 21:41:20,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:41:20,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:20,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:20,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:21,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:22,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:22,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389423873] [2021-10-13 21:41:22,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389423873] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:22,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:22,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:22,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467152132] [2021-10-13 21:41:22,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:22,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:22,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:22,609 INFO L87 Difference]: Start difference. First operand 1626 states and 5569 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:23,959 INFO L93 Difference]: Finished difference Result 3031 states and 9580 transitions. [2021-10-13 21:41:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:41:23,960 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:23,968 INFO L225 Difference]: With dead ends: 3031 [2021-10-13 21:41:23,968 INFO L226 Difference]: Without dead ends: 3018 [2021-10-13 21:41:23,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1130.0ms TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:41:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-10-13 21:41:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1630. [2021-10-13 21:41:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.4229588704726828) internal successors, (5576), 1629 states have internal predecessors, (5576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5576 transitions. [2021-10-13 21:41:24,005 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5576 transitions. Word has length 35 [2021-10-13 21:41:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:24,005 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5576 transitions. [2021-10-13 21:41:24,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5576 transitions. [2021-10-13 21:41:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:24,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:24,010 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:24,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-13 21:41:24,212 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 [2021-10-13 21:41:24,212 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:24,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2079735804, now seen corresponding path program 24 times [2021-10-13 21:41:24,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:24,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417247439] [2021-10-13 21:41:24,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:41:24,214 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:24,215 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) [2021-10-13 21:41:24,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 21:41:25,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:41:25,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:25,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:25,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:25,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:26,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:26,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417247439] [2021-10-13 21:41:26,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417247439] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:26,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:26,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:26,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291435512] [2021-10-13 21:41:26,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:26,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:26,654 INFO L87 Difference]: Start difference. First operand 1630 states and 5576 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:28,058 INFO L93 Difference]: Finished difference Result 3035 states and 9584 transitions. [2021-10-13 21:41:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:41:28,058 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:28,066 INFO L225 Difference]: With dead ends: 3035 [2021-10-13 21:41:28,066 INFO L226 Difference]: Without dead ends: 3014 [2021-10-13 21:41:28,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1125.2ms TimeCoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:41:28,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2021-10-13 21:41:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1626. [2021-10-13 21:41:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4246153846153846) internal successors, (5565), 1625 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5565 transitions. [2021-10-13 21:41:28,117 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5565 transitions. Word has length 35 [2021-10-13 21:41:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:28,117 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5565 transitions. [2021-10-13 21:41:28,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5565 transitions. [2021-10-13 21:41:28,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:28,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:28,122 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:28,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-13 21:41:28,324 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 [2021-10-13 21:41:28,324 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:28,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:28,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1175756282, now seen corresponding path program 25 times [2021-10-13 21:41:28,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:28,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133684250] [2021-10-13 21:41:28,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:41:28,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:28,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:28,330 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) [2021-10-13 21:41:28,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 21:41:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:29,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:29,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:29,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:30,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:30,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133684250] [2021-10-13 21:41:30,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133684250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:30,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:30,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:30,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058071421] [2021-10-13 21:41:30,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:30,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:30,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:30,835 INFO L87 Difference]: Start difference. First operand 1626 states and 5565 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:31,996 INFO L93 Difference]: Finished difference Result 3059 states and 9621 transitions. [2021-10-13 21:41:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:31,997 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:32,004 INFO L225 Difference]: With dead ends: 3059 [2021-10-13 21:41:32,005 INFO L226 Difference]: Without dead ends: 3044 [2021-10-13 21:41:32,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1094.0ms TimeCoverageRelationStatistics Valid=336, Invalid=924, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:32,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2021-10-13 21:41:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 1632. [2021-10-13 21:41:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.418761496014715) internal successors, (5576), 1631 states have internal predecessors, (5576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5576 transitions. [2021-10-13 21:41:32,042 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5576 transitions. Word has length 35 [2021-10-13 21:41:32,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:32,043 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5576 transitions. [2021-10-13 21:41:32,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5576 transitions. [2021-10-13 21:41:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:32,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:32,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:32,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:32,247 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 [2021-10-13 21:41:32,248 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1112301452, now seen corresponding path program 26 times [2021-10-13 21:41:32,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:32,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851394186] [2021-10-13 21:41:32,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:41:32,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:32,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:32,251 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) [2021-10-13 21:41:32,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 21:41:33,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:41:33,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:33,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:33,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:33,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:34,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:34,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851394186] [2021-10-13 21:41:34,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851394186] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:34,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:34,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:34,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053234463] [2021-10-13 21:41:34,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:34,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:34,693 INFO L87 Difference]: Start difference. First operand 1632 states and 5576 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:35,926 INFO L93 Difference]: Finished difference Result 3053 states and 9604 transitions. [2021-10-13 21:41:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:35,927 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:35,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:35,934 INFO L225 Difference]: With dead ends: 3053 [2021-10-13 21:41:35,934 INFO L226 Difference]: Without dead ends: 3026 [2021-10-13 21:41:35,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1054.1ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-10-13 21:41:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1622. [2021-10-13 21:41:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.4262800740283774) internal successors, (5554), 1621 states have internal predecessors, (5554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5554 transitions. [2021-10-13 21:41:35,973 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5554 transitions. Word has length 35 [2021-10-13 21:41:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:35,973 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5554 transitions. [2021-10-13 21:41:35,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5554 transitions. [2021-10-13 21:41:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:35,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:35,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:35,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:36,184 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 [2021-10-13 21:41:36,185 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:36,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:36,187 INFO L82 PathProgramCache]: Analyzing trace with hash 218491922, now seen corresponding path program 27 times [2021-10-13 21:41:36,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:36,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393740725] [2021-10-13 21:41:36,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:41:36,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:36,188 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) [2021-10-13 21:41:36,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 21:41:37,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:41:37,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:37,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:37,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:37,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:38,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:38,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393740725] [2021-10-13 21:41:38,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393740725] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:38,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:38,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:38,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804556513] [2021-10-13 21:41:38,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:38,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:38,984 INFO L87 Difference]: Start difference. First operand 1622 states and 5554 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:40,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:40,476 INFO L93 Difference]: Finished difference Result 3019 states and 9544 transitions. [2021-10-13 21:41:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:40,477 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:40,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:40,488 INFO L225 Difference]: With dead ends: 3019 [2021-10-13 21:41:40,490 INFO L226 Difference]: Without dead ends: 3006 [2021-10-13 21:41:40,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1207.4ms TimeCoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-10-13 21:41:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1634. [2021-10-13 21:41:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.4188609920391917) internal successors, (5583), 1633 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5583 transitions. [2021-10-13 21:41:40,553 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5583 transitions. Word has length 35 [2021-10-13 21:41:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:40,553 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5583 transitions. [2021-10-13 21:41:40,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5583 transitions. [2021-10-13 21:41:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:40,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:40,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:40,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:40,773 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 [2021-10-13 21:41:40,773 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:40,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:40,774 INFO L82 PathProgramCache]: Analyzing trace with hash 598555530, now seen corresponding path program 28 times [2021-10-13 21:41:40,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:40,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703426491] [2021-10-13 21:41:40,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:41:40,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:40,779 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) [2021-10-13 21:41:40,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 21:41:41,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:41:41,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:41,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:42,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:43,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:43,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703426491] [2021-10-13 21:41:43,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703426491] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:43,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:43,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:43,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689559732] [2021-10-13 21:41:43,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:43,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:43,416 INFO L87 Difference]: Start difference. First operand 1634 states and 5583 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:44,674 INFO L93 Difference]: Finished difference Result 3021 states and 9544 transitions. [2021-10-13 21:41:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:44,675 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:44,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:44,683 INFO L225 Difference]: With dead ends: 3021 [2021-10-13 21:41:44,683 INFO L226 Difference]: Without dead ends: 3002 [2021-10-13 21:41:44,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1133.4ms TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-10-13 21:41:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1630. [2021-10-13 21:41:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.4205033763044814) internal successors, (5572), 1629 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5572 transitions. [2021-10-13 21:41:44,720 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5572 transitions. Word has length 35 [2021-10-13 21:41:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:44,720 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5572 transitions. [2021-10-13 21:41:44,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5572 transitions. [2021-10-13 21:41:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:44,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:44,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:44,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:44,925 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 [2021-10-13 21:41:44,925 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1491441926, now seen corresponding path program 29 times [2021-10-13 21:41:44,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:44,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637599556] [2021-10-13 21:41:44,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:41:44,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:44,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:44,928 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) [2021-10-13 21:41:44,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 21:41:45,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:41:45,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:45,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:45,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:46,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:47,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:47,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637599556] [2021-10-13 21:41:47,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637599556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:47,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:47,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:47,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356480902] [2021-10-13 21:41:47,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:47,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:47,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:47,557 INFO L87 Difference]: Start difference. First operand 1630 states and 5572 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:48,775 INFO L93 Difference]: Finished difference Result 3029 states and 9555 transitions. [2021-10-13 21:41:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:48,775 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:48,781 INFO L225 Difference]: With dead ends: 3029 [2021-10-13 21:41:48,782 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:41:48,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1090.9ms TimeCoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:41:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1622. [2021-10-13 21:41:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.421344848858729) internal successors, (5546), 1621 states have internal predecessors, (5546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5546 transitions. [2021-10-13 21:41:48,816 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5546 transitions. Word has length 35 [2021-10-13 21:41:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:48,816 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5546 transitions. [2021-10-13 21:41:48,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5546 transitions. [2021-10-13 21:41:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:48,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:48,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:48,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:49,033 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 [2021-10-13 21:41:49,033 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash 810344586, now seen corresponding path program 30 times [2021-10-13 21:41:49,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:49,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229655505] [2021-10-13 21:41:49,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:41:49,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:49,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:49,036 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) [2021-10-13 21:41:49,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 21:41:50,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:41:50,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:50,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:50,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:50,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:51,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:51,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229655505] [2021-10-13 21:41:51,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229655505] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:51,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:51,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:51,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308453596] [2021-10-13 21:41:51,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:51,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:51,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:51,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:51,729 INFO L87 Difference]: Start difference. First operand 1622 states and 5546 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:52,912 INFO L93 Difference]: Finished difference Result 3009 states and 9510 transitions. [2021-10-13 21:41:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:52,919 INFO L225 Difference]: With dead ends: 3009 [2021-10-13 21:41:52,919 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:41:52,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1097.1ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:41:52,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1640. [2021-10-13 21:41:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 3.4112263575350825) internal successors, (5591), 1639 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 5591 transitions. [2021-10-13 21:41:52,961 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 5591 transitions. Word has length 35 [2021-10-13 21:41:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:52,961 INFO L470 AbstractCegarLoop]: Abstraction has 1640 states and 5591 transitions. [2021-10-13 21:41:52,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 5591 transitions. [2021-10-13 21:41:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:52,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:52,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:52,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:53,179 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 [2021-10-13 21:41:53,179 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:53,180 INFO L82 PathProgramCache]: Analyzing trace with hash 746889756, now seen corresponding path program 31 times [2021-10-13 21:41:53,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:53,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285061530] [2021-10-13 21:41:53,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:41:53,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:53,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:53,183 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) [2021-10-13 21:41:53,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 21:41:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:54,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:54,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:54,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:55,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:55,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285061530] [2021-10-13 21:41:55,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285061530] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:55,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:55,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:55,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000097131] [2021-10-13 21:41:55,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:55,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:55,834 INFO L87 Difference]: Start difference. First operand 1640 states and 5591 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:56,905 INFO L93 Difference]: Finished difference Result 2993 states and 9484 transitions. [2021-10-13 21:41:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:56,906 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:41:56,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:56,912 INFO L225 Difference]: With dead ends: 2993 [2021-10-13 21:41:56,912 INFO L226 Difference]: Without dead ends: 2970 [2021-10-13 21:41:56,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1022.0ms TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:41:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2021-10-13 21:41:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1634. [2021-10-13 21:41:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.4133496631965707) internal successors, (5574), 1633 states have internal predecessors, (5574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5574 transitions. [2021-10-13 21:41:56,948 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5574 transitions. Word has length 35 [2021-10-13 21:41:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:56,948 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5574 transitions. [2021-10-13 21:41:56,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5574 transitions. [2021-10-13 21:41:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:41:56,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:56,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:56,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:57,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:41:57,153 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:41:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash 804398126, now seen corresponding path program 32 times [2021-10-13 21:41:57,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:57,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191970508] [2021-10-13 21:41:57,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:41:57,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:57,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:57,156 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:41:57,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 21:41:58,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:41:58,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:58,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:58,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:58,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:59,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:59,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191970508] [2021-10-13 21:41:59,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191970508] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:59,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:59,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:41:59,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225436547] [2021-10-13 21:41:59,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:41:59,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:59,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:41:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:41:59,975 INFO L87 Difference]: Start difference. First operand 1634 states and 5574 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:01,224 INFO L93 Difference]: Finished difference Result 2985 states and 9463 transitions. [2021-10-13 21:42:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:42:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:01,231 INFO L225 Difference]: With dead ends: 2985 [2021-10-13 21:42:01,232 INFO L226 Difference]: Without dead ends: 2930 [2021-10-13 21:42:01,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1163.6ms TimeCoverageRelationStatistics Valid=351, Invalid=909, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:42:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-10-13 21:42:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1606. [2021-10-13 21:42:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 3.42803738317757) internal successors, (5502), 1605 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 5502 transitions. [2021-10-13 21:42:01,271 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 5502 transitions. Word has length 35 [2021-10-13 21:42:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:01,271 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 5502 transitions. [2021-10-13 21:42:01,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 5502 transitions. [2021-10-13 21:42:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:01,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:01,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:01,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:01,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:01,491 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:01,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:01,492 INFO L82 PathProgramCache]: Analyzing trace with hash 124449732, now seen corresponding path program 33 times [2021-10-13 21:42:01,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:01,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255314767] [2021-10-13 21:42:01,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:42:01,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:01,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:01,494 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:01,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 21:42:02,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:42:02,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:02,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:02,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:03,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:04,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:04,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255314767] [2021-10-13 21:42:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255314767] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:04,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:04,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:04,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552563869] [2021-10-13 21:42:04,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:04,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:04,189 INFO L87 Difference]: Start difference. First operand 1606 states and 5502 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:05,500 INFO L93 Difference]: Finished difference Result 3003 states and 9504 transitions. [2021-10-13 21:42:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:42:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:05,508 INFO L225 Difference]: With dead ends: 3003 [2021-10-13 21:42:05,508 INFO L226 Difference]: Without dead ends: 2986 [2021-10-13 21:42:05,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1123.6ms TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:42:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2021-10-13 21:42:05,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1618. [2021-10-13 21:42:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4254792826221396) internal successors, (5539), 1617 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5539 transitions. [2021-10-13 21:42:05,574 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5539 transitions. Word has length 35 [2021-10-13 21:42:05,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:05,574 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5539 transitions. [2021-10-13 21:42:05,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5539 transitions. [2021-10-13 21:42:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:05,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:05,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:05,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:05,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:05,779 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:05,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash -222045652, now seen corresponding path program 34 times [2021-10-13 21:42:05,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:05,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914686161] [2021-10-13 21:42:05,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:42:05,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:05,783 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:05,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 21:42:06,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:42:06,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:06,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:06,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:07,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:08,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:08,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914686161] [2021-10-13 21:42:08,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914686161] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:08,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:08,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:08,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997905390] [2021-10-13 21:42:08,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:08,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:08,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:08,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:08,460 INFO L87 Difference]: Start difference. First operand 1618 states and 5539 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:10,031 INFO L93 Difference]: Finished difference Result 3039 states and 9568 transitions. [2021-10-13 21:42:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:42:10,031 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:10,039 INFO L225 Difference]: With dead ends: 3039 [2021-10-13 21:42:10,039 INFO L226 Difference]: Without dead ends: 3026 [2021-10-13 21:42:10,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1148.1ms TimeCoverageRelationStatistics Valid=409, Invalid=1073, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:42:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-10-13 21:42:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1622. [2021-10-13 21:42:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.421344848858729) internal successors, (5546), 1621 states have internal predecessors, (5546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5546 transitions. [2021-10-13 21:42:10,093 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5546 transitions. Word has length 35 [2021-10-13 21:42:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:10,095 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5546 transitions. [2021-10-13 21:42:10,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5546 transitions. [2021-10-13 21:42:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:10,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:10,101 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:10,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:10,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:10,315 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:10,316 INFO L82 PathProgramCache]: Analyzing trace with hash 158017956, now seen corresponding path program 35 times [2021-10-13 21:42:10,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:10,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015048057] [2021-10-13 21:42:10,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:42:10,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:10,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:10,318 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 21:42:11,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:42:11,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:11,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:11,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:12,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:13,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:13,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015048057] [2021-10-13 21:42:13,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015048057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:13,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:13,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:13,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475573792] [2021-10-13 21:42:13,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:13,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:13,154 INFO L87 Difference]: Start difference. First operand 1622 states and 5546 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:14,807 INFO L93 Difference]: Finished difference Result 3025 states and 9548 transitions. [2021-10-13 21:42:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:42:14,808 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:14,821 INFO L225 Difference]: With dead ends: 3025 [2021-10-13 21:42:14,821 INFO L226 Difference]: Without dead ends: 3002 [2021-10-13 21:42:14,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1214.9ms TimeCoverageRelationStatistics Valid=450, Invalid=1110, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:42:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-10-13 21:42:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1614. [2021-10-13 21:42:14,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.427154370737756) internal successors, (5528), 1613 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5528 transitions. [2021-10-13 21:42:14,870 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5528 transitions. Word has length 35 [2021-10-13 21:42:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:14,870 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 5528 transitions. [2021-10-13 21:42:14,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5528 transitions. [2021-10-13 21:42:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:14,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:14,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:14,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:15,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:15,075 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:15,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -948635648, now seen corresponding path program 36 times [2021-10-13 21:42:15,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:15,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822086811] [2021-10-13 21:42:15,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:42:15,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:15,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:15,078 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:15,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 21:42:16,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:42:16,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:16,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:16,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:17,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:17,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822086811] [2021-10-13 21:42:17,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822086811] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:17,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:17,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:17,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362326687] [2021-10-13 21:42:17,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:17,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:17,893 INFO L87 Difference]: Start difference. First operand 1614 states and 5528 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:19,171 INFO L93 Difference]: Finished difference Result 3029 states and 9542 transitions. [2021-10-13 21:42:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:42:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:19,180 INFO L225 Difference]: With dead ends: 3029 [2021-10-13 21:42:19,180 INFO L226 Difference]: Without dead ends: 3012 [2021-10-13 21:42:19,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1096.5ms TimeCoverageRelationStatistics Valid=367, Invalid=965, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:42:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-10-13 21:42:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1618. [2021-10-13 21:42:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4230055658627085) internal successors, (5535), 1617 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5535 transitions. [2021-10-13 21:42:19,216 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5535 transitions. Word has length 35 [2021-10-13 21:42:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:19,216 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5535 transitions. [2021-10-13 21:42:19,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5535 transitions. [2021-10-13 21:42:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:19,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:19,221 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:19,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-13 21:42:19,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:19,423 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 194273964, now seen corresponding path program 37 times [2021-10-13 21:42:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:19,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670290123] [2021-10-13 21:42:19,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:42:19,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:19,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:19,427 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:19,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-13 21:42:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:42:20,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:20,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:21,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:22,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:22,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670290123] [2021-10-13 21:42:22,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670290123] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:22,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:22,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:22,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323137095] [2021-10-13 21:42:22,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:22,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:22,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:22,274 INFO L87 Difference]: Start difference. First operand 1618 states and 5535 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:23,547 INFO L93 Difference]: Finished difference Result 3033 states and 9550 transitions. [2021-10-13 21:42:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:42:23,548 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:23,556 INFO L225 Difference]: With dead ends: 3033 [2021-10-13 21:42:23,556 INFO L226 Difference]: Without dead ends: 3020 [2021-10-13 21:42:23,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1152.1ms TimeCoverageRelationStatistics Valid=368, Invalid=1114, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:42:23,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2021-10-13 21:42:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 1622. [2021-10-13 21:42:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.418877236273905) internal successors, (5542), 1621 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5542 transitions. [2021-10-13 21:42:23,591 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5542 transitions. Word has length 35 [2021-10-13 21:42:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:23,592 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5542 transitions. [2021-10-13 21:42:23,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5542 transitions. [2021-10-13 21:42:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:23,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:23,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:23,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:23,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:23,795 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:23,796 INFO L82 PathProgramCache]: Analyzing trace with hash -355722186, now seen corresponding path program 38 times [2021-10-13 21:42:23,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:23,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009787004] [2021-10-13 21:42:23,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:42:23,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:23,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:23,798 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:23,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-13 21:42:24,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:42:24,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:24,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:24,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:25,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:26,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:26,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009787004] [2021-10-13 21:42:26,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009787004] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:26,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:26,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:26,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167186816] [2021-10-13 21:42:26,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:26,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:26,463 INFO L87 Difference]: Start difference. First operand 1622 states and 5542 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:28,026 INFO L93 Difference]: Finished difference Result 3019 states and 9530 transitions. [2021-10-13 21:42:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:42:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:28,033 INFO L225 Difference]: With dead ends: 3019 [2021-10-13 21:42:28,033 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:42:28,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1118.6ms TimeCoverageRelationStatistics Valid=378, Invalid=1104, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:42:28,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:42:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1614. [2021-10-13 21:42:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.4246745195288284) internal successors, (5524), 1613 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5524 transitions. [2021-10-13 21:42:28,073 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5524 transitions. Word has length 35 [2021-10-13 21:42:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:28,073 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 5524 transitions. [2021-10-13 21:42:28,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5524 transitions. [2021-10-13 21:42:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:28,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:28,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:28,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:28,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:28,277 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:28,278 INFO L82 PathProgramCache]: Analyzing trace with hash 848413952, now seen corresponding path program 39 times [2021-10-13 21:42:28,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:28,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031659492] [2021-10-13 21:42:28,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:42:28,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:28,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:28,283 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:28,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 21:42:29,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:42:29,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:29,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:29,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:30,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:31,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:31,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031659492] [2021-10-13 21:42:31,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031659492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:31,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:31,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:31,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446724317] [2021-10-13 21:42:31,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:31,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:31,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:31,138 INFO L87 Difference]: Start difference. First operand 1614 states and 5524 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:32,659 INFO L93 Difference]: Finished difference Result 3051 states and 9583 transitions. [2021-10-13 21:42:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:42:32,659 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:32,666 INFO L225 Difference]: With dead ends: 3051 [2021-10-13 21:42:32,667 INFO L226 Difference]: Without dead ends: 3038 [2021-10-13 21:42:32,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1095.1ms TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:42:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-10-13 21:42:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1622. [2021-10-13 21:42:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.421344848858729) internal successors, (5546), 1621 states have internal predecessors, (5546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5546 transitions. [2021-10-13 21:42:32,711 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5546 transitions. Word has length 35 [2021-10-13 21:42:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:32,711 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5546 transitions. [2021-10-13 21:42:32,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5546 transitions. [2021-10-13 21:42:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:32,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:32,714 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:32,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:32,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:32,915 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:32,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1228477560, now seen corresponding path program 40 times [2021-10-13 21:42:32,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:32,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895900866] [2021-10-13 21:42:32,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:42:32,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:32,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:32,922 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:32,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 21:42:34,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:42:34,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:34,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:34,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:34,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:35,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:35,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895900866] [2021-10-13 21:42:35,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895900866] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:35,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:35,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:35,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317735003] [2021-10-13 21:42:35,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:35,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:35,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:35,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:35,711 INFO L87 Difference]: Start difference. First operand 1622 states and 5546 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:37,127 INFO L93 Difference]: Finished difference Result 3053 states and 9583 transitions. [2021-10-13 21:42:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:42:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:37,135 INFO L225 Difference]: With dead ends: 3053 [2021-10-13 21:42:37,135 INFO L226 Difference]: Without dead ends: 3034 [2021-10-13 21:42:37,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1058.1ms TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:42:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2021-10-13 21:42:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1618. [2021-10-13 21:42:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4230055658627085) internal successors, (5535), 1617 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5535 transitions. [2021-10-13 21:42:37,186 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5535 transitions. Word has length 35 [2021-10-13 21:42:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:37,186 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5535 transitions. [2021-10-13 21:42:37,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5535 transitions. [2021-10-13 21:42:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:37,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:37,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:37,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:37,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:37,403 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:37,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1957148348, now seen corresponding path program 41 times [2021-10-13 21:42:37,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:37,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189893041] [2021-10-13 21:42:37,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:42:37,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:37,406 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:37,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-13 21:42:38,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:42:38,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:38,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:38,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:39,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:40,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:40,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189893041] [2021-10-13 21:42:40,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189893041] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:40,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:40,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:40,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627518684] [2021-10-13 21:42:40,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:40,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:40,278 INFO L87 Difference]: Start difference. First operand 1618 states and 5535 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:41,721 INFO L93 Difference]: Finished difference Result 3055 states and 9587 transitions. [2021-10-13 21:42:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:42:41,721 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:41,729 INFO L225 Difference]: With dead ends: 3055 [2021-10-13 21:42:41,730 INFO L226 Difference]: Without dead ends: 3042 [2021-10-13 21:42:41,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1115.4ms TimeCoverageRelationStatistics Valid=362, Invalid=1120, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:42:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-10-13 21:42:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1622. [2021-10-13 21:42:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.418877236273905) internal successors, (5542), 1621 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5542 transitions. [2021-10-13 21:42:41,771 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5542 transitions. Word has length 35 [2021-10-13 21:42:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:41,771 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5542 transitions. [2021-10-13 21:42:41,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5542 transitions. [2021-10-13 21:42:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:41,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:41,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:41,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:41,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:41,976 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1787822798, now seen corresponding path program 42 times [2021-10-13 21:42:41,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:41,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247201319] [2021-10-13 21:42:41,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:42:41,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:41,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:41,982 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:42,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-13 21:42:43,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:42:43,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:43,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:43,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:44,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:44,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:44,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247201319] [2021-10-13 21:42:44,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247201319] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:44,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:44,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:44,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073228838] [2021-10-13 21:42:44,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:44,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:44,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:44,981 INFO L87 Difference]: Start difference. First operand 1622 states and 5542 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:46,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:46,272 INFO L93 Difference]: Finished difference Result 3049 states and 9582 transitions. [2021-10-13 21:42:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:42:46,272 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:46,280 INFO L225 Difference]: With dead ends: 3049 [2021-10-13 21:42:46,281 INFO L226 Difference]: Without dead ends: 3028 [2021-10-13 21:42:46,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1089.6ms TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:42:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2021-10-13 21:42:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1618. [2021-10-13 21:42:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4205318491032775) internal successors, (5531), 1617 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5531 transitions. [2021-10-13 21:42:46,321 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5531 transitions. Word has length 35 [2021-10-13 21:42:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:46,321 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5531 transitions. [2021-10-13 21:42:46,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5531 transitions. [2021-10-13 21:42:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:46,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:46,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:46,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:46,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:46,525 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:46,526 INFO L82 PathProgramCache]: Analyzing trace with hash 748347588, now seen corresponding path program 43 times [2021-10-13 21:42:46,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:46,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134917060] [2021-10-13 21:42:46,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:42:46,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:46,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:46,529 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:46,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-13 21:42:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:42:47,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:47,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:48,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:49,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:49,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134917060] [2021-10-13 21:42:49,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134917060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:49,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:49,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:49,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849921650] [2021-10-13 21:42:49,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:49,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:49,373 INFO L87 Difference]: Start difference. First operand 1618 states and 5531 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:50,651 INFO L93 Difference]: Finished difference Result 3029 states and 9541 transitions. [2021-10-13 21:42:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:42:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:50,659 INFO L225 Difference]: With dead ends: 3029 [2021-10-13 21:42:50,659 INFO L226 Difference]: Without dead ends: 3014 [2021-10-13 21:42:50,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1012.9ms TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:42:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2021-10-13 21:42:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1624. [2021-10-13 21:42:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 3.414664202094886) internal successors, (5542), 1623 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5542 transitions. [2021-10-13 21:42:50,700 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5542 transitions. Word has length 35 [2021-10-13 21:42:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:50,701 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 5542 transitions. [2021-10-13 21:42:50,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5542 transitions. [2021-10-13 21:42:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:50,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:50,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:50,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:50,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:50,906 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:50,907 INFO L82 PathProgramCache]: Analyzing trace with hash 684892758, now seen corresponding path program 44 times [2021-10-13 21:42:50,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:50,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038724039] [2021-10-13 21:42:50,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:42:50,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:50,910 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:50,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-13 21:42:52,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:42:52,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:52,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:52,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:53,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:53,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038724039] [2021-10-13 21:42:53,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038724039] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:53,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:53,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:53,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139261432] [2021-10-13 21:42:53,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:53,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:53,788 INFO L87 Difference]: Start difference. First operand 1624 states and 5542 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:54,975 INFO L93 Difference]: Finished difference Result 3021 states and 9530 transitions. [2021-10-13 21:42:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:42:54,976 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:54,984 INFO L225 Difference]: With dead ends: 3021 [2021-10-13 21:42:54,984 INFO L226 Difference]: Without dead ends: 2990 [2021-10-13 21:42:54,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1050.4ms TimeCoverageRelationStatistics Valid=369, Invalid=963, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:42:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-10-13 21:42:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1610. [2021-10-13 21:42:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1609 states have (on average 3.4263517712865132) internal successors, (5513), 1609 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 5513 transitions. [2021-10-13 21:42:55,024 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 5513 transitions. Word has length 35 [2021-10-13 21:42:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:55,024 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 5513 transitions. [2021-10-13 21:42:55,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:55,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 5513 transitions. [2021-10-13 21:42:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:55,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:55,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:55,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:55,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:55,248 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash 895999374, now seen corresponding path program 45 times [2021-10-13 21:42:55,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:55,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464952132] [2021-10-13 21:42:55,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:42:55,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:55,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:55,252 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:55,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-13 21:42:56,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:42:56,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:56,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:42:56,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:57,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:42:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:42:58,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:42:58,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464952132] [2021-10-13 21:42:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464952132] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:42:58,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:42:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:42:58,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363383013] [2021-10-13 21:42:58,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:42:58,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:42:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:42:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:42:58,200 INFO L87 Difference]: Start difference. First operand 1610 states and 5513 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:59,337 INFO L93 Difference]: Finished difference Result 2957 states and 9397 transitions. [2021-10-13 21:42:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:42:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:42:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:59,344 INFO L225 Difference]: With dead ends: 2957 [2021-10-13 21:42:59,344 INFO L226 Difference]: Without dead ends: 2940 [2021-10-13 21:42:59,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1023.9ms TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:42:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2021-10-13 21:42:59,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1618. [2021-10-13 21:42:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4205318491032775) internal successors, (5531), 1617 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5531 transitions. [2021-10-13 21:42:59,378 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5531 transitions. Word has length 35 [2021-10-13 21:42:59,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:59,378 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5531 transitions. [2021-10-13 21:42:59,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:42:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5531 transitions. [2021-10-13 21:42:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:42:59,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:59,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:59,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:59,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:59,582 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:42:59,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:59,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2038908986, now seen corresponding path program 46 times [2021-10-13 21:42:59,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:59,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616479216] [2021-10-13 21:42:59,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:42:59,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:59,586 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:42:59,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-13 21:43:01,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:43:01,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:01,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:01,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:01,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:02,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:02,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616479216] [2021-10-13 21:43:02,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616479216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:02,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:02,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:02,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814657760] [2021-10-13 21:43:02,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:02,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:02,728 INFO L87 Difference]: Start difference. First operand 1618 states and 5531 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:04,112 INFO L93 Difference]: Finished difference Result 2987 states and 9449 transitions. [2021-10-13 21:43:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 21:43:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:04,119 INFO L225 Difference]: With dead ends: 2987 [2021-10-13 21:43:04,119 INFO L226 Difference]: Without dead ends: 2974 [2021-10-13 21:43:04,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1150.5ms TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 21:43:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-10-13 21:43:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1622. [2021-10-13 21:43:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.4164096236890806) internal successors, (5538), 1621 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5538 transitions. [2021-10-13 21:43:04,168 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5538 transitions. Word has length 35 [2021-10-13 21:43:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:04,169 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5538 transitions. [2021-10-13 21:43:04,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5538 transitions. [2021-10-13 21:43:04,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:04,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:04,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:04,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:04,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:04,386 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1488912836, now seen corresponding path program 47 times [2021-10-13 21:43:04,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:04,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8494192] [2021-10-13 21:43:04,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:43:04,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:04,390 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:04,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-13 21:43:05,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:43:05,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:05,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:05,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:06,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:07,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:07,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8494192] [2021-10-13 21:43:07,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8494192] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:07,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:07,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:07,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741169107] [2021-10-13 21:43:07,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:07,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:07,483 INFO L87 Difference]: Start difference. First operand 1622 states and 5538 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:08,901 INFO L93 Difference]: Finished difference Result 2973 states and 9429 transitions. [2021-10-13 21:43:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 21:43:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:08,909 INFO L225 Difference]: With dead ends: 2973 [2021-10-13 21:43:08,910 INFO L226 Difference]: Without dead ends: 2948 [2021-10-13 21:43:08,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1234.0ms TimeCoverageRelationStatistics Valid=409, Invalid=1231, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 21:43:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2021-10-13 21:43:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1614. [2021-10-13 21:43:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.422194668319901) internal successors, (5520), 1613 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5520 transitions. [2021-10-13 21:43:08,946 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5520 transitions. Word has length 35 [2021-10-13 21:43:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:08,947 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 5520 transitions. [2021-10-13 21:43:08,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:08,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5520 transitions. [2021-10-13 21:43:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:08,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:08,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:08,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:09,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:09,151 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:09,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1715576956, now seen corresponding path program 48 times [2021-10-13 21:43:09,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:09,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174032491] [2021-10-13 21:43:09,153 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:43:09,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:09,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:09,154 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:09,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-13 21:43:10,783 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:43:10,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:10,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:10,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:11,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:12,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:12,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174032491] [2021-10-13 21:43:12,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174032491] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:12,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:12,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:12,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427556384] [2021-10-13 21:43:12,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:12,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:12,395 INFO L87 Difference]: Start difference. First operand 1614 states and 5520 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:13,826 INFO L93 Difference]: Finished difference Result 2969 states and 9422 transitions. [2021-10-13 21:43:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 21:43:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:13,835 INFO L225 Difference]: With dead ends: 2969 [2021-10-13 21:43:13,835 INFO L226 Difference]: Without dead ends: 2956 [2021-10-13 21:43:13,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1170.5ms TimeCoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 21:43:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-10-13 21:43:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1622. [2021-10-13 21:43:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.4164096236890806) internal successors, (5538), 1621 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5538 transitions. [2021-10-13 21:43:13,877 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5538 transitions. Word has length 35 [2021-10-13 21:43:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:13,877 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5538 transitions. [2021-10-13 21:43:13,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5538 transitions. [2021-10-13 21:43:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:13,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:13,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:13,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:14,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:14,081 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:14,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:14,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2029394190, now seen corresponding path program 49 times [2021-10-13 21:43:14,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:14,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088334607] [2021-10-13 21:43:14,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:43:14,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:14,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:14,084 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:14,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-13 21:43:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:15,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:15,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:16,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:17,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:17,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088334607] [2021-10-13 21:43:17,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088334607] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:17,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:17,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:17,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532446411] [2021-10-13 21:43:17,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:17,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:17,709 INFO L87 Difference]: Start difference. First operand 1622 states and 5538 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:19,251 INFO L93 Difference]: Finished difference Result 2973 states and 9426 transitions. [2021-10-13 21:43:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 21:43:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:19,260 INFO L225 Difference]: With dead ends: 2973 [2021-10-13 21:43:19,260 INFO L226 Difference]: Without dead ends: 2952 [2021-10-13 21:43:19,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1399.1ms TimeCoverageRelationStatistics Valid=401, Invalid=1239, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 21:43:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2021-10-13 21:43:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1618. [2021-10-13 21:43:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.418058132343847) internal successors, (5527), 1617 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5527 transitions. [2021-10-13 21:43:19,306 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5527 transitions. Word has length 35 [2021-10-13 21:43:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:19,306 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5527 transitions. [2021-10-13 21:43:19,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5527 transitions. [2021-10-13 21:43:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:19,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:19,310 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:19,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-10-13 21:43:19,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:19,511 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:19,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:19,511 INFO L82 PathProgramCache]: Analyzing trace with hash -79265470, now seen corresponding path program 50 times [2021-10-13 21:43:19,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:19,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384647605] [2021-10-13 21:43:19,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:43:19,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:19,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:19,514 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:19,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-13 21:43:21,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:43:21,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:21,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:21,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:22,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:23,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:23,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384647605] [2021-10-13 21:43:23,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384647605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:23,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:23,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:23,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646184920] [2021-10-13 21:43:23,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:23,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:23,237 INFO L87 Difference]: Start difference. First operand 1618 states and 5527 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:24,669 INFO L93 Difference]: Finished difference Result 2939 states and 9363 transitions. [2021-10-13 21:43:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:43:24,669 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:24,676 INFO L225 Difference]: With dead ends: 2939 [2021-10-13 21:43:24,676 INFO L226 Difference]: Without dead ends: 2906 [2021-10-13 21:43:24,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1098.6ms TimeCoverageRelationStatistics Valid=380, Invalid=952, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:43:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2021-10-13 21:43:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1610. [2021-10-13 21:43:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1609 states have (on average 3.4238657551274083) internal successors, (5509), 1609 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 5509 transitions. [2021-10-13 21:43:24,716 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 5509 transitions. Word has length 35 [2021-10-13 21:43:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:24,716 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 5509 transitions. [2021-10-13 21:43:24,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 5509 transitions. [2021-10-13 21:43:24,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:24,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:24,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:24,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:24,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:24,920 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:24,920 INFO L82 PathProgramCache]: Analyzing trace with hash 423466742, now seen corresponding path program 51 times [2021-10-13 21:43:24,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:24,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081417045] [2021-10-13 21:43:24,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:43:24,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:24,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:24,923 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:24,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-13 21:43:26,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:43:26,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:26,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:26,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:27,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:28,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:28,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081417045] [2021-10-13 21:43:28,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081417045] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:28,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:28,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:28,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404309774] [2021-10-13 21:43:28,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:28,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:28,608 INFO L87 Difference]: Start difference. First operand 1610 states and 5509 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:30,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:30,055 INFO L93 Difference]: Finished difference Result 3047 states and 9595 transitions. [2021-10-13 21:43:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:43:30,056 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:30,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:30,063 INFO L225 Difference]: With dead ends: 3047 [2021-10-13 21:43:30,063 INFO L226 Difference]: Without dead ends: 3034 [2021-10-13 21:43:30,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1321.9ms TimeCoverageRelationStatistics Valid=396, Invalid=1086, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:43:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2021-10-13 21:43:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1622. [2021-10-13 21:43:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.421344848858729) internal successors, (5546), 1621 states have internal predecessors, (5546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:30,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5546 transitions. [2021-10-13 21:43:30,102 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5546 transitions. Word has length 35 [2021-10-13 21:43:30,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:30,103 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5546 transitions. [2021-10-13 21:43:30,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:30,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5546 transitions. [2021-10-13 21:43:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:30,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:30,107 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:30,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-13 21:43:30,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:30,308 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:30,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:30,308 INFO L82 PathProgramCache]: Analyzing trace with hash 803530350, now seen corresponding path program 52 times [2021-10-13 21:43:30,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:30,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941823655] [2021-10-13 21:43:30,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:43:30,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:30,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:30,310 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:30,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-13 21:43:32,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:43:32,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:32,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:32,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:32,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:33,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:33,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941823655] [2021-10-13 21:43:33,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941823655] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:33,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:33,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:33,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988766170] [2021-10-13 21:43:33,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:33,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:33,757 INFO L87 Difference]: Start difference. First operand 1622 states and 5546 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:35,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:35,442 INFO L93 Difference]: Finished difference Result 3061 states and 9617 transitions. [2021-10-13 21:43:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:43:35,443 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:35,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:35,451 INFO L225 Difference]: With dead ends: 3061 [2021-10-13 21:43:35,451 INFO L226 Difference]: Without dead ends: 3042 [2021-10-13 21:43:35,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1346.0ms TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:43:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-10-13 21:43:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1618. [2021-10-13 21:43:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4230055658627085) internal successors, (5535), 1617 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5535 transitions. [2021-10-13 21:43:35,507 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5535 transitions. Word has length 35 [2021-10-13 21:43:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:35,507 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5535 transitions. [2021-10-13 21:43:35,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5535 transitions. [2021-10-13 21:43:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:35,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:35,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:35,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:35,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:35,726 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:35,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1912871738, now seen corresponding path program 53 times [2021-10-13 21:43:35,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:35,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827279479] [2021-10-13 21:43:35,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:43:35,728 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:35,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:35,729 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:35,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-13 21:43:37,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:43:37,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:37,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:37,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:38,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:39,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:39,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827279479] [2021-10-13 21:43:39,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827279479] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:39,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:39,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:39,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987104589] [2021-10-13 21:43:39,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:39,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:39,326 INFO L87 Difference]: Start difference. First operand 1618 states and 5535 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:40,977 INFO L93 Difference]: Finished difference Result 3045 states and 9571 transitions. [2021-10-13 21:43:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 21:43:40,978 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:40,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:40,985 INFO L225 Difference]: With dead ends: 3045 [2021-10-13 21:43:40,986 INFO L226 Difference]: Without dead ends: 3032 [2021-10-13 21:43:40,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1381.5ms TimeCoverageRelationStatistics Valid=381, Invalid=1179, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:43:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-10-13 21:43:41,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1622. [2021-10-13 21:43:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.418877236273905) internal successors, (5542), 1621 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5542 transitions. [2021-10-13 21:43:41,036 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5542 transitions. Word has length 35 [2021-10-13 21:43:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:41,036 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5542 transitions. [2021-10-13 21:43:41,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5542 transitions. [2021-10-13 21:43:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:41,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:41,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:41,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:41,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:41,240 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:41,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1362875588, now seen corresponding path program 54 times [2021-10-13 21:43:41,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:41,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488462289] [2021-10-13 21:43:41,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:43:41,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:41,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:41,244 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:41,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-13 21:43:42,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:43:42,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:42,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:42,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:43,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:44,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:44,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488462289] [2021-10-13 21:43:44,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488462289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:44,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:44,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:44,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073936471] [2021-10-13 21:43:44,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:44,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:44,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:44,547 INFO L87 Difference]: Start difference. First operand 1622 states and 5542 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:46,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:46,057 INFO L93 Difference]: Finished difference Result 3039 states and 9566 transitions. [2021-10-13 21:43:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 21:43:46,057 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:46,064 INFO L225 Difference]: With dead ends: 3039 [2021-10-13 21:43:46,064 INFO L226 Difference]: Without dead ends: 3018 [2021-10-13 21:43:46,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1197.8ms TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:43:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-10-13 21:43:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1618. [2021-10-13 21:43:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4205318491032775) internal successors, (5531), 1617 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5531 transitions. [2021-10-13 21:43:46,100 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5531 transitions. Word has length 35 [2021-10-13 21:43:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:46,100 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5531 transitions. [2021-10-13 21:43:46,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5531 transitions. [2021-10-13 21:43:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:46,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:46,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:46,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:46,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:46,304 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash 323400378, now seen corresponding path program 55 times [2021-10-13 21:43:46,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:46,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623637564] [2021-10-13 21:43:46,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:43:46,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:46,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:46,307 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:46,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-13 21:43:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:48,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:48,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:48,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:49,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:49,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623637564] [2021-10-13 21:43:49,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623637564] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:49,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:49,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:49,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312270703] [2021-10-13 21:43:49,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:49,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:49,860 INFO L87 Difference]: Start difference. First operand 1618 states and 5531 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:51,286 INFO L93 Difference]: Finished difference Result 3049 states and 9577 transitions. [2021-10-13 21:43:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:43:51,286 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:51,293 INFO L225 Difference]: With dead ends: 3049 [2021-10-13 21:43:51,293 INFO L226 Difference]: Without dead ends: 3034 [2021-10-13 21:43:51,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1105.4ms TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:43:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2021-10-13 21:43:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1624. [2021-10-13 21:43:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 3.414664202094886) internal successors, (5542), 1623 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5542 transitions. [2021-10-13 21:43:51,377 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5542 transitions. Word has length 35 [2021-10-13 21:43:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:51,377 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 5542 transitions. [2021-10-13 21:43:51,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5542 transitions. [2021-10-13 21:43:51,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:51,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:51,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:51,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:51,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:51,582 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:51,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:51,584 INFO L82 PathProgramCache]: Analyzing trace with hash 259945548, now seen corresponding path program 56 times [2021-10-13 21:43:51,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:51,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65985150] [2021-10-13 21:43:51,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:43:51,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:51,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:51,587 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:51,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-13 21:43:53,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:43:53,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:53,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:53,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:53,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:54,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:54,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65985150] [2021-10-13 21:43:54,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65985150] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:54,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:54,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:43:54,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327014702] [2021-10-13 21:43:54,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:43:54,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:43:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:43:54,877 INFO L87 Difference]: Start difference. First operand 1624 states and 5542 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:56,514 INFO L93 Difference]: Finished difference Result 3041 states and 9566 transitions. [2021-10-13 21:43:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:43:56,514 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:43:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:56,522 INFO L225 Difference]: With dead ends: 3041 [2021-10-13 21:43:56,522 INFO L226 Difference]: Without dead ends: 3014 [2021-10-13 21:43:56,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1113.8ms TimeCoverageRelationStatistics Valid=386, Invalid=1020, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:43:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2021-10-13 21:43:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1614. [2021-10-13 21:43:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.422194668319901) internal successors, (5520), 1613 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5520 transitions. [2021-10-13 21:43:56,556 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5520 transitions. Word has length 35 [2021-10-13 21:43:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:56,556 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 5520 transitions. [2021-10-13 21:43:56,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:43:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5520 transitions. [2021-10-13 21:43:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:43:56,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:56,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:56,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-13 21:43:56,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:43:56,761 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:43:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:56,761 INFO L82 PathProgramCache]: Analyzing trace with hash 309808108, now seen corresponding path program 57 times [2021-10-13 21:43:56,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:56,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142090328] [2021-10-13 21:43:56,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:43:56,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:56,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:56,764 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:43:56,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-13 21:43:58,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:43:58,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:43:58,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:43:58,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:43:59,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:00,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:00,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142090328] [2021-10-13 21:44:00,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142090328] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:00,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:00,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:00,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817569920] [2021-10-13 21:44:00,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:00,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:00,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:00,152 INFO L87 Difference]: Start difference. First operand 1614 states and 5520 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:01,747 INFO L93 Difference]: Finished difference Result 3023 states and 9529 transitions. [2021-10-13 21:44:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 21:44:01,748 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:01,754 INFO L225 Difference]: With dead ends: 3023 [2021-10-13 21:44:01,755 INFO L226 Difference]: Without dead ends: 3010 [2021-10-13 21:44:01,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1170.4ms TimeCoverageRelationStatistics Valid=383, Invalid=1177, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:44:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-10-13 21:44:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1622. [2021-10-13 21:44:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.4164096236890806) internal successors, (5538), 1621 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5538 transitions. [2021-10-13 21:44:01,790 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5538 transitions. Word has length 35 [2021-10-13 21:44:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:01,790 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5538 transitions. [2021-10-13 21:44:01,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5538 transitions. [2021-10-13 21:44:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:01,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:01,821 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:01,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-10-13 21:44:02,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:02,021 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:02,022 INFO L82 PathProgramCache]: Analyzing trace with hash -240188042, now seen corresponding path program 58 times [2021-10-13 21:44:02,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:02,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688489432] [2021-10-13 21:44:02,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:44:02,023 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:02,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:02,024 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:02,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-13 21:44:03,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:44:03,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:03,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:03,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:04,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:05,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:05,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688489432] [2021-10-13 21:44:05,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688489432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:05,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:05,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:05,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901941280] [2021-10-13 21:44:05,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:05,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:05,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:05,575 INFO L87 Difference]: Start difference. First operand 1622 states and 5538 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:07,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:07,085 INFO L93 Difference]: Finished difference Result 3027 states and 9533 transitions. [2021-10-13 21:44:07,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 21:44:07,085 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:07,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:07,092 INFO L225 Difference]: With dead ends: 3027 [2021-10-13 21:44:07,092 INFO L226 Difference]: Without dead ends: 3006 [2021-10-13 21:44:07,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1173.5ms TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:44:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-10-13 21:44:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1618. [2021-10-13 21:44:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.418058132343847) internal successors, (5527), 1617 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5527 transitions. [2021-10-13 21:44:07,130 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5527 transitions. Word has length 35 [2021-10-13 21:44:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:07,130 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5527 transitions. [2021-10-13 21:44:07,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5527 transitions. [2021-10-13 21:44:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:07,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:07,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:07,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:07,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:07,335 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1946119594, now seen corresponding path program 59 times [2021-10-13 21:44:07,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:07,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633880228] [2021-10-13 21:44:07,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:44:07,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:07,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:07,339 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:07,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-13 21:44:09,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:44:09,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:09,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:09,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:10,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:10,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633880228] [2021-10-13 21:44:10,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633880228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:10,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:10,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:10,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257370165] [2021-10-13 21:44:10,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:10,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:10,936 INFO L87 Difference]: Start difference. First operand 1618 states and 5527 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:12,326 INFO L93 Difference]: Finished difference Result 3013 states and 9513 transitions. [2021-10-13 21:44:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:44:12,327 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:12,333 INFO L225 Difference]: With dead ends: 3013 [2021-10-13 21:44:12,334 INFO L226 Difference]: Without dead ends: 2984 [2021-10-13 21:44:12,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1128.5ms TimeCoverageRelationStatistics Valid=390, Invalid=1016, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:44:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-10-13 21:44:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1614. [2021-10-13 21:44:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.4197148171109735) internal successors, (5516), 1613 states have internal predecessors, (5516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5516 transitions. [2021-10-13 21:44:12,371 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5516 transitions. Word has length 35 [2021-10-13 21:44:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:12,371 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 5516 transitions. [2021-10-13 21:44:12,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5516 transitions. [2021-10-13 21:44:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:12,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:12,374 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:12,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:12,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:12,575 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:12,575 INFO L82 PathProgramCache]: Analyzing trace with hash -620539642, now seen corresponding path program 60 times [2021-10-13 21:44:12,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:12,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670679715] [2021-10-13 21:44:12,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:44:12,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:12,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:12,578 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:12,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-13 21:44:14,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:44:14,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:14,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:14,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:15,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:16,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:16,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670679715] [2021-10-13 21:44:16,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670679715] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:16,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:16,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:16,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651526709] [2021-10-13 21:44:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:16,073 INFO L87 Difference]: Start difference. First operand 1614 states and 5516 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:17,490 INFO L93 Difference]: Finished difference Result 3005 states and 9494 transitions. [2021-10-13 21:44:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:44:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:17,497 INFO L225 Difference]: With dead ends: 3005 [2021-10-13 21:44:17,497 INFO L226 Difference]: Without dead ends: 2990 [2021-10-13 21:44:17,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1183.8ms TimeCoverageRelationStatistics Valid=460, Invalid=1100, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:44:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-10-13 21:44:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1626. [2021-10-13 21:44:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4116923076923076) internal successors, (5544), 1625 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5544 transitions. [2021-10-13 21:44:17,531 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5544 transitions. Word has length 35 [2021-10-13 21:44:17,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:17,531 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5544 transitions. [2021-10-13 21:44:17,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5544 transitions. [2021-10-13 21:44:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:17,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:17,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:17,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:17,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:17,735 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:17,736 INFO L82 PathProgramCache]: Analyzing trace with hash -683994472, now seen corresponding path program 61 times [2021-10-13 21:44:17,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:17,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460404269] [2021-10-13 21:44:17,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:44:17,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:17,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:17,738 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:17,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-13 21:44:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:44:19,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:19,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:20,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:21,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:21,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460404269] [2021-10-13 21:44:21,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460404269] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:21,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:21,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:21,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553086890] [2021-10-13 21:44:21,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:21,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:21,371 INFO L87 Difference]: Start difference. First operand 1626 states and 5544 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:22,806 INFO L93 Difference]: Finished difference Result 2995 states and 9470 transitions. [2021-10-13 21:44:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:44:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:22,813 INFO L225 Difference]: With dead ends: 2995 [2021-10-13 21:44:22,813 INFO L226 Difference]: Without dead ends: 2972 [2021-10-13 21:44:22,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1181.2ms TimeCoverageRelationStatistics Valid=427, Invalid=1055, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:44:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-10-13 21:44:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1620. [2021-10-13 21:44:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 3.413835701050031) internal successors, (5527), 1619 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 5527 transitions. [2021-10-13 21:44:22,850 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 5527 transitions. Word has length 35 [2021-10-13 21:44:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:22,850 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 5527 transitions. [2021-10-13 21:44:22,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 5527 transitions. [2021-10-13 21:44:22,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:22,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:22,854 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:22,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:23,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:23,070 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:23,071 INFO L82 PathProgramCache]: Analyzing trace with hash -454461116, now seen corresponding path program 62 times [2021-10-13 21:44:23,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:23,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148124250] [2021-10-13 21:44:23,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:44:23,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:23,073 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:23,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-13 21:44:25,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:44:25,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:25,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:25,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:25,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:26,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:26,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148124250] [2021-10-13 21:44:26,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148124250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:26,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:26,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:26,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597149861] [2021-10-13 21:44:26,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:26,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:26,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:26,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:26,854 INFO L87 Difference]: Start difference. First operand 1620 states and 5527 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:28,270 INFO L93 Difference]: Finished difference Result 2971 states and 9429 transitions. [2021-10-13 21:44:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:44:28,270 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:28,277 INFO L225 Difference]: With dead ends: 2971 [2021-10-13 21:44:28,277 INFO L226 Difference]: Without dead ends: 2932 [2021-10-13 21:44:28,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1151.6ms TimeCoverageRelationStatistics Valid=431, Invalid=1051, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:44:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-10-13 21:44:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1606. [2021-10-13 21:44:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 3.425545171339564) internal successors, (5498), 1605 states have internal predecessors, (5498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 5498 transitions. [2021-10-13 21:44:28,311 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 5498 transitions. Word has length 35 [2021-10-13 21:44:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:28,311 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 5498 transitions. [2021-10-13 21:44:28,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 5498 transitions. [2021-10-13 21:44:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:28,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:28,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:28,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:28,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:28,515 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:28,515 INFO L82 PathProgramCache]: Analyzing trace with hash 987361024, now seen corresponding path program 63 times [2021-10-13 21:44:28,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:28,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515988701] [2021-10-13 21:44:28,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:44:28,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:28,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:28,518 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:28,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-13 21:44:30,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:44:30,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:30,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:30,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:31,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:32,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:32,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515988701] [2021-10-13 21:44:32,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515988701] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:32,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:32,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:32,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611070386] [2021-10-13 21:44:32,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:32,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:32,152 INFO L87 Difference]: Start difference. First operand 1606 states and 5498 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:33,341 INFO L93 Difference]: Finished difference Result 3079 states and 9677 transitions. [2021-10-13 21:44:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:44:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:33,349 INFO L225 Difference]: With dead ends: 3079 [2021-10-13 21:44:33,349 INFO L226 Difference]: Without dead ends: 3066 [2021-10-13 21:44:33,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1041.5ms TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:44:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-10-13 21:44:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 1634. [2021-10-13 21:44:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.4237599510104104) internal successors, (5591), 1633 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5591 transitions. [2021-10-13 21:44:33,384 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5591 transitions. Word has length 35 [2021-10-13 21:44:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:33,384 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5591 transitions. [2021-10-13 21:44:33,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5591 transitions. [2021-10-13 21:44:33,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:33,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:33,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:33,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-10-13 21:44:33,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:33,589 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:33,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:33,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1367424632, now seen corresponding path program 64 times [2021-10-13 21:44:33,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:33,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260940319] [2021-10-13 21:44:33,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:44:33,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:33,592 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:33,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-13 21:44:35,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:44:35,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:35,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:35,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:36,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:37,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:37,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260940319] [2021-10-13 21:44:37,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260940319] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:37,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:37,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:37,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267482230] [2021-10-13 21:44:37,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:37,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:37,424 INFO L87 Difference]: Start difference. First operand 1634 states and 5591 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:38,936 INFO L93 Difference]: Finished difference Result 3081 states and 9677 transitions. [2021-10-13 21:44:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:44:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:38,945 INFO L225 Difference]: With dead ends: 3081 [2021-10-13 21:44:38,945 INFO L226 Difference]: Without dead ends: 3062 [2021-10-13 21:44:38,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1096.7ms TimeCoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:44:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-10-13 21:44:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 1630. [2021-10-13 21:44:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.425414364640884) internal successors, (5580), 1629 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5580 transitions. [2021-10-13 21:44:38,992 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5580 transitions. Word has length 35 [2021-10-13 21:44:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:38,993 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5580 transitions. [2021-10-13 21:44:38,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5580 transitions. [2021-10-13 21:44:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:38,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:38,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:39,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:39,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:39,197 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:39,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1818201276, now seen corresponding path program 65 times [2021-10-13 21:44:39,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:39,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098012623] [2021-10-13 21:44:39,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:44:39,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:39,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:39,200 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:39,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-13 21:44:41,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:44:41,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:41,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:41,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:42,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:43,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:43,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098012623] [2021-10-13 21:44:43,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098012623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:43,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:43,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:43,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883079390] [2021-10-13 21:44:43,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:43,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:43,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:43,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:43,365 INFO L87 Difference]: Start difference. First operand 1630 states and 5580 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:44,700 INFO L93 Difference]: Finished difference Result 3055 states and 9635 transitions. [2021-10-13 21:44:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:44:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:44,708 INFO L225 Difference]: With dead ends: 3055 [2021-10-13 21:44:44,708 INFO L226 Difference]: Without dead ends: 3042 [2021-10-13 21:44:44,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1232.3ms TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:44:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-10-13 21:44:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1634. [2021-10-13 21:44:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.421310471524801) internal successors, (5587), 1633 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5587 transitions. [2021-10-13 21:44:44,745 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5587 transitions. Word has length 35 [2021-10-13 21:44:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:44,745 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5587 transitions. [2021-10-13 21:44:44,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5587 transitions. [2021-10-13 21:44:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:44,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:44,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:44,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:44,948 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1926769870, now seen corresponding path program 66 times [2021-10-13 21:44:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:44,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439659285] [2021-10-13 21:44:44,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:44:44,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:44,951 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:44,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-13 21:44:47,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:44:47,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:47,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:47,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:47,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:48,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:48,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439659285] [2021-10-13 21:44:48,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439659285] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:48,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:48,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:48,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248319724] [2021-10-13 21:44:48,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:48,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:48,703 INFO L87 Difference]: Start difference. First operand 1634 states and 5587 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:49,905 INFO L93 Difference]: Finished difference Result 3059 states and 9639 transitions. [2021-10-13 21:44:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:44:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:49,913 INFO L225 Difference]: With dead ends: 3059 [2021-10-13 21:44:49,913 INFO L226 Difference]: Without dead ends: 3038 [2021-10-13 21:44:49,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1087.8ms TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:44:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-10-13 21:44:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1630. [2021-10-13 21:44:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.4229588704726828) internal successors, (5576), 1629 states have internal predecessors, (5576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5576 transitions. [2021-10-13 21:44:49,988 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5576 transitions. Word has length 35 [2021-10-13 21:44:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:49,988 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5576 transitions. [2021-10-13 21:44:49,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5576 transitions. [2021-10-13 21:44:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:49,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:49,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:50,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:50,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:50,206 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash 887294660, now seen corresponding path program 67 times [2021-10-13 21:44:50,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:50,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889952928] [2021-10-13 21:44:50,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:44:50,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:50,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:50,209 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:50,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-13 21:44:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:44:52,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:52,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:52,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:53,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:53,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889952928] [2021-10-13 21:44:53,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889952928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:53,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:53,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:53,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713668964] [2021-10-13 21:44:53,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:53,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:53,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:53,845 INFO L87 Difference]: Start difference. First operand 1630 states and 5576 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:55,237 INFO L93 Difference]: Finished difference Result 3083 states and 9676 transitions. [2021-10-13 21:44:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:44:55,238 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:44:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:55,244 INFO L225 Difference]: With dead ends: 3083 [2021-10-13 21:44:55,244 INFO L226 Difference]: Without dead ends: 3068 [2021-10-13 21:44:55,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1031.5ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:44:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-10-13 21:44:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 1636. [2021-10-13 21:44:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 3.417125382262997) internal successors, (5587), 1635 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 5587 transitions. [2021-10-13 21:44:55,279 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 5587 transitions. Word has length 35 [2021-10-13 21:44:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:55,279 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 5587 transitions. [2021-10-13 21:44:55,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:44:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 5587 transitions. [2021-10-13 21:44:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:44:55,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:55,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:55,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-13 21:44:55,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:44:55,483 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:44:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:55,484 INFO L82 PathProgramCache]: Analyzing trace with hash 823839830, now seen corresponding path program 68 times [2021-10-13 21:44:55,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:55,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167362974] [2021-10-13 21:44:55,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:44:55,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:55,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:55,487 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:44:55,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-13 21:44:57,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:44:57,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:57,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:57,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:58,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:59,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:59,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167362974] [2021-10-13 21:44:59,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167362974] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:59,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:59,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:44:59,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101328980] [2021-10-13 21:44:59,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:44:59,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:44:59,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:44:59,266 INFO L87 Difference]: Start difference. First operand 1636 states and 5587 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:00,526 INFO L93 Difference]: Finished difference Result 3077 states and 9659 transitions. [2021-10-13 21:45:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:00,534 INFO L225 Difference]: With dead ends: 3077 [2021-10-13 21:45:00,534 INFO L226 Difference]: Without dead ends: 3050 [2021-10-13 21:45:00,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1033.0ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:00,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2021-10-13 21:45:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 1626. [2021-10-13 21:45:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4246153846153846) internal successors, (5565), 1625 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5565 transitions. [2021-10-13 21:45:00,615 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5565 transitions. Word has length 35 [2021-10-13 21:45:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:00,616 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5565 transitions. [2021-10-13 21:45:00,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5565 transitions. [2021-10-13 21:45:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:00,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:00,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:00,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2021-10-13 21:45:00,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:00,835 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash -69969700, now seen corresponding path program 69 times [2021-10-13 21:45:00,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:00,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241231245] [2021-10-13 21:45:00,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:45:00,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:00,837 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:00,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-13 21:45:03,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:45:03,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:03,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:03,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:03,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:04,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:04,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241231245] [2021-10-13 21:45:04,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241231245] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:04,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:04,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:04,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340177427] [2021-10-13 21:45:04,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:04,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:04,684 INFO L87 Difference]: Start difference. First operand 1626 states and 5565 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:06,198 INFO L93 Difference]: Finished difference Result 3019 states and 9561 transitions. [2021-10-13 21:45:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:06,199 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:06,206 INFO L225 Difference]: With dead ends: 3019 [2021-10-13 21:45:06,206 INFO L226 Difference]: Without dead ends: 3006 [2021-10-13 21:45:06,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1117.2ms TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-10-13 21:45:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1638. [2021-10-13 21:45:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1637 states have (on average 3.417226634086744) internal successors, (5594), 1637 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 5594 transitions. [2021-10-13 21:45:06,254 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 5594 transitions. Word has length 35 [2021-10-13 21:45:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:06,254 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 5594 transitions. [2021-10-13 21:45:06,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 5594 transitions. [2021-10-13 21:45:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:06,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:06,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:06,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:06,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:06,459 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:06,460 INFO L82 PathProgramCache]: Analyzing trace with hash 310093908, now seen corresponding path program 70 times [2021-10-13 21:45:06,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:06,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402222929] [2021-10-13 21:45:06,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:45:06,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:06,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:06,462 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:06,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-13 21:45:08,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:45:08,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:08,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:08,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:09,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:10,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:10,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402222929] [2021-10-13 21:45:10,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402222929] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:10,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:10,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:10,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864896012] [2021-10-13 21:45:10,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:10,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:10,397 INFO L87 Difference]: Start difference. First operand 1638 states and 5594 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:11,881 INFO L93 Difference]: Finished difference Result 3021 states and 9561 transitions. [2021-10-13 21:45:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:11,881 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:11,889 INFO L225 Difference]: With dead ends: 3021 [2021-10-13 21:45:11,889 INFO L226 Difference]: Without dead ends: 3002 [2021-10-13 21:45:11,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1182.2ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-10-13 21:45:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1634. [2021-10-13 21:45:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.4188609920391917) internal successors, (5583), 1633 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5583 transitions. [2021-10-13 21:45:11,932 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5583 transitions. Word has length 35 [2021-10-13 21:45:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:11,932 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5583 transitions. [2021-10-13 21:45:11,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5583 transitions. [2021-10-13 21:45:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:11,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:11,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:11,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:12,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:12,137 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:12,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1779903548, now seen corresponding path program 71 times [2021-10-13 21:45:12,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:12,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461899993] [2021-10-13 21:45:12,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:45:12,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:12,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:12,143 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:12,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-13 21:45:14,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:45:14,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:14,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:14,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:15,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:16,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:16,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461899993] [2021-10-13 21:45:16,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461899993] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:16,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:16,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:16,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078086489] [2021-10-13 21:45:16,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:16,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:16,414 INFO L87 Difference]: Start difference. First operand 1634 states and 5583 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:17,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:17,807 INFO L93 Difference]: Finished difference Result 3029 states and 9572 transitions. [2021-10-13 21:45:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:17,807 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:17,814 INFO L225 Difference]: With dead ends: 3029 [2021-10-13 21:45:17,814 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:45:17,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1106.8ms TimeCoverageRelationStatistics Valid=335, Invalid=925, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:45:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1626. [2021-10-13 21:45:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4196923076923076) internal successors, (5557), 1625 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5557 transitions. [2021-10-13 21:45:17,852 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5557 transitions. Word has length 35 [2021-10-13 21:45:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:17,852 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5557 transitions. [2021-10-13 21:45:17,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5557 transitions. [2021-10-13 21:45:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:17,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:17,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:17,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:18,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:18,057 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:18,058 INFO L82 PathProgramCache]: Analyzing trace with hash 521882964, now seen corresponding path program 72 times [2021-10-13 21:45:18,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:18,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248166848] [2021-10-13 21:45:18,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:45:18,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:18,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:18,060 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:18,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-13 21:45:20,461 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:45:20,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:20,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:20,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:21,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:22,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:22,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248166848] [2021-10-13 21:45:22,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248166848] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:22,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:22,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:22,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715767445] [2021-10-13 21:45:22,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:22,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:22,134 INFO L87 Difference]: Start difference. First operand 1626 states and 5557 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:23,376 INFO L93 Difference]: Finished difference Result 3087 states and 9673 transitions. [2021-10-13 21:45:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:23,384 INFO L225 Difference]: With dead ends: 3087 [2021-10-13 21:45:23,384 INFO L226 Difference]: Without dead ends: 3072 [2021-10-13 21:45:23,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1093.8ms TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:23,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-10-13 21:45:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1644. [2021-10-13 21:45:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1643 states have (on average 3.4096165550821667) internal successors, (5602), 1643 states have internal predecessors, (5602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 5602 transitions. [2021-10-13 21:45:23,422 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 5602 transitions. Word has length 35 [2021-10-13 21:45:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:23,422 INFO L470 AbstractCegarLoop]: Abstraction has 1644 states and 5602 transitions. [2021-10-13 21:45:23,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 5602 transitions. [2021-10-13 21:45:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:23,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:23,425 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:23,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:23,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:23,626 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:23,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:23,627 INFO L82 PathProgramCache]: Analyzing trace with hash 458428134, now seen corresponding path program 73 times [2021-10-13 21:45:23,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:23,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856537100] [2021-10-13 21:45:23,628 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:45:23,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:23,630 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:23,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-13 21:45:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:45:26,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:26,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:26,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:27,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:27,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856537100] [2021-10-13 21:45:27,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856537100] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:27,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:27,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:27,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214200233] [2021-10-13 21:45:27,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:27,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:27,764 INFO L87 Difference]: Start difference. First operand 1644 states and 5602 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:28,992 INFO L93 Difference]: Finished difference Result 3071 states and 9647 transitions. [2021-10-13 21:45:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:28,993 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:29,001 INFO L225 Difference]: With dead ends: 3071 [2021-10-13 21:45:29,001 INFO L226 Difference]: Without dead ends: 3048 [2021-10-13 21:45:29,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1126.0ms TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:29,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2021-10-13 21:45:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1638. [2021-10-13 21:45:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1637 states have (on average 3.411728772144166) internal successors, (5585), 1637 states have internal predecessors, (5585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 5585 transitions. [2021-10-13 21:45:29,042 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 5585 transitions. Word has length 35 [2021-10-13 21:45:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:29,043 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 5585 transitions. [2021-10-13 21:45:29,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 5585 transitions. [2021-10-13 21:45:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:29,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:29,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:29,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:29,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:29,247 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:29,247 INFO L82 PathProgramCache]: Analyzing trace with hash 515936504, now seen corresponding path program 74 times [2021-10-13 21:45:29,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:29,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668988998] [2021-10-13 21:45:29,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:45:29,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:29,250 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:29,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-13 21:45:31,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:45:31,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:31,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:31,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:32,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:33,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:33,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668988998] [2021-10-13 21:45:33,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668988998] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:33,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:33,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:33,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147987010] [2021-10-13 21:45:33,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:33,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:33,584 INFO L87 Difference]: Start difference. First operand 1638 states and 5585 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:34,757 INFO L93 Difference]: Finished difference Result 3063 states and 9626 transitions. [2021-10-13 21:45:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:34,757 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:34,764 INFO L225 Difference]: With dead ends: 3063 [2021-10-13 21:45:34,764 INFO L226 Difference]: Without dead ends: 3016 [2021-10-13 21:45:34,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1094.6ms TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-10-13 21:45:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1618. [2021-10-13 21:45:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.4205318491032775) internal successors, (5531), 1617 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5531 transitions. [2021-10-13 21:45:34,800 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5531 transitions. Word has length 35 [2021-10-13 21:45:34,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:34,800 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5531 transitions. [2021-10-13 21:45:34,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5531 transitions. [2021-10-13 21:45:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:34,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:34,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:34,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:35,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:35,004 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:35,005 INFO L82 PathProgramCache]: Analyzing trace with hash 155418534, now seen corresponding path program 75 times [2021-10-13 21:45:35,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:35,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159535694] [2021-10-13 21:45:35,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:45:35,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:35,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:35,008 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:35,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-13 21:45:37,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:45:37,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:37,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:37,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:38,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:39,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:39,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159535694] [2021-10-13 21:45:39,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159535694] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:39,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:39,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:39,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174249336] [2021-10-13 21:45:39,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:39,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:39,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:39,122 INFO L87 Difference]: Start difference. First operand 1618 states and 5531 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:40,395 INFO L93 Difference]: Finished difference Result 3035 states and 9561 transitions. [2021-10-13 21:45:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:40,398 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:40,406 INFO L225 Difference]: With dead ends: 3035 [2021-10-13 21:45:40,406 INFO L226 Difference]: Without dead ends: 3022 [2021-10-13 21:45:40,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1036.8ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-10-13 21:45:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1630. [2021-10-13 21:45:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.41804788213628) internal successors, (5568), 1629 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5568 transitions. [2021-10-13 21:45:40,442 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5568 transitions. Word has length 35 [2021-10-13 21:45:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:40,443 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5568 transitions. [2021-10-13 21:45:40,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5568 transitions. [2021-10-13 21:45:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:40,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:40,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:40,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2021-10-13 21:45:40,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:40,647 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash 535482142, now seen corresponding path program 76 times [2021-10-13 21:45:40,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:40,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134157761] [2021-10-13 21:45:40,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:45:40,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:40,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:40,652 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:40,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-13 21:45:43,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:45:43,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:43,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:43,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:43,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:44,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:44,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134157761] [2021-10-13 21:45:44,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134157761] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:44,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:44,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:44,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852303917] [2021-10-13 21:45:44,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:44,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:44,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:44,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:44,677 INFO L87 Difference]: Start difference. First operand 1630 states and 5568 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:45,954 INFO L93 Difference]: Finished difference Result 3037 states and 9561 transitions. [2021-10-13 21:45:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:45,961 INFO L225 Difference]: With dead ends: 3037 [2021-10-13 21:45:45,961 INFO L226 Difference]: Without dead ends: 3018 [2021-10-13 21:45:45,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1042.6ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:45:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-10-13 21:45:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1626. [2021-10-13 21:45:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4196923076923076) internal successors, (5557), 1625 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5557 transitions. [2021-10-13 21:45:45,995 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5557 transitions. Word has length 35 [2021-10-13 21:45:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:45,995 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5557 transitions. [2021-10-13 21:45:45,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5557 transitions. [2021-10-13 21:45:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:45,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:45,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:46,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2021-10-13 21:45:46,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:46,200 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:46,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1644823530, now seen corresponding path program 77 times [2021-10-13 21:45:46,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:46,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838301658] [2021-10-13 21:45:46,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:45:46,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:46,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:46,203 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:46,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-13 21:45:48,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:45:48,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:48,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:48,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:49,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:50,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:50,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838301658] [2021-10-13 21:45:50,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838301658] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:50,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:50,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:50,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97562815] [2021-10-13 21:45:50,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:50,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:50,460 INFO L87 Difference]: Start difference. First operand 1626 states and 5557 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:52,183 INFO L93 Difference]: Finished difference Result 3053 states and 9581 transitions. [2021-10-13 21:45:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:45:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:52,194 INFO L225 Difference]: With dead ends: 3053 [2021-10-13 21:45:52,194 INFO L226 Difference]: Without dead ends: 3040 [2021-10-13 21:45:52,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1254.2ms TimeCoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:45:52,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-10-13 21:45:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1630. [2021-10-13 21:45:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.4155923879680787) internal successors, (5564), 1629 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5564 transitions. [2021-10-13 21:45:52,248 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5564 transitions. Word has length 35 [2021-10-13 21:45:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:52,249 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5564 transitions. [2021-10-13 21:45:52,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5564 transitions. [2021-10-13 21:45:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:52,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:52,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:52,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:52,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:52,467 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1094827380, now seen corresponding path program 78 times [2021-10-13 21:45:52,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:52,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297346365] [2021-10-13 21:45:52,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:45:52,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:52,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:52,471 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:52,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-13 21:45:55,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:45:55,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:55,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:55,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:56,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:45:57,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:57,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297346365] [2021-10-13 21:45:57,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297346365] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:45:57,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:45:57,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:45:57,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436567659] [2021-10-13 21:45:57,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:45:57,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:45:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:45:57,273 INFO L87 Difference]: Start difference. First operand 1630 states and 5564 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:58,688 INFO L93 Difference]: Finished difference Result 3047 states and 9576 transitions. [2021-10-13 21:45:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:45:58,689 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:45:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:58,696 INFO L225 Difference]: With dead ends: 3047 [2021-10-13 21:45:58,696 INFO L226 Difference]: Without dead ends: 3026 [2021-10-13 21:45:58,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1195.9ms TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:45:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-10-13 21:45:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1626. [2021-10-13 21:45:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4172307692307693) internal successors, (5553), 1625 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5553 transitions. [2021-10-13 21:45:58,730 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5553 transitions. Word has length 35 [2021-10-13 21:45:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:58,730 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5553 transitions. [2021-10-13 21:45:58,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:45:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5553 transitions. [2021-10-13 21:45:58,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:45:58,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:58,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:58,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-13 21:45:58,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:45:58,934 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:45:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash 55352170, now seen corresponding path program 79 times [2021-10-13 21:45:58,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:58,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277311108] [2021-10-13 21:45:58,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:45:58,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:58,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:58,937 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:45:58,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-13 21:46:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:46:01,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:01,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:02,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:03,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:03,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277311108] [2021-10-13 21:46:03,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277311108] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:03,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:03,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:03,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848438233] [2021-10-13 21:46:03,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:03,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:03,332 INFO L87 Difference]: Start difference. First operand 1626 states and 5553 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:04,678 INFO L93 Difference]: Finished difference Result 3057 states and 9587 transitions. [2021-10-13 21:46:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:46:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:04,690 INFO L225 Difference]: With dead ends: 3057 [2021-10-13 21:46:04,691 INFO L226 Difference]: Without dead ends: 3042 [2021-10-13 21:46:04,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1158.2ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:46:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-10-13 21:46:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1632. [2021-10-13 21:46:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.4114040465971796) internal successors, (5564), 1631 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5564 transitions. [2021-10-13 21:46:04,755 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5564 transitions. Word has length 35 [2021-10-13 21:46:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:04,755 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5564 transitions. [2021-10-13 21:46:04,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:04,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5564 transitions. [2021-10-13 21:46:04,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:04,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:04,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:04,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Ended with exit code 0 [2021-10-13 21:46:04,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:04,974 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:04,975 INFO L82 PathProgramCache]: Analyzing trace with hash -8102660, now seen corresponding path program 80 times [2021-10-13 21:46:04,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:04,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454106073] [2021-10-13 21:46:04,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:46:04,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:04,977 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:04,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-13 21:46:07,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:46:07,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:07,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:07,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:08,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:09,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:09,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454106073] [2021-10-13 21:46:09,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454106073] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:09,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:09,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:09,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527081724] [2021-10-13 21:46:09,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:09,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:09,264 INFO L87 Difference]: Start difference. First operand 1632 states and 5564 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:11,344 INFO L93 Difference]: Finished difference Result 3049 states and 9576 transitions. [2021-10-13 21:46:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:46:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:11,351 INFO L225 Difference]: With dead ends: 3049 [2021-10-13 21:46:11,352 INFO L226 Difference]: Without dead ends: 3022 [2021-10-13 21:46:11,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1296.1ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:46:11,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-10-13 21:46:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1622. [2021-10-13 21:46:11,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.418877236273905) internal successors, (5542), 1621 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5542 transitions. [2021-10-13 21:46:11,391 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5542 transitions. Word has length 35 [2021-10-13 21:46:11,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:11,391 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5542 transitions. [2021-10-13 21:46:11,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5542 transitions. [2021-10-13 21:46:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:11,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:11,394 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:11,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-13 21:46:11,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:11,595 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:11,596 INFO L82 PathProgramCache]: Analyzing trace with hash 41759900, now seen corresponding path program 81 times [2021-10-13 21:46:11,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:11,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783111945] [2021-10-13 21:46:11,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:46:11,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:11,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:11,598 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:11,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-13 21:46:14,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:46:14,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:14,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:14,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:14,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:16,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:16,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783111945] [2021-10-13 21:46:16,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783111945] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:16,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:16,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:16,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280428582] [2021-10-13 21:46:16,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:16,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:16,091 INFO L87 Difference]: Start difference. First operand 1622 states and 5542 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:17,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:17,581 INFO L93 Difference]: Finished difference Result 3001 states and 9487 transitions. [2021-10-13 21:46:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:46:17,582 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:17,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:17,589 INFO L225 Difference]: With dead ends: 3001 [2021-10-13 21:46:17,590 INFO L226 Difference]: Without dead ends: 2988 [2021-10-13 21:46:17,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1154.5ms TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:46:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2021-10-13 21:46:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1630. [2021-10-13 21:46:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.4131368937998774) internal successors, (5560), 1629 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5560 transitions. [2021-10-13 21:46:17,624 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5560 transitions. Word has length 35 [2021-10-13 21:46:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5560 transitions. [2021-10-13 21:46:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5560 transitions. [2021-10-13 21:46:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:17,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:17,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:17,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-13 21:46:17,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:17,830 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:17,830 INFO L82 PathProgramCache]: Analyzing trace with hash -508236250, now seen corresponding path program 82 times [2021-10-13 21:46:17,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:17,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700257350] [2021-10-13 21:46:17,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:46:17,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:17,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:17,832 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:17,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-13 21:46:20,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:46:20,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:20,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:20,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:21,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:22,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:22,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700257350] [2021-10-13 21:46:22,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700257350] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:22,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:22,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:22,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700295735] [2021-10-13 21:46:22,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:22,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:22,341 INFO L87 Difference]: Start difference. First operand 1630 states and 5560 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:23,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:23,734 INFO L93 Difference]: Finished difference Result 3005 states and 9491 transitions. [2021-10-13 21:46:23,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:46:23,735 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:23,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:23,742 INFO L225 Difference]: With dead ends: 3005 [2021-10-13 21:46:23,743 INFO L226 Difference]: Without dead ends: 2984 [2021-10-13 21:46:23,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1176.3ms TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:46:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-10-13 21:46:23,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1626. [2021-10-13 21:46:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.4147692307692306) internal successors, (5549), 1625 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5549 transitions. [2021-10-13 21:46:23,782 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5549 transitions. Word has length 35 [2021-10-13 21:46:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:23,783 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5549 transitions. [2021-10-13 21:46:23,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5549 transitions. [2021-10-13 21:46:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:23,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:23,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:23,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-13 21:46:23,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:23,987 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:23,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1678071386, now seen corresponding path program 83 times [2021-10-13 21:46:23,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:23,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110817] [2021-10-13 21:46:23,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:46:23,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:23,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:23,990 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:23,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-13 21:46:26,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:46:26,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:26,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:26,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:27,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:28,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:28,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110817] [2021-10-13 21:46:28,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110817] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:28,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:28,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:28,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057209580] [2021-10-13 21:46:28,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:28,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:28,304 INFO L87 Difference]: Start difference. First operand 1626 states and 5549 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:29,695 INFO L93 Difference]: Finished difference Result 2991 states and 9471 transitions. [2021-10-13 21:46:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:46:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:29,702 INFO L225 Difference]: With dead ends: 2991 [2021-10-13 21:46:29,702 INFO L226 Difference]: Without dead ends: 2962 [2021-10-13 21:46:29,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1056.8ms TimeCoverageRelationStatistics Valid=336, Invalid=924, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:46:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2021-10-13 21:46:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1622. [2021-10-13 21:46:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 3.4164096236890806) internal successors, (5538), 1621 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5538 transitions. [2021-10-13 21:46:29,738 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5538 transitions. Word has length 35 [2021-10-13 21:46:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:29,738 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 5538 transitions. [2021-10-13 21:46:29,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5538 transitions. [2021-10-13 21:46:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:29,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:29,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:29,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-13 21:46:29,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:29,942 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:29,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:29,943 INFO L82 PathProgramCache]: Analyzing trace with hash -888587850, now seen corresponding path program 84 times [2021-10-13 21:46:29,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:29,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957386886] [2021-10-13 21:46:29,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:46:29,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:29,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:29,945 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:29,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-13 21:46:32,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:46:32,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:32,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:32,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:33,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:34,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:34,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957386886] [2021-10-13 21:46:34,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957386886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:34,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:34,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:34,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801798481] [2021-10-13 21:46:34,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:34,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:34,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:34,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:34,315 INFO L87 Difference]: Start difference. First operand 1622 states and 5538 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:35,571 INFO L93 Difference]: Finished difference Result 3015 states and 9514 transitions. [2021-10-13 21:46:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:46:35,572 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:35,579 INFO L225 Difference]: With dead ends: 3015 [2021-10-13 21:46:35,579 INFO L226 Difference]: Without dead ends: 3000 [2021-10-13 21:46:35,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1077.8ms TimeCoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:46:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-10-13 21:46:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1634. [2021-10-13 21:46:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.408450704225352) internal successors, (5566), 1633 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5566 transitions. [2021-10-13 21:46:35,614 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5566 transitions. Word has length 35 [2021-10-13 21:46:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:35,614 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5566 transitions. [2021-10-13 21:46:35,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5566 transitions. [2021-10-13 21:46:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:35,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:35,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:35,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-13 21:46:35,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:35,818 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:35,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:35,819 INFO L82 PathProgramCache]: Analyzing trace with hash -952042680, now seen corresponding path program 85 times [2021-10-13 21:46:35,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:35,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807547135] [2021-10-13 21:46:35,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:46:35,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:35,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:35,822 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:35,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-13 21:46:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:46:38,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:38,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:39,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:40,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:40,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807547135] [2021-10-13 21:46:40,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807547135] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:40,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:40,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:40,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341870354] [2021-10-13 21:46:40,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:40,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:40,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:40,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:40,329 INFO L87 Difference]: Start difference. First operand 1634 states and 5566 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:41,740 INFO L93 Difference]: Finished difference Result 3017 states and 9512 transitions. [2021-10-13 21:46:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:46:41,741 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:41,747 INFO L225 Difference]: With dead ends: 3017 [2021-10-13 21:46:41,747 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:46:41,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1061.3ms TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:46:41,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:46:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1628. [2021-10-13 21:46:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 3.4105716041794714) internal successors, (5549), 1627 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5549 transitions. [2021-10-13 21:46:41,782 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5549 transitions. Word has length 35 [2021-10-13 21:46:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:41,782 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 5549 transitions. [2021-10-13 21:46:41,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5549 transitions. [2021-10-13 21:46:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:41,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:41,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:41,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-13 21:46:41,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:41,986 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:41,986 INFO L82 PathProgramCache]: Analyzing trace with hash -722509324, now seen corresponding path program 86 times [2021-10-13 21:46:41,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:41,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522397268] [2021-10-13 21:46:41,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:46:41,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:41,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:41,990 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:41,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-13 21:46:44,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:46:44,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:44,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:44,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:45,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:46,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:46,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522397268] [2021-10-13 21:46:46,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522397268] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:46,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:46,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:46,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214890977] [2021-10-13 21:46:46,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:46,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:46,701 INFO L87 Difference]: Start difference. First operand 1628 states and 5549 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:47,939 INFO L93 Difference]: Finished difference Result 2993 states and 9471 transitions. [2021-10-13 21:46:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:46:47,939 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:47,947 INFO L225 Difference]: With dead ends: 2993 [2021-10-13 21:46:47,947 INFO L226 Difference]: Without dead ends: 2958 [2021-10-13 21:46:47,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1191.0ms TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:46:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2021-10-13 21:46:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1618. [2021-10-13 21:46:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.418058132343847) internal successors, (5527), 1617 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 5527 transitions. [2021-10-13 21:46:47,988 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 5527 transitions. Word has length 35 [2021-10-13 21:46:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:47,988 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 5527 transitions. [2021-10-13 21:46:47,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 5527 transitions. [2021-10-13 21:46:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:47,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:47,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:48,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-13 21:46:48,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:48,192 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:48,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:48,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1324513416, now seen corresponding path program 87 times [2021-10-13 21:46:48,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:48,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91064061] [2021-10-13 21:46:48,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:46:48,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:48,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:48,196 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:48,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-13 21:46:50,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:46:50,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:50,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:50,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:51,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:52,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:52,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91064061] [2021-10-13 21:46:52,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91064061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:52,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:52,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:52,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224921910] [2021-10-13 21:46:52,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:52,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:52,824 INFO L87 Difference]: Start difference. First operand 1618 states and 5527 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:46:54,276 INFO L93 Difference]: Finished difference Result 3005 states and 9476 transitions. [2021-10-13 21:46:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:46:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:46:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:46:54,284 INFO L225 Difference]: With dead ends: 3005 [2021-10-13 21:46:54,284 INFO L226 Difference]: Without dead ends: 2990 [2021-10-13 21:46:54,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1130.3ms TimeCoverageRelationStatistics Valid=356, Invalid=904, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:46:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-10-13 21:46:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1654. [2021-10-13 21:46:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 3.3980641258318207) internal successors, (5617), 1653 states have internal predecessors, (5617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 5617 transitions. [2021-10-13 21:46:54,323 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 5617 transitions. Word has length 35 [2021-10-13 21:46:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:46:54,323 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 5617 transitions. [2021-10-13 21:46:54,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:46:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 5617 transitions. [2021-10-13 21:46:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:46:54,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:46:54,327 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:46:54,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-13 21:46:54,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:46:54,528 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:46:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:46:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1261058586, now seen corresponding path program 88 times [2021-10-13 21:46:54,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:46:54,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033571830] [2021-10-13 21:46:54,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:46:54,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:46:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:46:54,531 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:46:54,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-13 21:46:57,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:46:57,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:46:57,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:46:57,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:46:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:57,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:46:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:46:59,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:46:59,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033571830] [2021-10-13 21:46:59,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033571830] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:46:59,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:46:59,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:46:59,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901993125] [2021-10-13 21:46:59,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:46:59,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:46:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:46:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:46:59,140 INFO L87 Difference]: Start difference. First operand 1654 states and 5617 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:00,531 INFO L93 Difference]: Finished difference Result 2989 states and 9450 transitions. [2021-10-13 21:47:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:00,532 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:00,538 INFO L225 Difference]: With dead ends: 2989 [2021-10-13 21:47:00,538 INFO L226 Difference]: Without dead ends: 2966 [2021-10-13 21:47:00,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1049.1ms TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-10-13 21:47:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1648. [2021-10-13 21:47:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1647 states have (on average 3.400121432908318) internal successors, (5600), 1647 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 5600 transitions. [2021-10-13 21:47:00,582 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 5600 transitions. Word has length 35 [2021-10-13 21:47:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:00,582 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 5600 transitions. [2021-10-13 21:47:00,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 5600 transitions. [2021-10-13 21:47:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:00,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:00,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:00,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:00,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:00,799 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:00,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:00,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1318566956, now seen corresponding path program 89 times [2021-10-13 21:47:00,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:00,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562074659] [2021-10-13 21:47:00,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:47:00,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:00,802 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:00,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-13 21:47:03,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:47:03,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:03,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:03,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:04,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:05,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:05,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562074659] [2021-10-13 21:47:05,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562074659] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:05,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:05,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:05,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641471917] [2021-10-13 21:47:05,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:05,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:05,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:05,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:05,645 INFO L87 Difference]: Start difference. First operand 1648 states and 5600 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:06,900 INFO L93 Difference]: Finished difference Result 2965 states and 9409 transitions. [2021-10-13 21:47:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:06,901 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:06,909 INFO L225 Difference]: With dead ends: 2965 [2021-10-13 21:47:06,909 INFO L226 Difference]: Without dead ends: 2926 [2021-10-13 21:47:06,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1146.4ms TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-10-13 21:47:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1636. [2021-10-13 21:47:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 3.400611620795107) internal successors, (5560), 1635 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 5560 transitions. [2021-10-13 21:47:06,948 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 5560 transitions. Word has length 35 [2021-10-13 21:47:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:06,949 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 5560 transitions. [2021-10-13 21:47:06,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 5560 transitions. [2021-10-13 21:47:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:06,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:06,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:06,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:07,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:07,154 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1676160188, now seen corresponding path program 90 times [2021-10-13 21:47:07,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:07,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180765232] [2021-10-13 21:47:07,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:47:07,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:07,158 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:07,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-13 21:47:10,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:47:10,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:10,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:10,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:10,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:12,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:12,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180765232] [2021-10-13 21:47:12,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180765232] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:12,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:12,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:12,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214968479] [2021-10-13 21:47:12,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:12,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:12,136 INFO L87 Difference]: Start difference. First operand 1636 states and 5560 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:13,320 INFO L93 Difference]: Finished difference Result 2943 states and 9351 transitions. [2021-10-13 21:47:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:13,327 INFO L225 Difference]: With dead ends: 2943 [2021-10-13 21:47:13,327 INFO L226 Difference]: Without dead ends: 2928 [2021-10-13 21:47:13,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1067.6ms TimeCoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-10-13 21:47:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1648. [2021-10-13 21:47:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1647 states have (on average 3.392835458409229) internal successors, (5588), 1647 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 5588 transitions. [2021-10-13 21:47:13,361 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 5588 transitions. Word has length 35 [2021-10-13 21:47:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:13,362 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 5588 transitions. [2021-10-13 21:47:13,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 5588 transitions. [2021-10-13 21:47:13,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:13,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:13,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:13,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:13,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:13,582 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:13,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1739615018, now seen corresponding path program 91 times [2021-10-13 21:47:13,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:13,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803096540] [2021-10-13 21:47:13,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:47:13,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:13,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:13,588 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:13,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-13 21:47:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:47:16,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:16,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:17,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:18,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:18,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803096540] [2021-10-13 21:47:18,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803096540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:18,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:18,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:18,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356577408] [2021-10-13 21:47:18,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:18,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:18,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:18,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:18,738 INFO L87 Difference]: Start difference. First operand 1648 states and 5588 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:20,040 INFO L93 Difference]: Finished difference Result 2945 states and 9349 transitions. [2021-10-13 21:47:20,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:20,041 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:20,047 INFO L225 Difference]: With dead ends: 2945 [2021-10-13 21:47:20,047 INFO L226 Difference]: Without dead ends: 2922 [2021-10-13 21:47:20,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1073.8ms TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-10-13 21:47:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1642. [2021-10-13 21:47:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 3.3948811700182815) internal successors, (5571), 1641 states have internal predecessors, (5571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 5571 transitions. [2021-10-13 21:47:20,080 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 5571 transitions. Word has length 35 [2021-10-13 21:47:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:20,080 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 5571 transitions. [2021-10-13 21:47:20,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 5571 transitions. [2021-10-13 21:47:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:20,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:20,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:20,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:20,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:20,283 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:20,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash 834629988, now seen corresponding path program 92 times [2021-10-13 21:47:20,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:20,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812678318] [2021-10-13 21:47:20,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:47:20,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:20,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:20,287 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:20,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-13 21:47:23,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:47:23,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:23,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:23,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:24,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:25,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:25,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812678318] [2021-10-13 21:47:25,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812678318] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:25,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:25,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:25,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518702446] [2021-10-13 21:47:25,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:25,238 INFO L87 Difference]: Start difference. First operand 1642 states and 5571 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:26,372 INFO L93 Difference]: Finished difference Result 2921 states and 9308 transitions. [2021-10-13 21:47:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:26,380 INFO L225 Difference]: With dead ends: 2921 [2021-10-13 21:47:26,380 INFO L226 Difference]: Without dead ends: 2848 [2021-10-13 21:47:26,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1087.5ms TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-10-13 21:47:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1594. [2021-10-13 21:47:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 3.430634023854363) internal successors, (5465), 1593 states have internal predecessors, (5465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 5465 transitions. [2021-10-13 21:47:26,413 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 5465 transitions. Word has length 35 [2021-10-13 21:47:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:26,413 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 5465 transitions. [2021-10-13 21:47:26,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 5465 transitions. [2021-10-13 21:47:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:26,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:26,416 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:26,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2021-10-13 21:47:26,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:26,617 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash -917626998, now seen corresponding path program 93 times [2021-10-13 21:47:26,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:26,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443850441] [2021-10-13 21:47:26,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:47:26,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:26,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:26,621 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:26,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-13 21:47:29,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:47:29,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:29,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:29,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:30,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:31,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:31,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443850441] [2021-10-13 21:47:31,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443850441] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:31,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:31,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:31,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318606279] [2021-10-13 21:47:31,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:31,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:31,189 INFO L87 Difference]: Start difference. First operand 1594 states and 5465 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:32,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:32,187 INFO L93 Difference]: Finished difference Result 3033 states and 9524 transitions. [2021-10-13 21:47:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:32,187 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:32,195 INFO L225 Difference]: With dead ends: 3033 [2021-10-13 21:47:32,195 INFO L226 Difference]: Without dead ends: 3018 [2021-10-13 21:47:32,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 981.5ms TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-10-13 21:47:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1654. [2021-10-13 21:47:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 3.3908045977011496) internal successors, (5605), 1653 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 5605 transitions. [2021-10-13 21:47:32,230 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 5605 transitions. Word has length 35 [2021-10-13 21:47:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:32,230 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 5605 transitions. [2021-10-13 21:47:32,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 5605 transitions. [2021-10-13 21:47:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:32,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:32,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:32,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:32,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:32,434 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:32,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:32,435 INFO L82 PathProgramCache]: Analyzing trace with hash -981081828, now seen corresponding path program 94 times [2021-10-13 21:47:32,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:32,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883547624] [2021-10-13 21:47:32,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:47:32,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:32,437 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:32,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-13 21:47:35,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:47:35,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:35,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:35,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:36,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:37,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:37,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883547624] [2021-10-13 21:47:37,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883547624] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:37,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:37,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:37,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245606277] [2021-10-13 21:47:37,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:37,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:37,126 INFO L87 Difference]: Start difference. First operand 1654 states and 5605 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:38,195 INFO L93 Difference]: Finished difference Result 3017 states and 9498 transitions. [2021-10-13 21:47:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:38,196 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:38,203 INFO L225 Difference]: With dead ends: 3017 [2021-10-13 21:47:38,204 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:47:38,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 991.2ms TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:47:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1648. [2021-10-13 21:47:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1647 states have (on average 3.392835458409229) internal successors, (5588), 1647 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 5588 transitions. [2021-10-13 21:47:38,238 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 5588 transitions. Word has length 35 [2021-10-13 21:47:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:38,238 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 5588 transitions. [2021-10-13 21:47:38,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 5588 transitions. [2021-10-13 21:47:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:38,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:38,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:38,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:38,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:38,444 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:38,445 INFO L82 PathProgramCache]: Analyzing trace with hash -923573458, now seen corresponding path program 95 times [2021-10-13 21:47:38,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:38,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887338853] [2021-10-13 21:47:38,446 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:47:38,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:38,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:38,447 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:38,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-13 21:47:41,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:47:41,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:41,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:41,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:42,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:43,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:43,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887338853] [2021-10-13 21:47:43,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887338853] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:43,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:43,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:43,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354597492] [2021-10-13 21:47:43,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:43,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:43,111 INFO L87 Difference]: Start difference. First operand 1648 states and 5588 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:44,199 INFO L93 Difference]: Finished difference Result 2993 states and 9457 transitions. [2021-10-13 21:47:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:47:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:44,206 INFO L225 Difference]: With dead ends: 2993 [2021-10-13 21:47:44,206 INFO L226 Difference]: Without dead ends: 2954 [2021-10-13 21:47:44,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1029.8ms TimeCoverageRelationStatistics Valid=368, Invalid=892, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:47:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-10-13 21:47:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1636. [2021-10-13 21:47:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 3.3932721712538227) internal successors, (5548), 1635 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 5548 transitions. [2021-10-13 21:47:44,321 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 5548 transitions. Word has length 35 [2021-10-13 21:47:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:44,321 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 5548 transitions. [2021-10-13 21:47:44,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 5548 transitions. [2021-10-13 21:47:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:44,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:44,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:44,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:44,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:44,525 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:44,527 INFO L82 PathProgramCache]: Analyzing trace with hash 48283812, now seen corresponding path program 96 times [2021-10-13 21:47:44,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:44,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610684824] [2021-10-13 21:47:44,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:47:44,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:44,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:44,529 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:44,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-13 21:47:47,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:47:47,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:47,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:47,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:48,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:49,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:49,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610684824] [2021-10-13 21:47:49,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610684824] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:49,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:49,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:49,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950043462] [2021-10-13 21:47:49,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:49,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:49,214 INFO L87 Difference]: Start difference. First operand 1636 states and 5548 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:50,296 INFO L93 Difference]: Finished difference Result 2989 states and 9432 transitions. [2021-10-13 21:47:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:47:50,297 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:50,304 INFO L225 Difference]: With dead ends: 2989 [2021-10-13 21:47:50,304 INFO L226 Difference]: Without dead ends: 2974 [2021-10-13 21:47:50,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1137.1ms TimeCoverageRelationStatistics Valid=425, Invalid=981, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:47:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-10-13 21:47:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1648. [2021-10-13 21:47:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1647 states have (on average 3.3855494839101397) internal successors, (5576), 1647 states have internal predecessors, (5576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 5576 transitions. [2021-10-13 21:47:50,338 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 5576 transitions. Word has length 35 [2021-10-13 21:47:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:50,338 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 5576 transitions. [2021-10-13 21:47:50,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 5576 transitions. [2021-10-13 21:47:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:50,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:50,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:50,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:50,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:50,542 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash -15171018, now seen corresponding path program 97 times [2021-10-13 21:47:50,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:50,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187133612] [2021-10-13 21:47:50,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:47:50,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:50,545 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:50,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-13 21:47:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:47:53,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:47:53,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:54,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:47:55,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:55,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187133612] [2021-10-13 21:47:55,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187133612] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:55,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:55,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:47:55,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961029792] [2021-10-13 21:47:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:47:55,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:47:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:47:55,620 INFO L87 Difference]: Start difference. First operand 1648 states and 5576 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:56,723 INFO L93 Difference]: Finished difference Result 2991 states and 9430 transitions. [2021-10-13 21:47:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:47:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:47:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:56,730 INFO L225 Difference]: With dead ends: 2991 [2021-10-13 21:47:56,731 INFO L226 Difference]: Without dead ends: 2968 [2021-10-13 21:47:56,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1075.3ms TimeCoverageRelationStatistics Valid=393, Invalid=939, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:47:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-10-13 21:47:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1642. [2021-10-13 21:47:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 3.387568555758684) internal successors, (5559), 1641 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 5559 transitions. [2021-10-13 21:47:56,765 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 5559 transitions. Word has length 35 [2021-10-13 21:47:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:56,765 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 5559 transitions. [2021-10-13 21:47:56,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:47:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 5559 transitions. [2021-10-13 21:47:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:47:56,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:56,768 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:56,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-13 21:47:56,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:56,969 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:47:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:56,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1735893308, now seen corresponding path program 98 times [2021-10-13 21:47:56,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:56,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415277012] [2021-10-13 21:47:56,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:47:56,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:56,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:56,972 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:56,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-13 21:48:00,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:48:00,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:00,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:00,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:00,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:01,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:01,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415277012] [2021-10-13 21:48:01,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415277012] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:01,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:01,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:01,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290757337] [2021-10-13 21:48:01,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:01,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:01,722 INFO L87 Difference]: Start difference. First operand 1642 states and 5559 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:02,727 INFO L93 Difference]: Finished difference Result 2967 states and 9389 transitions. [2021-10-13 21:48:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:48:02,728 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:02,735 INFO L225 Difference]: With dead ends: 2967 [2021-10-13 21:48:02,735 INFO L226 Difference]: Without dead ends: 2904 [2021-10-13 21:48:02,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1046.0ms TimeCoverageRelationStatistics Valid=399, Invalid=933, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:48:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2021-10-13 21:48:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1604. [2021-10-13 21:48:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 3.4192139737991267) internal successors, (5481), 1603 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 5481 transitions. [2021-10-13 21:48:02,769 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 5481 transitions. Word has length 35 [2021-10-13 21:48:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:02,769 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 5481 transitions. [2021-10-13 21:48:02,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 5481 transitions. [2021-10-13 21:48:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:02,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:02,772 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:02,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:02,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:02,973 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:02,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:02,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2129609708, now seen corresponding path program 99 times [2021-10-13 21:48:02,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:02,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727640911] [2021-10-13 21:48:02,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:48:02,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:02,977 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:02,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-13 21:48:06,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:48:06,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:06,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:06,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:06,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:07,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:07,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727640911] [2021-10-13 21:48:07,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727640911] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:07,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:07,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:07,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128454990] [2021-10-13 21:48:07,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:07,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:07,915 INFO L87 Difference]: Start difference. First operand 1604 states and 5481 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:09,093 INFO L93 Difference]: Finished difference Result 3133 states and 9776 transitions. [2021-10-13 21:48:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:09,094 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:09,104 INFO L225 Difference]: With dead ends: 3133 [2021-10-13 21:48:09,104 INFO L226 Difference]: Without dead ends: 3118 [2021-10-13 21:48:09,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1032.7ms TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2021-10-13 21:48:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 1652. [2021-10-13 21:48:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1651 states have (on average 3.399152029073289) internal successors, (5612), 1651 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 5612 transitions. [2021-10-13 21:48:09,233 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 5612 transitions. Word has length 35 [2021-10-13 21:48:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:09,233 INFO L470 AbstractCegarLoop]: Abstraction has 1652 states and 5612 transitions. [2021-10-13 21:48:09,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 5612 transitions. [2021-10-13 21:48:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:09,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:09,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:09,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:09,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:09,453 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:09,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2066154878, now seen corresponding path program 100 times [2021-10-13 21:48:09,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:09,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124983517] [2021-10-13 21:48:09,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:48:09,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:09,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:09,457 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:09,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-13 21:48:12,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:48:12,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:12,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:12,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:13,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:14,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:14,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124983517] [2021-10-13 21:48:14,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124983517] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:14,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:14,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:14,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59407357] [2021-10-13 21:48:14,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:14,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:14,561 INFO L87 Difference]: Start difference. First operand 1652 states and 5612 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:15,674 INFO L93 Difference]: Finished difference Result 3117 states and 9750 transitions. [2021-10-13 21:48:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:15,675 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:15,681 INFO L225 Difference]: With dead ends: 3117 [2021-10-13 21:48:15,681 INFO L226 Difference]: Without dead ends: 3094 [2021-10-13 21:48:15,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1008.2ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-10-13 21:48:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 1646. [2021-10-13 21:48:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1645 states have (on average 3.4012158054711246) internal successors, (5595), 1645 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 5595 transitions. [2021-10-13 21:48:15,716 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 5595 transitions. Word has length 35 [2021-10-13 21:48:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:15,716 INFO L470 AbstractCegarLoop]: Abstraction has 1646 states and 5595 transitions. [2021-10-13 21:48:15,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 5595 transitions. [2021-10-13 21:48:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:15,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:15,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:15,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:15,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:15,920 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:15,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:15,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2123663248, now seen corresponding path program 101 times [2021-10-13 21:48:15,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:15,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395335458] [2021-10-13 21:48:15,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:48:15,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:15,924 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:15,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-13 21:48:19,237 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:48:19,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:19,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:19,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:19,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:21,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:21,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395335458] [2021-10-13 21:48:21,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395335458] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:21,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:21,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:21,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032253920] [2021-10-13 21:48:21,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:21,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:21,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:21,286 INFO L87 Difference]: Start difference. First operand 1646 states and 5595 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:22,938 INFO L93 Difference]: Finished difference Result 3093 states and 9709 transitions. [2021-10-13 21:48:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:22,938 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:22,945 INFO L225 Difference]: With dead ends: 3093 [2021-10-13 21:48:22,946 INFO L226 Difference]: Without dead ends: 3054 [2021-10-13 21:48:22,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1146.5ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-10-13 21:48:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 1634. [2021-10-13 21:48:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.4017146356399266) internal successors, (5555), 1633 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5555 transitions. [2021-10-13 21:48:22,985 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5555 transitions. Word has length 35 [2021-10-13 21:48:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:22,985 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5555 transitions. [2021-10-13 21:48:22,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5555 transitions. [2021-10-13 21:48:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:22,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:22,988 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:23,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:23,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:23,190 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:23,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:23,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1199446778, now seen corresponding path program 102 times [2021-10-13 21:48:23,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:23,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983166999] [2021-10-13 21:48:23,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:48:23,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:23,196 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:23,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-13 21:48:26,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:48:26,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:26,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:26,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:27,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:28,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:28,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983166999] [2021-10-13 21:48:28,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983166999] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:28,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:28,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:28,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602038126] [2021-10-13 21:48:28,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:28,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:28,334 INFO L87 Difference]: Start difference. First operand 1634 states and 5555 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:29,618 INFO L93 Difference]: Finished difference Result 3107 states and 9720 transitions. [2021-10-13 21:48:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:29,626 INFO L225 Difference]: With dead ends: 3107 [2021-10-13 21:48:29,626 INFO L226 Difference]: Without dead ends: 3092 [2021-10-13 21:48:29,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1067.5ms TimeCoverageRelationStatistics Valid=350, Invalid=910, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-10-13 21:48:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 1646. [2021-10-13 21:48:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1645 states have (on average 3.393920972644377) internal successors, (5583), 1645 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 5583 transitions. [2021-10-13 21:48:29,660 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 5583 transitions. Word has length 35 [2021-10-13 21:48:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:29,660 INFO L470 AbstractCegarLoop]: Abstraction has 1646 states and 5583 transitions. [2021-10-13 21:48:29,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 5583 transitions. [2021-10-13 21:48:29,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:29,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:29,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:29,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Ended with exit code 0 [2021-10-13 21:48:29,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:29,864 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:29,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:29,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1262901608, now seen corresponding path program 103 times [2021-10-13 21:48:29,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:29,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701313017] [2021-10-13 21:48:29,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:48:29,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:29,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:29,867 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:29,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-10-13 21:48:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:48:33,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:33,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:34,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:35,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:35,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701313017] [2021-10-13 21:48:35,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701313017] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:35,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:35,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:35,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13171180] [2021-10-13 21:48:35,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:35,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:35,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:35,661 INFO L87 Difference]: Start difference. First operand 1646 states and 5583 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:37,125 INFO L93 Difference]: Finished difference Result 3109 states and 9718 transitions. [2021-10-13 21:48:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:37,125 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:37,134 INFO L225 Difference]: With dead ends: 3109 [2021-10-13 21:48:37,135 INFO L226 Difference]: Without dead ends: 3086 [2021-10-13 21:48:37,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1192.9ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2021-10-13 21:48:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1640. [2021-10-13 21:48:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 3.3959731543624163) internal successors, (5566), 1639 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 5566 transitions. [2021-10-13 21:48:37,175 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 5566 transitions. Word has length 35 [2021-10-13 21:48:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:37,176 INFO L470 AbstractCegarLoop]: Abstraction has 1640 states and 5566 transitions. [2021-10-13 21:48:37,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 5566 transitions. [2021-10-13 21:48:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:37,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:37,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:37,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Ended with exit code 0 [2021-10-13 21:48:37,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:37,380 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1311343398, now seen corresponding path program 104 times [2021-10-13 21:48:37,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:37,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181458358] [2021-10-13 21:48:37,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:48:37,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:37,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:37,382 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:37,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-10-13 21:48:41,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:48:41,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:41,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:41,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:41,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:42,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:42,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181458358] [2021-10-13 21:48:42,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181458358] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:42,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:42,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:42,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554495644] [2021-10-13 21:48:42,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:42,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:42,999 INFO L87 Difference]: Start difference. First operand 1640 states and 5566 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:44,872 INFO L93 Difference]: Finished difference Result 3085 states and 9677 transitions. [2021-10-13 21:48:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:44,873 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:44,880 INFO L225 Difference]: With dead ends: 3085 [2021-10-13 21:48:44,880 INFO L226 Difference]: Without dead ends: 3036 [2021-10-13 21:48:44,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1201.5ms TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2021-10-13 21:48:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 1616. [2021-10-13 21:48:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 3.411764705882353) internal successors, (5510), 1615 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 5510 transitions. [2021-10-13 21:48:44,916 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 5510 transitions. Word has length 35 [2021-10-13 21:48:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:44,916 INFO L470 AbstractCegarLoop]: Abstraction has 1616 states and 5510 transitions. [2021-10-13 21:48:44,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 5510 transitions. [2021-10-13 21:48:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:44,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:44,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:44,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Ended with exit code 0 [2021-10-13 21:48:45,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:45,121 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:45,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1138303910, now seen corresponding path program 105 times [2021-10-13 21:48:45,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:45,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347019393] [2021-10-13 21:48:45,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:48:45,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:45,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:45,124 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:45,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-10-13 21:48:48,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:48:48,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:48,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:48,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:49,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:50,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:50,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347019393] [2021-10-13 21:48:50,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347019393] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:50,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:50,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:50,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421609013] [2021-10-13 21:48:50,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:50,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:50,264 INFO L87 Difference]: Start difference. First operand 1616 states and 5510 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:51,504 INFO L93 Difference]: Finished difference Result 3099 states and 9692 transitions. [2021-10-13 21:48:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:51,505 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:51,512 INFO L225 Difference]: With dead ends: 3099 [2021-10-13 21:48:51,512 INFO L226 Difference]: Without dead ends: 3086 [2021-10-13 21:48:51,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1047.6ms TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2021-10-13 21:48:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1632. [2021-10-13 21:48:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.4101778050275904) internal successors, (5562), 1631 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5562 transitions. [2021-10-13 21:48:51,548 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5562 transitions. Word has length 35 [2021-10-13 21:48:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:51,548 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5562 transitions. [2021-10-13 21:48:51,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5562 transitions. [2021-10-13 21:48:51,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:51,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:51,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:51,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:51,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:51,752 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:51,753 INFO L82 PathProgramCache]: Analyzing trace with hash -758240302, now seen corresponding path program 106 times [2021-10-13 21:48:51,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:51,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101634664] [2021-10-13 21:48:51,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:48:51,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:51,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:51,756 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:51,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-10-13 21:48:55,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:48:55,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:55,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:48:55,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:55,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:48:56,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:56,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101634664] [2021-10-13 21:48:56,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101634664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:56,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:56,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:48:56,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359459438] [2021-10-13 21:48:56,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:48:56,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:48:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:48:56,820 INFO L87 Difference]: Start difference. First operand 1632 states and 5562 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:58,310 INFO L93 Difference]: Finished difference Result 3101 states and 9692 transitions. [2021-10-13 21:48:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:48:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:48:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:58,317 INFO L225 Difference]: With dead ends: 3101 [2021-10-13 21:48:58,318 INFO L226 Difference]: Without dead ends: 3082 [2021-10-13 21:48:58,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1067.8ms TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:48:58,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-10-13 21:48:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 1628. [2021-10-13 21:48:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 3.41180086047941) internal successors, (5551), 1627 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5551 transitions. [2021-10-13 21:48:58,360 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5551 transitions. Word has length 35 [2021-10-13 21:48:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:58,360 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 5551 transitions. [2021-10-13 21:48:58,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:48:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5551 transitions. [2021-10-13 21:48:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:48:58,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:58,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:58,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:58,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:58,570 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:48:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash 351101086, now seen corresponding path program 107 times [2021-10-13 21:48:58,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:58,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784638300] [2021-10-13 21:48:58,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:48:58,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:58,574 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:58,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-10-13 21:49:02,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:49:02,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:02,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:02,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:02,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:03,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:03,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784638300] [2021-10-13 21:49:03,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784638300] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:03,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:03,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:03,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107882983] [2021-10-13 21:49:03,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:03,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:03,886 INFO L87 Difference]: Start difference. First operand 1628 states and 5551 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:05,634 INFO L93 Difference]: Finished difference Result 3075 states and 9650 transitions. [2021-10-13 21:49:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:49:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:05,643 INFO L225 Difference]: With dead ends: 3075 [2021-10-13 21:49:05,643 INFO L226 Difference]: Without dead ends: 3062 [2021-10-13 21:49:05,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1236.4ms TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:49:05,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-10-13 21:49:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 1632. [2021-10-13 21:49:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.407725321888412) internal successors, (5558), 1631 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5558 transitions. [2021-10-13 21:49:05,688 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5558 transitions. Word has length 35 [2021-10-13 21:49:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:05,689 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5558 transitions. [2021-10-13 21:49:05,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5558 transitions. [2021-10-13 21:49:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:05,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:05,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:05,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:05,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:05,893 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:05,893 INFO L82 PathProgramCache]: Analyzing trace with hash -198895064, now seen corresponding path program 108 times [2021-10-13 21:49:05,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:05,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673344918] [2021-10-13 21:49:05,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:49:05,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:05,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:05,896 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:05,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-10-13 21:49:09,727 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:49:09,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:09,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:09,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:10,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:11,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:11,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673344918] [2021-10-13 21:49:11,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673344918] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:11,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:11,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:11,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836981739] [2021-10-13 21:49:11,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:11,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:11,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:11,266 INFO L87 Difference]: Start difference. First operand 1632 states and 5558 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:12,455 INFO L93 Difference]: Finished difference Result 3079 states and 9654 transitions. [2021-10-13 21:49:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:49:12,456 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:12,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:12,463 INFO L225 Difference]: With dead ends: 3079 [2021-10-13 21:49:12,464 INFO L226 Difference]: Without dead ends: 3058 [2021-10-13 21:49:12,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1047.1ms TimeCoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:49:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-10-13 21:49:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 1628. [2021-10-13 21:49:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 3.409342347879533) internal successors, (5547), 1627 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5547 transitions. [2021-10-13 21:49:12,497 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5547 transitions. Word has length 35 [2021-10-13 21:49:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:12,498 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 5547 transitions. [2021-10-13 21:49:12,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5547 transitions. [2021-10-13 21:49:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:12,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:12,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:12,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:12,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:12,701 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1238370274, now seen corresponding path program 109 times [2021-10-13 21:49:12,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:12,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901937468] [2021-10-13 21:49:12,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:49:12,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:12,705 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:12,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-10-13 21:49:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:49:16,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:16,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:16,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:18,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:18,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901937468] [2021-10-13 21:49:18,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901937468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:18,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:18,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:18,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185306538] [2021-10-13 21:49:18,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:18,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:18,043 INFO L87 Difference]: Start difference. First operand 1628 states and 5547 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:19,367 INFO L93 Difference]: Finished difference Result 3103 states and 9691 transitions. [2021-10-13 21:49:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:49:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:19,373 INFO L225 Difference]: With dead ends: 3103 [2021-10-13 21:49:19,374 INFO L226 Difference]: Without dead ends: 3088 [2021-10-13 21:49:19,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1074.8ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:49:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2021-10-13 21:49:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 1634. [2021-10-13 21:49:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.4035517452541333) internal successors, (5558), 1633 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5558 transitions. [2021-10-13 21:49:19,407 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5558 transitions. Word has length 35 [2021-10-13 21:49:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:19,407 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5558 transitions. [2021-10-13 21:49:19,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5558 transitions. [2021-10-13 21:49:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:19,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:19,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:19,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:19,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:19,611 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:19,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1301825104, now seen corresponding path program 110 times [2021-10-13 21:49:19,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:19,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833004036] [2021-10-13 21:49:19,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:49:19,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:19,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:19,615 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:19,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-10-13 21:49:23,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:49:23,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:23,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:23,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:24,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:25,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:25,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833004036] [2021-10-13 21:49:25,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833004036] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:25,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:25,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:25,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947209956] [2021-10-13 21:49:25,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:25,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:25,243 INFO L87 Difference]: Start difference. First operand 1634 states and 5558 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:26,741 INFO L93 Difference]: Finished difference Result 3097 states and 9674 transitions. [2021-10-13 21:49:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:49:26,742 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:26,748 INFO L225 Difference]: With dead ends: 3097 [2021-10-13 21:49:26,748 INFO L226 Difference]: Without dead ends: 3070 [2021-10-13 21:49:26,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1044.8ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:49:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2021-10-13 21:49:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 1624. [2021-10-13 21:49:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 3.410967344423906) internal successors, (5536), 1623 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5536 transitions. [2021-10-13 21:49:26,803 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5536 transitions. Word has length 35 [2021-10-13 21:49:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:26,803 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 5536 transitions. [2021-10-13 21:49:26,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5536 transitions. [2021-10-13 21:49:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:26,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:26,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:26,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Ended with exit code 0 [2021-10-13 21:49:27,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:27,007 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:27,007 INFO L82 PathProgramCache]: Analyzing trace with hash 2099332662, now seen corresponding path program 111 times [2021-10-13 21:49:27,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:27,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136853409] [2021-10-13 21:49:27,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:49:27,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:27,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:27,009 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:27,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-10-13 21:49:31,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:49:31,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:31,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:31,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:31,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:32,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:32,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136853409] [2021-10-13 21:49:32,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136853409] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:32,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:32,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:32,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645563737] [2021-10-13 21:49:32,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:32,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:32,973 INFO L87 Difference]: Start difference. First operand 1624 states and 5536 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:34,310 INFO L93 Difference]: Finished difference Result 3039 states and 9576 transitions. [2021-10-13 21:49:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:49:34,310 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:34,319 INFO L225 Difference]: With dead ends: 3039 [2021-10-13 21:49:34,319 INFO L226 Difference]: Without dead ends: 3026 [2021-10-13 21:49:34,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1033.3ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:49:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-10-13 21:49:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1636. [2021-10-13 21:49:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 3.403669724770642) internal successors, (5565), 1635 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 5565 transitions. [2021-10-13 21:49:34,355 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 5565 transitions. Word has length 35 [2021-10-13 21:49:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:34,355 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 5565 transitions. [2021-10-13 21:49:34,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 5565 transitions. [2021-10-13 21:49:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:34,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:34,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:34,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:34,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:34,559 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:34,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:34,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1815571026, now seen corresponding path program 112 times [2021-10-13 21:49:34,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:34,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123952553] [2021-10-13 21:49:34,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:49:34,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:34,562 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:34,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-10-13 21:49:38,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:49:38,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:38,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:38,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:38,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:39,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:39,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123952553] [2021-10-13 21:49:39,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123952553] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:39,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:39,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:39,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980682016] [2021-10-13 21:49:39,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:39,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:39,901 INFO L87 Difference]: Start difference. First operand 1636 states and 5565 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:41,094 INFO L93 Difference]: Finished difference Result 3041 states and 9576 transitions. [2021-10-13 21:49:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:49:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:41,103 INFO L225 Difference]: With dead ends: 3041 [2021-10-13 21:49:41,103 INFO L226 Difference]: Without dead ends: 3022 [2021-10-13 21:49:41,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1010.5ms TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:49:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-10-13 21:49:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1632. [2021-10-13 21:49:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.4052728387492337) internal successors, (5554), 1631 states have internal predecessors, (5554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5554 transitions. [2021-10-13 21:49:41,147 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5554 transitions. Word has length 35 [2021-10-13 21:49:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:41,147 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5554 transitions. [2021-10-13 21:49:41,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5554 transitions. [2021-10-13 21:49:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:41,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:41,150 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:41,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:41,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:41,351 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash 389398814, now seen corresponding path program 113 times [2021-10-13 21:49:41,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:41,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463067255] [2021-10-13 21:49:41,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:49:41,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:41,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:41,354 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:41,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-10-13 21:49:45,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:49:45,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:45,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:45,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:45,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:46,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:46,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463067255] [2021-10-13 21:49:46,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463067255] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:46,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:46,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:46,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678129888] [2021-10-13 21:49:46,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:46,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:46,902 INFO L87 Difference]: Start difference. First operand 1632 states and 5554 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:48,249 INFO L93 Difference]: Finished difference Result 3049 states and 9587 transitions. [2021-10-13 21:49:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:49:48,249 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:48,256 INFO L225 Difference]: With dead ends: 3049 [2021-10-13 21:49:48,256 INFO L226 Difference]: Without dead ends: 3014 [2021-10-13 21:49:48,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1030.3ms TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:49:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2021-10-13 21:49:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1624. [2021-10-13 21:49:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 3.4060382008626) internal successors, (5528), 1623 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5528 transitions. [2021-10-13 21:49:48,291 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5528 transitions. Word has length 35 [2021-10-13 21:49:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:48,291 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 5528 transitions. [2021-10-13 21:49:48,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5528 transitions. [2021-10-13 21:49:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:48,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:48,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:48,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Ended with exit code 0 [2021-10-13 21:49:48,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:48,495 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:48,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:48,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1603781970, now seen corresponding path program 114 times [2021-10-13 21:49:48,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:48,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682520587] [2021-10-13 21:49:48,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:49:48,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:48,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:48,498 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:48,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-10-13 21:49:52,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:49:52,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:52,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:52,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:52,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:53,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:53,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682520587] [2021-10-13 21:49:53,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682520587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:53,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:53,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:49:53,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286384945] [2021-10-13 21:49:53,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:49:53,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:49:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:49:53,819 INFO L87 Difference]: Start difference. First operand 1624 states and 5528 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:55,011 INFO L93 Difference]: Finished difference Result 3083 states and 9632 transitions. [2021-10-13 21:49:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:49:55,011 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:49:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:55,018 INFO L225 Difference]: With dead ends: 3083 [2021-10-13 21:49:55,018 INFO L226 Difference]: Without dead ends: 3068 [2021-10-13 21:49:55,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1002.5ms TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:49:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-10-13 21:49:55,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 1642. [2021-10-13 21:49:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 3.396099939061548) internal successors, (5573), 1641 states have internal predecessors, (5573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 5573 transitions. [2021-10-13 21:49:55,053 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 5573 transitions. Word has length 35 [2021-10-13 21:49:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:55,053 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 5573 transitions. [2021-10-13 21:49:55,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:49:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 5573 transitions. [2021-10-13 21:49:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:49:55,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:55,056 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:55,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Ended with exit code 0 [2021-10-13 21:49:55,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:55,257 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:49:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:55,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1667236800, now seen corresponding path program 115 times [2021-10-13 21:49:55,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:55,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937022374] [2021-10-13 21:49:55,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:49:55,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:55,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:55,260 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:55,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-10-13 21:49:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:49:59,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:49:59,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:49:59,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:00,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:00,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937022374] [2021-10-13 21:50:00,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937022374] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:00,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:00,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:00,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789994205] [2021-10-13 21:50:00,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:00,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:00,672 INFO L87 Difference]: Start difference. First operand 1642 states and 5573 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:01,863 INFO L93 Difference]: Finished difference Result 3067 states and 9606 transitions. [2021-10-13 21:50:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:50:01,863 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:01,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:01,871 INFO L225 Difference]: With dead ends: 3067 [2021-10-13 21:50:01,871 INFO L226 Difference]: Without dead ends: 3044 [2021-10-13 21:50:01,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1018.3ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:50:01,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2021-10-13 21:50:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 1636. [2021-10-13 21:50:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 3.398165137614679) internal successors, (5556), 1635 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 5556 transitions. [2021-10-13 21:50:01,904 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 5556 transitions. Word has length 35 [2021-10-13 21:50:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:01,904 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 5556 transitions. [2021-10-13 21:50:01,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 5556 transitions. [2021-10-13 21:50:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:01,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:01,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:01,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:02,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:02,115 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:02,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1609728430, now seen corresponding path program 116 times [2021-10-13 21:50:02,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:02,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915112749] [2021-10-13 21:50:02,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:50:02,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:02,119 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:02,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-10-13 21:50:06,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:50:06,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:06,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:06,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:06,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:07,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:07,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915112749] [2021-10-13 21:50:07,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915112749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:07,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:07,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:07,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238841210] [2021-10-13 21:50:07,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:07,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:07,733 INFO L87 Difference]: Start difference. First operand 1636 states and 5556 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:08,847 INFO L93 Difference]: Finished difference Result 3059 states and 9585 transitions. [2021-10-13 21:50:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:50:08,847 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:08,855 INFO L225 Difference]: With dead ends: 3059 [2021-10-13 21:50:08,855 INFO L226 Difference]: Without dead ends: 3012 [2021-10-13 21:50:08,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1048.4ms TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 21:50:08,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-10-13 21:50:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1616. [2021-10-13 21:50:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 3.406811145510836) internal successors, (5502), 1615 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 5502 transitions. [2021-10-13 21:50:08,889 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 5502 transitions. Word has length 35 [2021-10-13 21:50:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:08,889 INFO L470 AbstractCegarLoop]: Abstraction has 1616 states and 5502 transitions. [2021-10-13 21:50:08,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:08,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 5502 transitions. [2021-10-13 21:50:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:08,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:08,892 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:08,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:09,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:09,093 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:09,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1970246400, now seen corresponding path program 117 times [2021-10-13 21:50:09,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:09,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416815837] [2021-10-13 21:50:09,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:50:09,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:09,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:09,097 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:09,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-10-13 21:50:12,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:50:12,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:12,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:12,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:13,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:14,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:14,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416815837] [2021-10-13 21:50:14,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416815837] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:14,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:14,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:14,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863638466] [2021-10-13 21:50:14,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:14,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:14,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:14,404 INFO L87 Difference]: Start difference. First operand 1616 states and 5502 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:15,792 INFO L93 Difference]: Finished difference Result 3031 states and 9534 transitions. [2021-10-13 21:50:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:50:15,792 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:15,799 INFO L225 Difference]: With dead ends: 3031 [2021-10-13 21:50:15,799 INFO L226 Difference]: Without dead ends: 3018 [2021-10-13 21:50:15,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1042.9ms TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:50:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-10-13 21:50:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1628. [2021-10-13 21:50:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 3.4044253226797787) internal successors, (5539), 1627 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5539 transitions. [2021-10-13 21:50:15,833 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5539 transitions. Word has length 35 [2021-10-13 21:50:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:15,833 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 5539 transitions. [2021-10-13 21:50:15,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5539 transitions. [2021-10-13 21:50:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:15,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:15,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:15,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Ended with exit code 0 [2021-10-13 21:50:16,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:16,037 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:16,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1590182792, now seen corresponding path program 118 times [2021-10-13 21:50:16,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:16,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243852936] [2021-10-13 21:50:16,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:50:16,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:16,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:16,040 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:16,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2021-10-13 21:50:20,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:50:20,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:20,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:20,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:20,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:21,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:21,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243852936] [2021-10-13 21:50:21,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243852936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:21,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:21,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:21,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939215653] [2021-10-13 21:50:21,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:21,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:21,899 INFO L87 Difference]: Start difference. First operand 1628 states and 5539 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:23,295 INFO L93 Difference]: Finished difference Result 3045 states and 9556 transitions. [2021-10-13 21:50:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:50:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:23,302 INFO L225 Difference]: With dead ends: 3045 [2021-10-13 21:50:23,302 INFO L226 Difference]: Without dead ends: 3026 [2021-10-13 21:50:23,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1079.6ms TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:50:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-10-13 21:50:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1624. [2021-10-13 21:50:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 3.4060382008626) internal successors, (5528), 1623 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5528 transitions. [2021-10-13 21:50:23,336 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5528 transitions. Word has length 35 [2021-10-13 21:50:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:23,337 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 5528 transitions. [2021-10-13 21:50:23,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5528 transitions. [2021-10-13 21:50:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:23,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:23,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:23,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:23,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:23,542 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash -480841404, now seen corresponding path program 119 times [2021-10-13 21:50:23,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:23,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261903897] [2021-10-13 21:50:23,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:50:23,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:23,546 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:23,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2021-10-13 21:50:27,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:50:27,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:27,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:27,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:27,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:28,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:28,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261903897] [2021-10-13 21:50:28,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261903897] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:28,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:28,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:28,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988220098] [2021-10-13 21:50:28,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:28,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:28,869 INFO L87 Difference]: Start difference. First operand 1624 states and 5528 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:30,418 INFO L93 Difference]: Finished difference Result 3049 states and 9554 transitions. [2021-10-13 21:50:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:50:30,418 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:30,426 INFO L225 Difference]: With dead ends: 3049 [2021-10-13 21:50:30,426 INFO L226 Difference]: Without dead ends: 3036 [2021-10-13 21:50:30,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1093.6ms TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:50:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2021-10-13 21:50:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 1628. [2021-10-13 21:50:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 3.4019668100799016) internal successors, (5535), 1627 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5535 transitions. [2021-10-13 21:50:30,466 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5535 transitions. Word has length 35 [2021-10-13 21:50:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:30,466 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 5535 transitions. [2021-10-13 21:50:30,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5535 transitions. [2021-10-13 21:50:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:30,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:30,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:30,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:30,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:30,672 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:30,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1030837554, now seen corresponding path program 120 times [2021-10-13 21:50:30,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:30,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025846308] [2021-10-13 21:50:30,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:50:30,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:30,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:30,676 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:30,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2021-10-13 21:50:34,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:50:34,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:34,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:34,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:35,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:36,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:36,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025846308] [2021-10-13 21:50:36,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025846308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:36,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:36,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:36,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320221088] [2021-10-13 21:50:36,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:36,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:36,332 INFO L87 Difference]: Start difference. First operand 1628 states and 5535 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:37,893 INFO L93 Difference]: Finished difference Result 3043 states and 9549 transitions. [2021-10-13 21:50:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:50:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:37,900 INFO L225 Difference]: With dead ends: 3043 [2021-10-13 21:50:37,900 INFO L226 Difference]: Without dead ends: 3022 [2021-10-13 21:50:37,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1141.3ms TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:50:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-10-13 21:50:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1624. [2021-10-13 21:50:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 3.403573629081947) internal successors, (5524), 1623 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5524 transitions. [2021-10-13 21:50:37,936 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5524 transitions. Word has length 35 [2021-10-13 21:50:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:37,937 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 5524 transitions. [2021-10-13 21:50:37,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5524 transitions. [2021-10-13 21:50:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:37,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:37,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:37,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:38,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:38,141 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:38,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2070312764, now seen corresponding path program 121 times [2021-10-13 21:50:38,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:38,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516463437] [2021-10-13 21:50:38,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:50:38,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:38,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:38,144 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:38,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2021-10-13 21:50:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:50:42,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:42,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:42,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:43,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:43,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516463437] [2021-10-13 21:50:43,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516463437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:43,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:43,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:43,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746279441] [2021-10-13 21:50:43,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:43,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:43,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:43,609 INFO L87 Difference]: Start difference. First operand 1624 states and 5524 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:44,842 INFO L93 Difference]: Finished difference Result 3053 states and 9560 transitions. [2021-10-13 21:50:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:50:44,843 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:44,849 INFO L225 Difference]: With dead ends: 3053 [2021-10-13 21:50:44,850 INFO L226 Difference]: Without dead ends: 3038 [2021-10-13 21:50:44,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1021.8ms TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:50:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-10-13 21:50:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1630. [2021-10-13 21:50:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.3977900552486187) internal successors, (5535), 1629 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5535 transitions. [2021-10-13 21:50:44,884 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5535 transitions. Word has length 35 [2021-10-13 21:50:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:44,884 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5535 transitions. [2021-10-13 21:50:44,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5535 transitions. [2021-10-13 21:50:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:44,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:44,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:44,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:45,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:45,088 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2133767594, now seen corresponding path program 122 times [2021-10-13 21:50:45,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:45,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578013902] [2021-10-13 21:50:45,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:50:45,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:45,091 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:45,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2021-10-13 21:50:49,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:50:49,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:49,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:49,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:49,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:50,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:50,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578013902] [2021-10-13 21:50:50,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578013902] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:50,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:50,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:50,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478249783] [2021-10-13 21:50:50,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:50,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:50,746 INFO L87 Difference]: Start difference. First operand 1630 states and 5535 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:52,153 INFO L93 Difference]: Finished difference Result 3045 states and 9549 transitions. [2021-10-13 21:50:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:50:52,154 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:52,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:52,161 INFO L225 Difference]: With dead ends: 3045 [2021-10-13 21:50:52,161 INFO L226 Difference]: Without dead ends: 3018 [2021-10-13 21:50:52,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1014.2ms TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:50:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-10-13 21:50:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1620. [2021-10-13 21:50:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 3.4051883878937614) internal successors, (5513), 1619 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 5513 transitions. [2021-10-13 21:50:52,198 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 5513 transitions. Word has length 35 [2021-10-13 21:50:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:52,198 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 5513 transitions. [2021-10-13 21:50:52,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 5513 transitions. [2021-10-13 21:50:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:52,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:52,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:52,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:52,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:52,402 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:52,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2083905034, now seen corresponding path program 123 times [2021-10-13 21:50:52,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:52,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49659791] [2021-10-13 21:50:52,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:50:52,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:52,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:52,405 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:52,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2021-10-13 21:50:56,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:50:56,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:56,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:50:56,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:56,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:50:57,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:57,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49659791] [2021-10-13 21:50:57,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49659791] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:50:57,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:50:57,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:50:57,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131223186] [2021-10-13 21:50:57,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:50:57,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:50:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:50:57,986 INFO L87 Difference]: Start difference. First operand 1620 states and 5513 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:59,310 INFO L93 Difference]: Finished difference Result 3027 states and 9512 transitions. [2021-10-13 21:50:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:50:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:50:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:59,317 INFO L225 Difference]: With dead ends: 3027 [2021-10-13 21:50:59,317 INFO L226 Difference]: Without dead ends: 3014 [2021-10-13 21:50:59,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1077.3ms TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:50:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2021-10-13 21:50:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1628. [2021-10-13 21:50:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1627 states have (on average 3.3995082974800246) internal successors, (5531), 1627 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5531 transitions. [2021-10-13 21:50:59,352 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5531 transitions. Word has length 35 [2021-10-13 21:50:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:59,353 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 5531 transitions. [2021-10-13 21:50:59,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:50:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5531 transitions. [2021-10-13 21:50:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:50:59,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:59,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:59,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Ended with exit code 0 [2021-10-13 21:50:59,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:59,556 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:50:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1661066112, now seen corresponding path program 124 times [2021-10-13 21:50:59,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:59,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619978476] [2021-10-13 21:50:59,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:50:59,558 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:59,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:59,559 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:59,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2021-10-13 21:51:03,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:51:03,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:51:03,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:51:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:51:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:04,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:51:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:05,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:51:05,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619978476] [2021-10-13 21:51:05,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619978476] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:51:05,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:51:05,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:51:05,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142144218] [2021-10-13 21:51:05,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:51:05,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:51:05,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:51:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:51:05,346 INFO L87 Difference]: Start difference. First operand 1628 states and 5531 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:51:06,534 INFO L93 Difference]: Finished difference Result 3031 states and 9516 transitions. [2021-10-13 21:51:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 21:51:06,534 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:51:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:51:06,541 INFO L225 Difference]: With dead ends: 3031 [2021-10-13 21:51:06,541 INFO L226 Difference]: Without dead ends: 3010 [2021-10-13 21:51:06,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1098.5ms TimeCoverageRelationStatistics Valid=356, Invalid=1126, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:51:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-10-13 21:51:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1624. [2021-10-13 21:51:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 3.401109057301294) internal successors, (5520), 1623 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5520 transitions. [2021-10-13 21:51:06,574 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5520 transitions. Word has length 35 [2021-10-13 21:51:06,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:51:06,574 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 5520 transitions. [2021-10-13 21:51:06,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5520 transitions. [2021-10-13 21:51:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:51:06,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:51:06,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:51:06,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Forceful destruction successful, exit code 0 [2021-10-13 21:51:06,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:51:06,777 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:51:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:51:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash -447593548, now seen corresponding path program 125 times [2021-10-13 21:51:06,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:51:06,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866292789] [2021-10-13 21:51:06,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:51:06,779 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:51:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:51:06,780 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:51:06,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2021-10-13 21:51:10,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:51:10,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:51:10,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:51:10,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:51:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:11,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:51:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:12,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:51:12,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866292789] [2021-10-13 21:51:12,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866292789] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:51:12,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:51:12,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:51:12,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618626312] [2021-10-13 21:51:12,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:51:12,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:51:12,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:51:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:51:12,635 INFO L87 Difference]: Start difference. First operand 1624 states and 5520 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:51:14,108 INFO L93 Difference]: Finished difference Result 3017 states and 9496 transitions. [2021-10-13 21:51:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:51:14,108 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:51:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:51:14,115 INFO L225 Difference]: With dead ends: 3017 [2021-10-13 21:51:14,115 INFO L226 Difference]: Without dead ends: 2988 [2021-10-13 21:51:14,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1070.5ms TimeCoverageRelationStatistics Valid=355, Invalid=977, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:51:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2021-10-13 21:51:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1620. [2021-10-13 21:51:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 3.40271772699197) internal successors, (5509), 1619 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 5509 transitions. [2021-10-13 21:51:14,187 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 5509 transitions. Word has length 35 [2021-10-13 21:51:14,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:51:14,187 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 5509 transitions. [2021-10-13 21:51:14,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 5509 transitions. [2021-10-13 21:51:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:51:14,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:51:14,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:51:14,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Ended with exit code 0 [2021-10-13 21:51:14,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:51:14,391 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:51:14,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:51:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1280714512, now seen corresponding path program 126 times [2021-10-13 21:51:14,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:51:14,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739120749] [2021-10-13 21:51:14,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:51:14,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:51:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:51:14,394 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:51:14,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2021-10-13 21:51:18,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 21:51:18,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:51:18,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:51:18,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:51:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:19,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:51:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:20,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:51:20,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739120749] [2021-10-13 21:51:20,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739120749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:51:20,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:51:20,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:51:20,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818795742] [2021-10-13 21:51:20,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:51:20,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:51:20,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:51:20,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:51:20,367 INFO L87 Difference]: Start difference. First operand 1620 states and 5509 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:51:21,721 INFO L93 Difference]: Finished difference Result 3027 states and 9510 transitions. [2021-10-13 21:51:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:51:21,722 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:51:21,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:51:21,729 INFO L225 Difference]: With dead ends: 3027 [2021-10-13 21:51:21,729 INFO L226 Difference]: Without dead ends: 3012 [2021-10-13 21:51:21,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1220.0ms TimeCoverageRelationStatistics Valid=418, Invalid=1064, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:51:21,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-10-13 21:51:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1632. [2021-10-13 21:51:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.3948497854077253) internal successors, (5537), 1631 states have internal predecessors, (5537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5537 transitions. [2021-10-13 21:51:21,764 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5537 transitions. Word has length 35 [2021-10-13 21:51:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:51:21,764 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5537 transitions. [2021-10-13 21:51:21,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5537 transitions. [2021-10-13 21:51:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:51:21,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:51:21,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:51:21,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Forceful destruction successful, exit code 0 [2021-10-13 21:51:21,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:51:21,968 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:51:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:51:21,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1217259682, now seen corresponding path program 127 times [2021-10-13 21:51:21,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:51:21,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618029771] [2021-10-13 21:51:21,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:51:21,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:51:21,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:51:21,971 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:51:21,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2021-10-13 21:51:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:51:25,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:51:25,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:51:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:26,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:51:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:27,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:51:27,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618029771] [2021-10-13 21:51:27,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618029771] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:51:27,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:51:27,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:51:27,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672891218] [2021-10-13 21:51:27,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:51:27,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:51:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:51:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:51:27,528 INFO L87 Difference]: Start difference. First operand 1632 states and 5537 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:51:28,695 INFO L93 Difference]: Finished difference Result 3017 states and 9486 transitions. [2021-10-13 21:51:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:51:28,695 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:51:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:51:28,701 INFO L225 Difference]: With dead ends: 3017 [2021-10-13 21:51:28,701 INFO L226 Difference]: Without dead ends: 2994 [2021-10-13 21:51:28,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1061.4ms TimeCoverageRelationStatistics Valid=388, Invalid=1018, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:51:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-10-13 21:51:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1626. [2021-10-13 21:51:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.396923076923077) internal successors, (5520), 1625 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5520 transitions. [2021-10-13 21:51:28,753 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5520 transitions. Word has length 35 [2021-10-13 21:51:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:51:28,753 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5520 transitions. [2021-10-13 21:51:28,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5520 transitions. [2021-10-13 21:51:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:51:28,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:51:28,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:51:28,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Ended with exit code 0 [2021-10-13 21:51:28,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:51:28,957 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:51:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:51:28,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1446793038, now seen corresponding path program 128 times [2021-10-13 21:51:28,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:51:28,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339511763] [2021-10-13 21:51:28,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:51:28,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:51:28,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:51:28,960 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:51:28,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2021-10-13 21:51:33,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:51:33,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:51:33,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:51:33,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:51:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:33,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:51:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:51:34,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:51:34,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339511763] [2021-10-13 21:51:34,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339511763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:51:34,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:51:34,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-13 21:51:34,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258368630] [2021-10-13 21:51:34,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 21:51:34,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:51:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 21:51:34,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:51:34,933 INFO L87 Difference]: Start difference. First operand 1626 states and 5520 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:51:36,396 INFO L93 Difference]: Finished difference Result 2993 states and 9445 transitions. [2021-10-13 21:51:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 21:51:36,396 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 21:51:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:51:36,403 INFO L225 Difference]: With dead ends: 2993 [2021-10-13 21:51:36,403 INFO L226 Difference]: Without dead ends: 2926 [2021-10-13 21:51:36,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1101.7ms TimeCoverageRelationStatistics Valid=390, Invalid=1016, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 21:51:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-10-13 21:51:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1584. [2021-10-13 21:51:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 3.4320909665192674) internal successors, (5433), 1583 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 5433 transitions. [2021-10-13 21:51:36,436 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 5433 transitions. Word has length 35 [2021-10-13 21:51:36,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:51:36,436 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 5433 transitions. [2021-10-13 21:51:36,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:51:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 5433 transitions. [2021-10-13 21:51:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 21:51:36,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:51:36,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:51:36,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Ended with exit code 0 [2021-10-13 21:51:36,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:51:36,639 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 21:51:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:51:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1905410666, now seen corresponding path program 129 times [2021-10-13 21:51:36,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:51:36,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980566819] [2021-10-13 21:51:36,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:51:36,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:51:36,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:51:36,643 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:51:36,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process Received shutdown request... [2021-10-13 21:51:38,345 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 [2021-10-13 21:51:38,345 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:51:39,359 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:51:39,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Forceful destruction successful, exit code 0 [2021-10-13 21:51:39,435 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 [2021-10-13 21:51:39,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:51:39,560 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. [2021-10-13 21:51:39,563 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:51:39,563 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:51:39,563 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:51:39,563 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:51:39,563 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 21:51:39,564 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 21:51:39,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 21:51:39,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 21:51:39,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 21:51:39,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:51:39,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:51:39,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:51:39,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 21:51:39,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 21:51:39,571 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:51:39,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:51:39,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:51:39 BasicIcfg [2021-10-13 21:51:39,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:51:39,576 INFO L168 Benchmark]: Toolchain (without parser) took 728512.20 ms. Allocated memory was 158.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 132.9 MB in the beginning and 131.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-10-13 21:51:39,576 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:51:39,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.60 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 121.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 21:51:39,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.80 ms. Allocated memory is still 158.3 MB. Free memory was 121.3 MB in the beginning and 119.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:51:39,578 INFO L168 Benchmark]: Boogie Preprocessor took 77.88 ms. Allocated memory is still 158.3 MB. Free memory was 119.3 MB in the beginning and 117.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:51:39,578 INFO L168 Benchmark]: RCFGBuilder took 735.06 ms. Allocated memory is still 158.3 MB. Free memory was 117.8 MB in the beginning and 101.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-13 21:51:39,578 INFO L168 Benchmark]: TraceAbstraction took 727276.14 ms. Allocated memory was 158.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 101.3 MB in the beginning and 131.1 MB in the end (delta: -29.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-10-13 21:51:39,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.60 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 121.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.80 ms. Allocated memory is still 158.3 MB. Free memory was 121.3 MB in the beginning and 119.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.88 ms. Allocated memory is still 158.3 MB. Free memory was 119.3 MB in the beginning and 117.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 735.06 ms. Allocated memory is still 158.3 MB. Free memory was 117.8 MB in the beginning and 101.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 727276.14 ms. Allocated memory was 158.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 101.3 MB in the beginning and 131.1 MB in the end (delta: -29.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14608.4ms, 177 PlacesBefore, 70 PlacesAfterwards, 170 TransitionsBefore, 61 TransitionsAfterwards, 4576 CoEnabledTransitionPairs, 8 FixpointIterations, 78 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 176 TotalNumberOfCompositions, 15729 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10503, positive: 10234, positive conditional: 0, positive unconditional: 10234, negative: 269, negative conditional: 0, negative unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4047, positive: 3972, positive conditional: 0, positive unconditional: 3972, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4047, positive: 3937, positive conditional: 0, positive unconditional: 3937, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 110, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 185, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 153, negative conditional: 0, negative unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10503, positive: 6262, positive conditional: 0, positive unconditional: 6262, negative: 194, negative conditional: 0, negative unconditional: 194, unknown: 4047, unknown conditional: 0, unknown unconditional: 4047] , Statistics on independence cache: Total cache size (in pairs): 643, Positive cache size: 624, Positive conditional cache size: 0, Positive unconditional cache size: 624, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - 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: 105]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 1,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 221 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 727021.1ms, OverallIterations: 138, TraceHistogramMax: 1, EmptinessCheckTime: 538.3ms, AutomataDifference: 172864.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14949.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19846 SDtfs, 52627 SDslu, 134612 SDs, 0 SdLazy, 102193 SolverSat, 5966 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97265.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10251 GetRequests, 5800 SyntacticMatches, 0 SemanticMatches, 4451 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28638 ImplicationChecksByTransitivity, 140045.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5215occurred in iteration=0, InterpolantAutomatonStates: 2226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7813.1ms AutomataMinimizationTime, 137 MinimizatonAttempts, 173654 StatesRemovedByMinimization, 126 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1576.4ms SsaConstructionTime, 27259.8ms SatisfiabilityAnalysisTime, 220229.7ms InterpolantComputationTime, 4529 NumberOfCodeBlocks, 4529 NumberOfCodeBlocksAsserted, 137 NumberOfCheckSat, 8784 ConstructedInterpolants, 2840 QuantifiedInterpolants, 135101 SizeOfPredicates, 2064 NumberOfNonLiveVariables, 19307 ConjunctsInSsa, 1924 ConjunctsInUnsatCore, 274 InterpolantComputations, 274 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown