/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/clever.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:41:55,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:41:55,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:41:55,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:41:55,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:41:55,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:41:55,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:41:55,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:41:55,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:41:55,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:41:55,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:41:55,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:41:55,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:41:55,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:41:55,517 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:41:55,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:41:55,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:41:55,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:41:55,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:41:55,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:41:55,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:41:55,520 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:41:55,520 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:41:55,521 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:41:55,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:41:55,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:41:55,521 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:41:55,522 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:41:55,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:41:55,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:41:55,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:41:55,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:41:55,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:41:55,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:41:55,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:41:55,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:41:55,523 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:41:55,524 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:41:55,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:41:55,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:41:55,524 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:41:55,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:41:55,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:41:55,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:41:55,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:41:55,959 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:41:55,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/clever.wvr.c [2021-10-07 15:41:56,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4fe2f9ac/db3387bbfc0f4f6ea802f528c19fabf9/FLAGdbad2cd00 [2021-10-07 15:41:56,678 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:41:56,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2021-10-07 15:41:56,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4fe2f9ac/db3387bbfc0f4f6ea802f528c19fabf9/FLAGdbad2cd00 [2021-10-07 15:41:57,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4fe2f9ac/db3387bbfc0f4f6ea802f528c19fabf9 [2021-10-07 15:41:57,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:41:57,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:41:57,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:41:57,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:41:57,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:41:57,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4549c991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57, skipping insertion in model container [2021-10-07 15:41:57,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:41:57,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:41:57,225 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/clever.wvr.c[2133,2146] [2021-10-07 15:41:57,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:41:57,243 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:41:57,268 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/clever.wvr.c[2133,2146] [2021-10-07 15:41:57,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:41:57,291 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:41:57,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57 WrapperNode [2021-10-07 15:41:57,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:41:57,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:41:57,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:41:57,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:41:57,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:41:57,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:41:57,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:41:57,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:41:57,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:41:57,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:41:57,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:41:57,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:41:57,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (1/1) ... [2021-10-07 15:41:57,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:41:57,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:41:57,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:41:57,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:41:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:41:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:41:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:41:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:41:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:41:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:41:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:41:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:41:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:41:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:41:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:41:57,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:41:57,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:41:57,993 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-07 15:41:57,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:41:57 BoogieIcfgContainer [2021-10-07 15:41:57,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:41:58,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:41:58,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:41:58,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:41:58,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:41:57" (1/3) ... [2021-10-07 15:41:58,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a801b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:41:58, skipping insertion in model container [2021-10-07 15:41:58,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:41:57" (2/3) ... [2021-10-07 15:41:58,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a801b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:41:58, skipping insertion in model container [2021-10-07 15:41:58,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:41:57" (3/3) ... [2021-10-07 15:41:58,036 INFO L111 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2021-10-07 15:41:58,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:41:58,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 15:41:58,042 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:41:58,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,078 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,078 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,078 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,079 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,079 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,079 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,082 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,082 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,082 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,089 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,090 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,090 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:41:58,103 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:41:58,158 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:41:58,166 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:41:58,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 15:41:58,190 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:41:58,204 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 118 transitions, 252 flow [2021-10-07 15:41:58,207 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 118 transitions, 252 flow [2021-10-07 15:41:58,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 118 transitions, 252 flow [2021-10-07 15:41:58,297 INFO L129 PetriNetUnfolder]: 9/116 cut-off events. [2021-10-07 15:41:58,297 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:41:58,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 116 events. 9/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-10-07 15:41:58,311 INFO L116 LiptonReduction]: Number of co-enabled transitions 972 [2021-10-07 15:42:08,662 INFO L131 LiptonReduction]: Checked pairs total: 1053 [2021-10-07 15:42:08,662 INFO L133 LiptonReduction]: Total number of compositions: 124 [2021-10-07 15:42:08,674 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 27 transitions, 70 flow [2021-10-07 15:42:08,691 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 51 states, 41 states have (on average 3.048780487804878) internal successors, (125), 50 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 3.048780487804878) internal successors, (125), 50 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:42:08,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:08,705 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:42:08,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:08,711 INFO L82 PathProgramCache]: Analyzing trace with hash 456, now seen corresponding path program 1 times [2021-10-07 15:42:08,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:08,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317510251] [2021-10-07 15:42:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:08,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:08,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:08,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:08,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:42:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:08,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:42:08,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:08,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:08,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:08,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317510251] [2021-10-07 15:42:08,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317510251] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:42:08,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:42:08,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:42:08,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218893744] [2021-10-07 15:42:08,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:42:08,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:08,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:42:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:42:08,842 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 3.048780487804878) internal successors, (125), 50 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:08,857 INFO L93 Difference]: Finished difference Result 48 states and 122 transitions. [2021-10-07 15:42:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:42:08,859 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 15:42:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:08,870 INFO L225 Difference]: With dead ends: 48 [2021-10-07 15:42:08,870 INFO L226 Difference]: Without dead ends: 48 [2021-10-07 15:42:08,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:42:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-07 15:42:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-07 15:42:08,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 2.975609756097561) internal successors, (122), 47 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 122 transitions. [2021-10-07 15:42:08,911 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 122 transitions. Word has length 1 [2021-10-07 15:42:08,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:08,911 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 122 transitions. [2021-10-07 15:42:08,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 122 transitions. [2021-10-07 15:42:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:42:08,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:08,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:42:08,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:09,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:09,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:09,126 INFO L82 PathProgramCache]: Analyzing trace with hash 448912, now seen corresponding path program 1 times [2021-10-07 15:42:09,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:09,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390927574] [2021-10-07 15:42:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:09,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:09,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:09,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:09,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:42:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:09,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:42:09,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:09,300 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 15:42:09,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 15:42:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:09,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:09,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:09,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390927574] [2021-10-07 15:42:09,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390927574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:42:09,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:42:09,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:42:09,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205284133] [2021-10-07 15:42:09,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:42:09,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:42:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:42:09,364 INFO L87 Difference]: Start difference. First operand 48 states and 122 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:09,398 INFO L93 Difference]: Finished difference Result 43 states and 111 transitions. [2021-10-07 15:42:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:42:09,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:42:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:09,400 INFO L225 Difference]: With dead ends: 43 [2021-10-07 15:42:09,400 INFO L226 Difference]: Without dead ends: 43 [2021-10-07 15:42:09,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:42:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-07 15:42:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-07 15:42:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 2.9210526315789473) internal successors, (111), 42 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 111 transitions. [2021-10-07 15:42:09,409 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 111 transitions. Word has length 3 [2021-10-07 15:42:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:09,410 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 111 transitions. [2021-10-07 15:42:09,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:09,411 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 111 transitions. [2021-10-07 15:42:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:42:09,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:09,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:42:09,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:09,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:09,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:09,629 INFO L82 PathProgramCache]: Analyzing trace with hash 448913, now seen corresponding path program 1 times [2021-10-07 15:42:09,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:09,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140300898] [2021-10-07 15:42:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:09,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:09,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:09,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:42:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:09,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:42:09,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:09,800 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 15:42:09,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-07 15:42:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:09,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:09,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:09,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140300898] [2021-10-07 15:42:09,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140300898] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:42:09,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:42:09,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:42:09,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136133315] [2021-10-07 15:42:09,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:42:09,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:42:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:42:09,979 INFO L87 Difference]: Start difference. First operand 43 states and 111 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:10,018 INFO L93 Difference]: Finished difference Result 38 states and 100 transitions. [2021-10-07 15:42:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:42:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:42:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:10,020 INFO L225 Difference]: With dead ends: 38 [2021-10-07 15:42:10,020 INFO L226 Difference]: Without dead ends: 38 [2021-10-07 15:42:10,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:42:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-07 15:42:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-07 15:42:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 2.857142857142857) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 100 transitions. [2021-10-07 15:42:10,039 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 100 transitions. Word has length 3 [2021-10-07 15:42:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:10,041 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 100 transitions. [2021-10-07 15:42:10,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 100 transitions. [2021-10-07 15:42:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:42:10,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:10,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:42:10,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-07 15:42:10,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:10,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:10,257 INFO L82 PathProgramCache]: Analyzing trace with hash 431413127, now seen corresponding path program 1 times [2021-10-07 15:42:10,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:10,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487487518] [2021-10-07 15:42:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:10,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:10,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:10,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:10,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:42:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:10,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:42:10,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:10,339 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 15:42:10,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 15:42:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:10,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:10,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:10,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487487518] [2021-10-07 15:42:10,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487487518] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:42:10,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:42:10,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:42:10,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726001869] [2021-10-07 15:42:10,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:42:10,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:42:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:42:10,413 INFO L87 Difference]: Start difference. First operand 38 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:10,432 INFO L93 Difference]: Finished difference Result 32 states and 80 transitions. [2021-10-07 15:42:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:42:10,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:42:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:10,434 INFO L225 Difference]: With dead ends: 32 [2021-10-07 15:42:10,435 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 15:42:10,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:42:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 15:42:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 15:42:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 80 transitions. [2021-10-07 15:42:10,441 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 80 transitions. Word has length 5 [2021-10-07 15:42:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:10,441 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 80 transitions. [2021-10-07 15:42:10,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 80 transitions. [2021-10-07 15:42:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:42:10,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:10,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:42:10,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:10,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:10,654 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:10,655 INFO L82 PathProgramCache]: Analyzing trace with hash 431413128, now seen corresponding path program 1 times [2021-10-07 15:42:10,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:10,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115654679] [2021-10-07 15:42:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:10,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:10,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:10,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:10,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:42:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:10,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:42:10,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:10,816 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 15:42:10,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 47 [2021-10-07 15:42:10,827 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 48 treesize of output 46 [2021-10-07 15:42:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:10,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:11,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:11,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115654679] [2021-10-07 15:42:11,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115654679] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:42:11,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:42:11,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:42:11,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634246341] [2021-10-07 15:42:11,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:42:11,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:42:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:42:11,068 INFO L87 Difference]: Start difference. First operand 32 states and 80 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:11,083 INFO L93 Difference]: Finished difference Result 26 states and 60 transitions. [2021-10-07 15:42:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:42:11,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:42:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:11,085 INFO L225 Difference]: With dead ends: 26 [2021-10-07 15:42:11,085 INFO L226 Difference]: Without dead ends: 26 [2021-10-07 15:42:11,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:42:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-07 15:42:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-07 15:42:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 60 transitions. [2021-10-07 15:42:11,090 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 60 transitions. Word has length 5 [2021-10-07 15:42:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:11,090 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 60 transitions. [2021-10-07 15:42:11,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:11,090 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 60 transitions. [2021-10-07 15:42:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:42:11,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:11,091 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:11,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:11,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:11,299 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:11,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1991984029, now seen corresponding path program 1 times [2021-10-07 15:42:11,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:11,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284616436] [2021-10-07 15:42:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:11,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:11,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:11,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:42:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:42:11,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:11,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:11,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:11,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284616436] [2021-10-07 15:42:11,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284616436] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:42:11,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:42:11,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:42:11,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25110331] [2021-10-07 15:42:11,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:42:11,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:42:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:42:11,501 INFO L87 Difference]: Start difference. First operand 26 states and 60 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:11,517 INFO L93 Difference]: Finished difference Result 49 states and 117 transitions. [2021-10-07 15:42:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:42:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:42:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:11,519 INFO L225 Difference]: With dead ends: 49 [2021-10-07 15:42:11,519 INFO L226 Difference]: Without dead ends: 44 [2021-10-07 15:42:11,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:42:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-07 15:42:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-07 15:42:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 43 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 107 transitions. [2021-10-07 15:42:11,527 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 107 transitions. Word has length 11 [2021-10-07 15:42:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:11,527 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 107 transitions. [2021-10-07 15:42:11,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 107 transitions. [2021-10-07 15:42:11,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:42:11,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:11,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:11,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-07 15:42:11,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:11,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash -982075245, now seen corresponding path program 1 times [2021-10-07 15:42:11,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:11,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354089575] [2021-10-07 15:42:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:11,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:11,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:11,745 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:11,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:42:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:11,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:42:11,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:11,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:11,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:11,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354089575] [2021-10-07 15:42:11,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354089575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:42:11,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:42:11,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:42:11,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734238235] [2021-10-07 15:42:11,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:42:11,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:42:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:42:11,987 INFO L87 Difference]: Start difference. First operand 44 states and 107 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:12,155 INFO L93 Difference]: Finished difference Result 102 states and 236 transitions. [2021-10-07 15:42:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:42:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:42:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:12,159 INFO L225 Difference]: With dead ends: 102 [2021-10-07 15:42:12,159 INFO L226 Difference]: Without dead ends: 94 [2021-10-07 15:42:12,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:42:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-07 15:42:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2021-10-07 15:42:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 53 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2021-10-07 15:42:12,179 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 12 [2021-10-07 15:42:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:12,180 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2021-10-07 15:42:12,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2021-10-07 15:42:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:42:12,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:12,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:12,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:12,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:12,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:12,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:12,384 INFO L82 PathProgramCache]: Analyzing trace with hash 769993205, now seen corresponding path program 2 times [2021-10-07 15:42:12,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:12,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898346565] [2021-10-07 15:42:12,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:42:12,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:12,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:12,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:12,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:42:12,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:42:12,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:12,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:42:12,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:12,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:12,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:12,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898346565] [2021-10-07 15:42:12,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898346565] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:12,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:12,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:42:12,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049864830] [2021-10-07 15:42:12,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:42:12,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:12,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:42:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:42:12,694 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:12,929 INFO L93 Difference]: Finished difference Result 122 states and 303 transitions. [2021-10-07 15:42:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:42:12,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:42:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:12,931 INFO L225 Difference]: With dead ends: 122 [2021-10-07 15:42:12,932 INFO L226 Difference]: Without dead ends: 122 [2021-10-07 15:42:12,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:42:12,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-07 15:42:12,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 70. [2021-10-07 15:42:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.782608695652174) internal successors, (192), 69 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 192 transitions. [2021-10-07 15:42:12,940 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 192 transitions. Word has length 12 [2021-10-07 15:42:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:12,941 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 192 transitions. [2021-10-07 15:42:12,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 192 transitions. [2021-10-07 15:42:12,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:42:12,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:12,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:12,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:13,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:13,160 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:13,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1299918539, now seen corresponding path program 1 times [2021-10-07 15:42:13,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:13,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587478832] [2021-10-07 15:42:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:13,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:13,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:13,166 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:13,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:42:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:13,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:42:13,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:13,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:13,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:13,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587478832] [2021-10-07 15:42:13,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587478832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:13,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:13,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:42:13,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946898221] [2021-10-07 15:42:13,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:42:13,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:42:13,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:42:13,659 INFO L87 Difference]: Start difference. First operand 70 states and 192 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:13,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:13,870 INFO L93 Difference]: Finished difference Result 150 states and 393 transitions. [2021-10-07 15:42:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:42:13,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:42:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:13,872 INFO L225 Difference]: With dead ends: 150 [2021-10-07 15:42:13,872 INFO L226 Difference]: Without dead ends: 110 [2021-10-07 15:42:13,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:42:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-07 15:42:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2021-10-07 15:42:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.967032967032967) internal successors, (270), 91 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 270 transitions. [2021-10-07 15:42:13,882 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 270 transitions. Word has length 14 [2021-10-07 15:42:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:13,882 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 270 transitions. [2021-10-07 15:42:13,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 270 transitions. [2021-10-07 15:42:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:42:13,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:13,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:13,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:14,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:14,097 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash 884090658, now seen corresponding path program 1 times [2021-10-07 15:42:14,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:14,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050197229] [2021-10-07 15:42:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:14,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:14,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:14,101 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:14,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:42:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:14,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:42:14,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:14,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:14,465 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:14,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050197229] [2021-10-07 15:42:14,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050197229] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:14,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:14,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:42:14,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80349677] [2021-10-07 15:42:14,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:42:14,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:42:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:42:14,467 INFO L87 Difference]: Start difference. First operand 92 states and 270 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:14,673 INFO L93 Difference]: Finished difference Result 212 states and 573 transitions. [2021-10-07 15:42:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:42:14,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:42:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:14,681 INFO L225 Difference]: With dead ends: 212 [2021-10-07 15:42:14,681 INFO L226 Difference]: Without dead ends: 212 [2021-10-07 15:42:14,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:42:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-07 15:42:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 108. [2021-10-07 15:42:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.9813084112149535) internal successors, (319), 107 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 319 transitions. [2021-10-07 15:42:14,704 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 319 transitions. Word has length 14 [2021-10-07 15:42:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:14,704 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 319 transitions. [2021-10-07 15:42:14,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 319 transitions. [2021-10-07 15:42:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:42:14,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:14,708 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:14,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:14,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:14,921 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:14,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:14,922 INFO L82 PathProgramCache]: Analyzing trace with hash 209453045, now seen corresponding path program 2 times [2021-10-07 15:42:14,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:14,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104136207] [2021-10-07 15:42:14,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:42:14,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:14,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:14,925 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:14,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:42:15,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:42:15,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:15,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:42:15,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:15,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:15,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:15,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104136207] [2021-10-07 15:42:15,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104136207] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:15,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:15,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:42:15,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339790849] [2021-10-07 15:42:15,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:42:15,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:42:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:42:15,520 INFO L87 Difference]: Start difference. First operand 108 states and 319 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:16,103 INFO L93 Difference]: Finished difference Result 321 states and 869 transitions. [2021-10-07 15:42:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:42:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:42:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:16,107 INFO L225 Difference]: With dead ends: 321 [2021-10-07 15:42:16,107 INFO L226 Difference]: Without dead ends: 261 [2021-10-07 15:42:16,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 385.2ms TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:42:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-07 15:42:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 130. [2021-10-07 15:42:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 3.1627906976744184) internal successors, (408), 129 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 408 transitions. [2021-10-07 15:42:16,118 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 408 transitions. Word has length 14 [2021-10-07 15:42:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:16,118 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 408 transitions. [2021-10-07 15:42:16,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 408 transitions. [2021-10-07 15:42:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:42:16,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:16,121 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:16,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:16,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:16,333 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:16,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2051346601, now seen corresponding path program 3 times [2021-10-07 15:42:16,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:16,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686332768] [2021-10-07 15:42:16,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:42:16,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:16,337 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:16,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:42:16,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:42:16,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:16,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:42:16,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:16,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:16,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:16,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686332768] [2021-10-07 15:42:16,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686332768] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:16,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:16,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:42:16,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473302596] [2021-10-07 15:42:16,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:42:16,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:42:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:42:16,884 INFO L87 Difference]: Start difference. First operand 130 states and 408 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:17,167 INFO L93 Difference]: Finished difference Result 260 states and 782 transitions. [2021-10-07 15:42:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:42:17,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:42:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:17,171 INFO L225 Difference]: With dead ends: 260 [2021-10-07 15:42:17,171 INFO L226 Difference]: Without dead ends: 210 [2021-10-07 15:42:17,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 237.9ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:42:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-07 15:42:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 148. [2021-10-07 15:42:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 3.2653061224489797) internal successors, (480), 147 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 480 transitions. [2021-10-07 15:42:17,180 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 480 transitions. Word has length 14 [2021-10-07 15:42:17,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:17,180 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 480 transitions. [2021-10-07 15:42:17,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:17,181 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 480 transitions. [2021-10-07 15:42:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:17,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:17,182 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:17,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:17,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:17,399 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:17,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1865108394, now seen corresponding path program 1 times [2021-10-07 15:42:17,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:17,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847816626] [2021-10-07 15:42:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:42:17,401 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:17,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:17,402 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:17,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:42:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:17,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:42:17,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:17,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:17,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:17,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847816626] [2021-10-07 15:42:17,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847816626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:17,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:17,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:42:17,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680363209] [2021-10-07 15:42:17,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:42:17,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:42:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:42:17,938 INFO L87 Difference]: Start difference. First operand 148 states and 480 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:18,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:18,520 INFO L93 Difference]: Finished difference Result 256 states and 731 transitions. [2021-10-07 15:42:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:42:18,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:18,523 INFO L225 Difference]: With dead ends: 256 [2021-10-07 15:42:18,524 INFO L226 Difference]: Without dead ends: 246 [2021-10-07 15:42:18,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 361.1ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:42:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-07 15:42:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 182. [2021-10-07 15:42:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 3.1988950276243093) internal successors, (579), 181 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 579 transitions. [2021-10-07 15:42:18,533 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 579 transitions. Word has length 16 [2021-10-07 15:42:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:18,534 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 579 transitions. [2021-10-07 15:42:18,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:18,534 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 579 transitions. [2021-10-07 15:42:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:18,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:18,535 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:18,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:18,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:18,754 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:18,755 INFO L82 PathProgramCache]: Analyzing trace with hash 985459906, now seen corresponding path program 2 times [2021-10-07 15:42:18,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:18,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623870079] [2021-10-07 15:42:18,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:42:18,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:18,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:18,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:18,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:42:18,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:42:18,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:18,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:42:18,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:19,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:19,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:19,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623870079] [2021-10-07 15:42:19,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623870079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:19,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:19,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:42:19,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440569882] [2021-10-07 15:42:19,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:42:19,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:19,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:42:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:42:19,411 INFO L87 Difference]: Start difference. First operand 182 states and 579 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:20,292 INFO L93 Difference]: Finished difference Result 302 states and 817 transitions. [2021-10-07 15:42:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:42:20,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:20,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:20,295 INFO L225 Difference]: With dead ends: 302 [2021-10-07 15:42:20,295 INFO L226 Difference]: Without dead ends: 296 [2021-10-07 15:42:20,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 734.2ms TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:42:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-07 15:42:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 192. [2021-10-07 15:42:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 3.2146596858638743) internal successors, (614), 191 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 614 transitions. [2021-10-07 15:42:20,306 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 614 transitions. Word has length 16 [2021-10-07 15:42:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:20,306 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 614 transitions. [2021-10-07 15:42:20,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 614 transitions. [2021-10-07 15:42:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:20,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:20,308 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:20,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:20,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:20,520 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:20,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1484024360, now seen corresponding path program 3 times [2021-10-07 15:42:20,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:20,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218826126] [2021-10-07 15:42:20,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:42:20,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:20,524 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:20,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:42:20,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:42:20,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:20,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:42:20,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:20,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:21,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:21,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218826126] [2021-10-07 15:42:21,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218826126] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:21,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:21,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:42:21,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834825277] [2021-10-07 15:42:21,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:42:21,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:21,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:42:21,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:42:21,109 INFO L87 Difference]: Start difference. First operand 192 states and 614 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:21,617 INFO L93 Difference]: Finished difference Result 290 states and 806 transitions. [2021-10-07 15:42:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:42:21,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:21,621 INFO L225 Difference]: With dead ends: 290 [2021-10-07 15:42:21,621 INFO L226 Difference]: Without dead ends: 290 [2021-10-07 15:42:21,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 495.3ms TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:42:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-07 15:42:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 200. [2021-10-07 15:42:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 3.2261306532663316) internal successors, (642), 199 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 642 transitions. [2021-10-07 15:42:21,631 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 642 transitions. Word has length 16 [2021-10-07 15:42:21,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:21,632 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 642 transitions. [2021-10-07 15:42:21,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 642 transitions. [2021-10-07 15:42:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:21,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:21,633 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:21,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-07 15:42:21,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:21,846 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:21,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1188871017, now seen corresponding path program 4 times [2021-10-07 15:42:21,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:21,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266344735] [2021-10-07 15:42:21,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:42:21,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:21,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:21,849 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:21,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:42:21,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:42:21,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:21,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:42:21,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:22,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:22,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:22,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266344735] [2021-10-07 15:42:22,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266344735] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:22,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:22,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:42:22,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193561865] [2021-10-07 15:42:22,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:42:22,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:42:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:42:22,719 INFO L87 Difference]: Start difference. First operand 200 states and 642 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:24,567 INFO L93 Difference]: Finished difference Result 558 states and 1642 transitions. [2021-10-07 15:42:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:42:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:24,573 INFO L225 Difference]: With dead ends: 558 [2021-10-07 15:42:24,573 INFO L226 Difference]: Without dead ends: 518 [2021-10-07 15:42:24,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1739.9ms TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:42:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-07 15:42:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 336. [2021-10-07 15:42:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.325373134328358) internal successors, (1114), 335 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1114 transitions. [2021-10-07 15:42:24,592 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1114 transitions. Word has length 16 [2021-10-07 15:42:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:24,593 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1114 transitions. [2021-10-07 15:42:24,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1114 transitions. [2021-10-07 15:42:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:24,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:24,595 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:24,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:24,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:24,807 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:24,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1758140309, now seen corresponding path program 5 times [2021-10-07 15:42:24,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:24,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315047112] [2021-10-07 15:42:24,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:42:24,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:24,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:24,811 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:24,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:42:24,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:42:24,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:24,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:42:24,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:25,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:25,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:25,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315047112] [2021-10-07 15:42:25,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315047112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:25,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:25,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-07 15:42:25,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322915210] [2021-10-07 15:42:25,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:42:25,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:42:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:42:25,742 INFO L87 Difference]: Start difference. First operand 336 states and 1114 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:28,521 INFO L93 Difference]: Finished difference Result 704 states and 2093 transitions. [2021-10-07 15:42:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:42:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:28,528 INFO L225 Difference]: With dead ends: 704 [2021-10-07 15:42:28,528 INFO L226 Difference]: Without dead ends: 679 [2021-10-07 15:42:28,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1410.4ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:42:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-10-07 15:42:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 422. [2021-10-07 15:42:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.4038004750593824) internal successors, (1433), 421 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1433 transitions. [2021-10-07 15:42:28,551 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1433 transitions. Word has length 16 [2021-10-07 15:42:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:28,551 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 1433 transitions. [2021-10-07 15:42:28,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1433 transitions. [2021-10-07 15:42:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:28,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:28,553 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:28,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:28,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:28,761 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash -626016602, now seen corresponding path program 6 times [2021-10-07 15:42:28,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:28,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840625248] [2021-10-07 15:42:28,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:42:28,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:28,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:28,765 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:28,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:42:28,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:42:28,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:28,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:42:28,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:29,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:29,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:29,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840625248] [2021-10-07 15:42:29,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840625248] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:29,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:29,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:42:29,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717106888] [2021-10-07 15:42:29,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:42:29,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:29,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:42:29,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:42:29,399 INFO L87 Difference]: Start difference. First operand 422 states and 1433 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:29,842 INFO L93 Difference]: Finished difference Result 534 states and 1767 transitions. [2021-10-07 15:42:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:42:29,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:29,847 INFO L225 Difference]: With dead ends: 534 [2021-10-07 15:42:29,848 INFO L226 Difference]: Without dead ends: 524 [2021-10-07 15:42:29,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 376.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:42:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-07 15:42:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 478. [2021-10-07 15:42:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 3.461215932914046) internal successors, (1651), 477 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1651 transitions. [2021-10-07 15:42:29,869 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1651 transitions. Word has length 16 [2021-10-07 15:42:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:29,870 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1651 transitions. [2021-10-07 15:42:29,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1651 transitions. [2021-10-07 15:42:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:29,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:29,872 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:29,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-07 15:42:30,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:30,088 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:30,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1405958599, now seen corresponding path program 7 times [2021-10-07 15:42:30,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:30,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986270069] [2021-10-07 15:42:30,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:42:30,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:30,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:30,092 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:30,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:42:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:30,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:42:30,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:30,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:30,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:30,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986270069] [2021-10-07 15:42:30,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986270069] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:30,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:30,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:42:30,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172326627] [2021-10-07 15:42:30,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:42:30,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:42:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:42:30,996 INFO L87 Difference]: Start difference. First operand 478 states and 1651 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:33,583 INFO L93 Difference]: Finished difference Result 775 states and 2557 transitions. [2021-10-07 15:42:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:42:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:33,590 INFO L225 Difference]: With dead ends: 775 [2021-10-07 15:42:33,591 INFO L226 Difference]: Without dead ends: 748 [2021-10-07 15:42:33,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2092.8ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:42:33,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-07 15:42:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 614. [2021-10-07 15:42:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.5823817292006526) internal successors, (2196), 613 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2196 transitions. [2021-10-07 15:42:33,621 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2196 transitions. Word has length 16 [2021-10-07 15:42:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:33,621 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 2196 transitions. [2021-10-07 15:42:33,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2196 transitions. [2021-10-07 15:42:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:33,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:33,624 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:33,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:33,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:33,840 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:33,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:33,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1421755612, now seen corresponding path program 8 times [2021-10-07 15:42:33,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:33,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882376832] [2021-10-07 15:42:33,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:42:33,843 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:33,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:33,844 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:33,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:42:34,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:42:34,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:34,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:42:34,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:34,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:34,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:34,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882376832] [2021-10-07 15:42:34,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882376832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:34,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:34,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:42:34,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938238683] [2021-10-07 15:42:34,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:42:34,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:42:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:42:34,396 INFO L87 Difference]: Start difference. First operand 614 states and 2196 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:35,047 INFO L93 Difference]: Finished difference Result 778 states and 2647 transitions. [2021-10-07 15:42:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:42:35,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:35,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:35,055 INFO L225 Difference]: With dead ends: 778 [2021-10-07 15:42:35,055 INFO L226 Difference]: Without dead ends: 778 [2021-10-07 15:42:35,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 382.7ms TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:42:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-10-07 15:42:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 650. [2021-10-07 15:42:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 3.571648690292758) internal successors, (2318), 649 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2318 transitions. [2021-10-07 15:42:35,087 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2318 transitions. Word has length 16 [2021-10-07 15:42:35,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:35,087 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2318 transitions. [2021-10-07 15:42:35,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2318 transitions. [2021-10-07 15:42:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:35,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:35,091 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:35,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:35,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:35,305 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:35,305 INFO L82 PathProgramCache]: Analyzing trace with hash -764079017, now seen corresponding path program 9 times [2021-10-07 15:42:35,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:35,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23079647] [2021-10-07 15:42:35,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:42:35,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:35,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:35,308 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:35,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:42:35,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:42:35,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:35,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:42:35,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:35,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:36,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:36,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23079647] [2021-10-07 15:42:36,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23079647] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:36,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:36,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:42:36,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323951583] [2021-10-07 15:42:36,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:42:36,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:42:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:42:36,385 INFO L87 Difference]: Start difference. First operand 650 states and 2318 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:38,139 INFO L93 Difference]: Finished difference Result 911 states and 3089 transitions. [2021-10-07 15:42:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:42:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:38,146 INFO L225 Difference]: With dead ends: 911 [2021-10-07 15:42:38,146 INFO L226 Difference]: Without dead ends: 884 [2021-10-07 15:42:38,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1673.6ms TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:42:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-07 15:42:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 746. [2021-10-07 15:42:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 3.6241610738255035) internal successors, (2700), 745 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2700 transitions. [2021-10-07 15:42:38,180 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2700 transitions. Word has length 16 [2021-10-07 15:42:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:38,180 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 2700 transitions. [2021-10-07 15:42:38,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2700 transitions. [2021-10-07 15:42:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:42:38,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:38,184 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:38,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:38,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:38,397 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:38,398 INFO L82 PathProgramCache]: Analyzing trace with hash -139087047, now seen corresponding path program 10 times [2021-10-07 15:42:38,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:38,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802283244] [2021-10-07 15:42:38,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:42:38,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:38,401 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:38,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:42:38,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:42:38,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:38,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:42:38,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:38,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:39,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:39,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802283244] [2021-10-07 15:42:39,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802283244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:39,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:39,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:42:39,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645125535] [2021-10-07 15:42:39,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:42:39,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:42:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:42:39,315 INFO L87 Difference]: Start difference. First operand 746 states and 2700 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:41,322 INFO L93 Difference]: Finished difference Result 1168 states and 3936 transitions. [2021-10-07 15:42:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:42:41,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:42:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:41,330 INFO L225 Difference]: With dead ends: 1168 [2021-10-07 15:42:41,331 INFO L226 Difference]: Without dead ends: 1132 [2021-10-07 15:42:41,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1883.4ms TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:42:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-10-07 15:42:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 946. [2021-10-07 15:42:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.6444444444444444) internal successors, (3444), 945 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3444 transitions. [2021-10-07 15:42:41,372 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3444 transitions. Word has length 16 [2021-10-07 15:42:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:41,372 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 3444 transitions. [2021-10-07 15:42:41,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3444 transitions. [2021-10-07 15:42:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:42:41,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:41,376 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:41,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:41,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:41,589 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:41,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1184954828, now seen corresponding path program 11 times [2021-10-07 15:42:41,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:41,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158224365] [2021-10-07 15:42:41,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:42:41,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:41,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:41,592 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:41,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:42:41,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:42:41,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:41,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:42:41,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:42:41,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:42:41,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:41,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158224365] [2021-10-07 15:42:41,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158224365] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:41,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:41,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 15:42:41,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381819773] [2021-10-07 15:42:41,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:42:41,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:42:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:42:41,940 INFO L87 Difference]: Start difference. First operand 946 states and 3444 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:42,090 INFO L93 Difference]: Finished difference Result 1156 states and 3672 transitions. [2021-10-07 15:42:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:42:42,091 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:42:42,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:42,100 INFO L225 Difference]: With dead ends: 1156 [2021-10-07 15:42:42,100 INFO L226 Difference]: Without dead ends: 1156 [2021-10-07 15:42:42,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:42:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-07 15:42:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 866. [2021-10-07 15:42:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 3.384971098265896) internal successors, (2928), 865 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 2928 transitions. [2021-10-07 15:42:42,138 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 2928 transitions. Word has length 18 [2021-10-07 15:42:42,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:42,138 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 2928 transitions. [2021-10-07 15:42:42,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 2928 transitions. [2021-10-07 15:42:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:42:42,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:42,142 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:42,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:42,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:42,354 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1869024583, now seen corresponding path program 12 times [2021-10-07 15:42:42,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:42,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332088941] [2021-10-07 15:42:42,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:42:42,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:42,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:42,356 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:42,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:42:42,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:42:42,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:42,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:42:42,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:42:42,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:42:43,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:43,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332088941] [2021-10-07 15:42:43,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332088941] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:43,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:43,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:42:43,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179150027] [2021-10-07 15:42:43,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:42:43,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:43,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:42:43,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:42:43,036 INFO L87 Difference]: Start difference. First operand 866 states and 2928 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:44,377 INFO L93 Difference]: Finished difference Result 1362 states and 4276 transitions. [2021-10-07 15:42:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:42:44,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:42:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:44,386 INFO L225 Difference]: With dead ends: 1362 [2021-10-07 15:42:44,386 INFO L226 Difference]: Without dead ends: 1358 [2021-10-07 15:42:44,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 741.1ms TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:42:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-10-07 15:42:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 986. [2021-10-07 15:42:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 985 states have (on average 3.369543147208122) internal successors, (3319), 985 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 3319 transitions. [2021-10-07 15:42:44,433 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 3319 transitions. Word has length 18 [2021-10-07 15:42:44,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:44,433 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 3319 transitions. [2021-10-07 15:42:44,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 3319 transitions. [2021-10-07 15:42:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:42:44,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:44,437 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:44,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-07 15:42:44,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:44,650 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:44,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:44,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1465697271, now seen corresponding path program 13 times [2021-10-07 15:42:44,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:44,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79380589] [2021-10-07 15:42:44,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:42:44,652 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:44,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:44,653 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:44,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:42:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:44,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:42:44,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:45,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:42:46,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:46,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79380589] [2021-10-07 15:42:46,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79380589] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:46,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:46,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:42:46,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925642963] [2021-10-07 15:42:46,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:42:46,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:42:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:42:46,123 INFO L87 Difference]: Start difference. First operand 986 states and 3319 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:51,764 INFO L93 Difference]: Finished difference Result 1523 states and 4915 transitions. [2021-10-07 15:42:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 15:42:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:42:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:51,776 INFO L225 Difference]: With dead ends: 1523 [2021-10-07 15:42:51,777 INFO L226 Difference]: Without dead ends: 1496 [2021-10-07 15:42:51,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 5284.5ms TimeCoverageRelationStatistics Valid=521, Invalid=1831, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:42:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-07 15:42:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1134. [2021-10-07 15:42:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 3.4483671668137688) internal successors, (3907), 1133 states have internal predecessors, (3907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 3907 transitions. [2021-10-07 15:42:51,823 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 3907 transitions. Word has length 18 [2021-10-07 15:42:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:51,823 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 3907 transitions. [2021-10-07 15:42:51,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 3907 transitions. [2021-10-07 15:42:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:42:51,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:51,828 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:51,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:52,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:52,041 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:52,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:52,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1525219241, now seen corresponding path program 14 times [2021-10-07 15:42:52,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:52,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873391666] [2021-10-07 15:42:52,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:42:52,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:52,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:52,045 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:52,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:42:52,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:42:52,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:52,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:42:52,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:52,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:52,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:52,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873391666] [2021-10-07 15:42:52,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873391666] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:52,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:52,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-07 15:42:52,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436894703] [2021-10-07 15:42:52,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:42:52,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:42:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:42:52,984 INFO L87 Difference]: Start difference. First operand 1134 states and 3907 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:56,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:56,761 INFO L93 Difference]: Finished difference Result 1812 states and 5711 transitions. [2021-10-07 15:42:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:42:56,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:42:56,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:56,776 INFO L225 Difference]: With dead ends: 1812 [2021-10-07 15:42:56,776 INFO L226 Difference]: Without dead ends: 1812 [2021-10-07 15:42:56,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3090.0ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:42:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-10-07 15:42:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1356. [2021-10-07 15:42:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.4981549815498156) internal successors, (4740), 1355 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4740 transitions. [2021-10-07 15:42:56,833 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4740 transitions. Word has length 18 [2021-10-07 15:42:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:56,833 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4740 transitions. [2021-10-07 15:42:56,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4740 transitions. [2021-10-07 15:42:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:42:56,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:56,839 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:56,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:57,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:57,052 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:42:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:57,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1820487333, now seen corresponding path program 15 times [2021-10-07 15:42:57,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:57,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901263102] [2021-10-07 15:42:57,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:42:57,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:57,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:57,055 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:57,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:42:57,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:42:57,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:42:57,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:42:57,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:57,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:42:58,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:58,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901263102] [2021-10-07 15:42:58,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901263102] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:58,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:58,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:42:58,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218362249] [2021-10-07 15:42:58,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:42:58,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:42:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:42:58,124 INFO L87 Difference]: Start difference. First operand 1356 states and 4740 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:02,019 INFO L93 Difference]: Finished difference Result 2174 states and 6924 transitions. [2021-10-07 15:43:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:43:02,020 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:43:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:02,036 INFO L225 Difference]: With dead ends: 2174 [2021-10-07 15:43:02,036 INFO L226 Difference]: Without dead ends: 2174 [2021-10-07 15:43:02,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3096.6ms TimeCoverageRelationStatistics Valid=295, Invalid=761, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:43:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2021-10-07 15:43:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1584. [2021-10-07 15:43:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 3.5754895767530006) internal successors, (5660), 1583 states have internal predecessors, (5660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 5660 transitions. [2021-10-07 15:43:02,106 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 5660 transitions. Word has length 18 [2021-10-07 15:43:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:02,107 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 5660 transitions. [2021-10-07 15:43:02,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 5660 transitions. [2021-10-07 15:43:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:43:02,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:02,112 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:43:02,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:02,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:02,327 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:43:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:02,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1068988117, now seen corresponding path program 4 times [2021-10-07 15:43:02,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:02,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074542521] [2021-10-07 15:43:02,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:43:02,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:02,331 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:02,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:43:02,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:43:02,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:43:02,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:02,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:03,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:43:03,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074542521] [2021-10-07 15:43:03,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074542521] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:43:03,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:43:03,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:43:03,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832749091] [2021-10-07 15:43:03,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:43:03,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:43:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:43:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:43:03,312 INFO L87 Difference]: Start difference. First operand 1584 states and 5660 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:05,700 INFO L93 Difference]: Finished difference Result 2436 states and 8360 transitions. [2021-10-07 15:43:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:43:05,701 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:43:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:05,713 INFO L225 Difference]: With dead ends: 2436 [2021-10-07 15:43:05,713 INFO L226 Difference]: Without dead ends: 2422 [2021-10-07 15:43:05,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1894.1ms TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:43:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-10-07 15:43:05,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1942. [2021-10-07 15:43:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 3.6439979392065944) internal successors, (7073), 1941 states have internal predecessors, (7073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 7073 transitions. [2021-10-07 15:43:05,792 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 7073 transitions. Word has length 18 [2021-10-07 15:43:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:05,792 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 7073 transitions. [2021-10-07 15:43:05,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 7073 transitions. [2021-10-07 15:43:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:43:05,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:05,801 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:43:05,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:06,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:06,015 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:43:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1400496149, now seen corresponding path program 5 times [2021-10-07 15:43:06,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:06,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403435586] [2021-10-07 15:43:06,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:43:06,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:06,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:06,017 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:06,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:43:06,271 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-07 15:43:06,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:06,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:43:06,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:06,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:07,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:43:07,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403435586] [2021-10-07 15:43:07,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403435586] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:43:07,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:43:07,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:43:07,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922122346] [2021-10-07 15:43:07,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:43:07,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:43:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:43:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:43:07,025 INFO L87 Difference]: Start difference. First operand 1942 states and 7073 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:08,232 INFO L93 Difference]: Finished difference Result 2163 states and 7664 transitions. [2021-10-07 15:43:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:43:08,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:43:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:08,241 INFO L225 Difference]: With dead ends: 2163 [2021-10-07 15:43:08,241 INFO L226 Difference]: Without dead ends: 2024 [2021-10-07 15:43:08,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1054.1ms TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:43:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-10-07 15:43:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1884. [2021-10-07 15:43:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 3.626128518321827) internal successors, (6828), 1883 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 6828 transitions. [2021-10-07 15:43:08,298 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 6828 transitions. Word has length 18 [2021-10-07 15:43:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:08,299 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 6828 transitions. [2021-10-07 15:43:08,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 6828 transitions. [2021-10-07 15:43:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:43:08,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:08,304 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:43:08,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-07 15:43:08,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:08,517 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:43:08,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:08,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2078634419, now seen corresponding path program 6 times [2021-10-07 15:43:08,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:08,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541398392] [2021-10-07 15:43:08,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:43:08,519 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:08,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:08,521 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:08,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:43:08,799 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:43:08,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:08,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:43:08,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:09,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:09,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:43:09,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541398392] [2021-10-07 15:43:09,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541398392] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:43:09,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:43:09,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:43:09,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988939325] [2021-10-07 15:43:09,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:43:09,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:43:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:43:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:43:09,553 INFO L87 Difference]: Start difference. First operand 1884 states and 6828 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:16,101 INFO L93 Difference]: Finished difference Result 3198 states and 10827 transitions. [2021-10-07 15:43:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 15:43:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:43:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:16,112 INFO L225 Difference]: With dead ends: 3198 [2021-10-07 15:43:16,113 INFO L226 Difference]: Without dead ends: 3198 [2021-10-07 15:43:16,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4723.0ms TimeCoverageRelationStatistics Valid=516, Invalid=1646, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:43:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-10-07 15:43:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2516. [2021-10-07 15:43:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2515 states have (on average 3.732803180914513) internal successors, (9388), 2515 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 9388 transitions. [2021-10-07 15:43:16,216 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 9388 transitions. Word has length 18 [2021-10-07 15:43:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:16,216 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 9388 transitions. [2021-10-07 15:43:16,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 9388 transitions. [2021-10-07 15:43:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:43:16,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:16,224 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:43:16,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:16,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:16,455 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:43:16,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash -389092150, now seen corresponding path program 16 times [2021-10-07 15:43:16,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:16,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190625366] [2021-10-07 15:43:16,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:43:16,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:16,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:16,459 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:16,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:43:16,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:43:16,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:16,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:43:16,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:16,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:16,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:43:16,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190625366] [2021-10-07 15:43:16,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190625366] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:43:16,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:43:16,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-07 15:43:16,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848726615] [2021-10-07 15:43:16,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:43:16,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:43:16,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:43:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:43:16,908 INFO L87 Difference]: Start difference. First operand 2516 states and 9388 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2021-10-07 15:43:16,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:16,960 INFO L93 Difference]: Finished difference Result 2510 states and 9171 transitions. [2021-10-07 15:43:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:43:16,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 18 [2021-10-07 15:43:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:16,972 INFO L225 Difference]: With dead ends: 2510 [2021-10-07 15:43:16,972 INFO L226 Difference]: Without dead ends: 2462 [2021-10-07 15:43:16,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:43:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-10-07 15:43:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2370. [2021-10-07 15:43:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2369 states have (on average 3.662726888982693) internal successors, (8677), 2369 states have internal predecessors, (8677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 8677 transitions. [2021-10-07 15:43:17,048 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 8677 transitions. Word has length 18 [2021-10-07 15:43:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:17,048 INFO L470 AbstractCegarLoop]: Abstraction has 2370 states and 8677 transitions. [2021-10-07 15:43:17,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2021-10-07 15:43:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 8677 transitions. [2021-10-07 15:43:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:43:17,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:17,055 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:43:17,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:17,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:17,270 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:43:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:17,271 INFO L82 PathProgramCache]: Analyzing trace with hash -404889163, now seen corresponding path program 7 times [2021-10-07 15:43:17,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:17,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477099304] [2021-10-07 15:43:17,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:43:17,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:17,273 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:17,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:43:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:43:17,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:43:17,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:17,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:18,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:43:18,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477099304] [2021-10-07 15:43:18,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477099304] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:43:18,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:43:18,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:43:18,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030328560] [2021-10-07 15:43:18,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:43:18,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:43:18,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:43:18,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:43:18,265 INFO L87 Difference]: Start difference. First operand 2370 states and 8677 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:23,947 INFO L93 Difference]: Finished difference Result 3634 states and 12418 transitions. [2021-10-07 15:43:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:43:23,948 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:43:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:23,962 INFO L225 Difference]: With dead ends: 3634 [2021-10-07 15:43:23,962 INFO L226 Difference]: Without dead ends: 3622 [2021-10-07 15:43:23,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 4631.4ms TimeCoverageRelationStatistics Valid=417, Invalid=1305, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:43:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2021-10-07 15:43:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 2960. [2021-10-07 15:43:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2959 states have (on average 3.7127407908077052) internal successors, (10986), 2959 states have internal predecessors, (10986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 10986 transitions. [2021-10-07 15:43:24,105 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 10986 transitions. Word has length 18 [2021-10-07 15:43:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:24,105 INFO L470 AbstractCegarLoop]: Abstraction has 2960 states and 10986 transitions. [2021-10-07 15:43:24,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 10986 transitions. [2021-10-07 15:43:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:43:24,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:24,112 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:43:24,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:24,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:24,326 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:43:24,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:24,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2104320187, now seen corresponding path program 17 times [2021-10-07 15:43:24,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:24,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523452157] [2021-10-07 15:43:24,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:43:24,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:24,329 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:24,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:43:24,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:43:24,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:24,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:43:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:24,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:25,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:43:25,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523452157] [2021-10-07 15:43:25,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-07 15:43:25,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [522273161] [2021-10-07 15:43:25,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:43:25,256 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 15:43:25,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 15:43:25,258 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 15:43:25,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-10-07 15:43:25,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:43:25,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:25,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:43:25,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:26,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:26,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-07 15:43:26,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432894885] [2021-10-07 15:43:26,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:43:26,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:43:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:43:26,301 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:43:26,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-07 15:43:26,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:43:26,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:26,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:43:26,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:27,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:27,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-07 15:43:27,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:43:27,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-07 15:43:27,141 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-07 15:43:27,141 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-07 15:43:27,144 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:43:27,146 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:43:27,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:43:27,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:43:27,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:43:27,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:43:27,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:43:27,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:43:27,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:43:27,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:43:27,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:43:27,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:43:27,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-07 15:43:27,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:27,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:27,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-07 15:43:27,770 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:43:27,770 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:43:27,772 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-07 15:43:27,775 INFO L168 Benchmark]: Toolchain (without parser) took 90755.67 ms. Allocated memory was 176.2 MB in the beginning and 238.0 MB in the end (delta: 61.9 MB). Free memory was 150.3 MB in the beginning and 121.4 MB in the end (delta: 28.9 MB). Peak memory consumption was 91.3 MB. Max. memory is 8.0 GB. [2021-10-07 15:43:27,775 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 176.2 MB. Free memory was 147.0 MB in the beginning and 146.9 MB in the end (delta: 102.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:43:27,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.92 ms. Allocated memory is still 176.2 MB. Free memory was 150.0 MB in the beginning and 138.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:43:27,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.72 ms. Allocated memory is still 176.2 MB. Free memory was 138.8 MB in the beginning and 137.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:43:27,776 INFO L168 Benchmark]: Boogie Preprocessor took 32.26 ms. Allocated memory is still 176.2 MB. Free memory was 137.1 MB in the beginning and 135.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:43:27,777 INFO L168 Benchmark]: RCFGBuilder took 627.00 ms. Allocated memory is still 176.2 MB. Free memory was 135.7 MB in the beginning and 122.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:43:27,777 INFO L168 Benchmark]: TraceAbstraction took 89773.15 ms. Allocated memory was 176.2 MB in the beginning and 238.0 MB in the end (delta: 61.9 MB). Free memory was 122.3 MB in the beginning and 121.4 MB in the end (delta: 851.3 kB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:43:27,779 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 176.2 MB. Free memory was 147.0 MB in the beginning and 146.9 MB in the end (delta: 102.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.92 ms. Allocated memory is still 176.2 MB. Free memory was 150.0 MB in the beginning and 138.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.72 ms. Allocated memory is still 176.2 MB. Free memory was 138.8 MB in the beginning and 137.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.26 ms. Allocated memory is still 176.2 MB. Free memory was 137.1 MB in the beginning and 135.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 627.00 ms. Allocated memory is still 176.2 MB. Free memory was 135.7 MB in the beginning and 122.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 89773.15 ms. Allocated memory was 176.2 MB in the beginning and 238.0 MB in the end (delta: 61.9 MB). Free memory was 122.3 MB in the beginning and 121.4 MB in the end (delta: 851.3 kB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10455.1ms, 116 PlacesBefore, 31 PlacesAfterwards, 118 TransitionsBefore, 27 TransitionsAfterwards, 972 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 124 TotalNumberOfCompositions, 1053 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1053, positive: 1053, positive conditional: 0, positive unconditional: 1053, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 622, positive: 622, positive conditional: 0, positive unconditional: 622, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 622, positive: 622, positive conditional: 0, positive unconditional: 622, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1053, positive: 431, positive conditional: 0, positive unconditional: 431, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 622, unknown conditional: 0, unknown unconditional: 622] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-07 15:43:27,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...