/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/bench-exp2x4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:50:05,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:50:05,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:50:05,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 19:50:05,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 19:50:05,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 19:50:05,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 19:50:05,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 19:50:05,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 19:50:05,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 19:50:05,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 19:50:05,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 19:50:05,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 19:50:05,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 19:50:05,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 19:50:05,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 19:50:05,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 19:50:05,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:50:05,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:50:05,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:50:05,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 19:50:05,356 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:50:05,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:50:05,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:50:05,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:50:05,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:50:05,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:50:05,359 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:50:05,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:50:05,360 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:50:05,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:50:05,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:50:05,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:50:05,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:50:05,361 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 19:50:05,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 19:50:05,361 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 19:50:05,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:50:05,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 19:50:05,362 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 19:50:05,362 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 19:50:05,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:50:05,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:50:05,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:50:05,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:50:05,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:50:05,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:50:05,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:50:05,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:50:05,364 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 19:50:05,365 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 19:50:05,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:50:05,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 19:50:05,365 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:50:05,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:50:05,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:50:05,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:50:05,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:50:05,799 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:50:05,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2021-10-13 19:50:05,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ff939008/68b087973a9340edb4c15623c39f4b89/FLAGe95a34614 [2021-10-13 19:50:06,629 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:50:06,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2021-10-13 19:50:06,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ff939008/68b087973a9340edb4c15623c39f4b89/FLAGe95a34614 [2021-10-13 19:50:06,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ff939008/68b087973a9340edb4c15623c39f4b89 [2021-10-13 19:50:06,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:50:06,968 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 19:50:06,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:50:06,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:50:06,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:50:06,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:06" (1/1) ... [2021-10-13 19:50:06,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43df5760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:06, skipping insertion in model container [2021-10-13 19:50:06,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:06" (1/1) ... [2021-10-13 19:50:06,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:50:07,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:50:07,232 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/bench-exp2x4.wvr.c[2309,2322] [2021-10-13 19:50:07,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:50:07,252 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:50:07,281 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/bench-exp2x4.wvr.c[2309,2322] [2021-10-13 19:50:07,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:50:07,303 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:50:07,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07 WrapperNode [2021-10-13 19:50:07,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:50:07,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:50:07,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:50:07,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:50:07,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:50:07,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:50:07,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:50:07,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:50:07,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:50:07,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:50:07,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:50:07,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:50:07,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:50:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:50:07,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 19:50:07,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 19:50:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:50:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:50:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:50:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:50:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 19:50:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 19:50:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 19:50:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 19:50:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 19:50:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:50:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 19:50:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:50:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:50:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:50:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 19:50:07,521 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 19:50:08,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:50:08,155 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 19:50:08,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:08 BoogieIcfgContainer [2021-10-13 19:50:08,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:50:08,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:50:08,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:50:08,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:50:08,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:06" (1/3) ... [2021-10-13 19:50:08,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1217dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:08, skipping insertion in model container [2021-10-13 19:50:08,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (2/3) ... [2021-10-13 19:50:08,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1217dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:08, skipping insertion in model container [2021-10-13 19:50:08,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:08" (3/3) ... [2021-10-13 19:50:08,172 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2021-10-13 19:50:08,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:50:08,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-13 19:50:08,184 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:50:08,268 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,268 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,269 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,271 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,271 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,271 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,272 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,272 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,273 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,273 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,273 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,289 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,290 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,295 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,301 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,301 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,330 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 19:50:08,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:50:08,470 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 19:50:08,470 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-13 19:50:08,534 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:50:08,573 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 141 transitions, 314 flow [2021-10-13 19:50:08,580 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 141 transitions, 314 flow [2021-10-13 19:50:08,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 141 transitions, 314 flow [2021-10-13 19:50:08,750 INFO L129 PetriNetUnfolder]: 10/137 cut-off events. [2021-10-13 19:50:08,751 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 19:50:08,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 10/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-10-13 19:50:08,763 INFO L116 LiptonReduction]: Number of co-enabled transitions 1960 [2021-10-13 19:50:30,542 INFO L131 LiptonReduction]: Checked pairs total: 2465 [2021-10-13 19:50:30,543 INFO L133 LiptonReduction]: Total number of compositions: 136 [2021-10-13 19:50:30,555 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-13 19:50:30,597 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 19:50:30,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:30,607 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 19:50:30,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:30,613 INFO L82 PathProgramCache]: Analyzing trace with hash 520, now seen corresponding path program 1 times [2021-10-13 19:50:30,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:30,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624710557] [2021-10-13 19:50:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:30,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:30,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:30,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:30,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 19:50:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:30,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 19:50:30,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:30,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:30,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:30,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624710557] [2021-10-13 19:50:30,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624710557] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:30,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:30,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 19:50:30,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859205530] [2021-10-13 19:50:30,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 19:50:30,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 19:50:30,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 19:50:30,738 INFO L87 Difference]: Start difference. First operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:30,769 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-13 19:50:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 19:50:30,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-13 19:50:30,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:30,791 INFO L225 Difference]: With dead ends: 180 [2021-10-13 19:50:30,791 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 19:50:30,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 19:50:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 19:50:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-13 19:50:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 165 states have (on average 4.193939393939394) internal successors, (692), 179 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-13 19:50:30,897 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-13 19:50:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:30,897 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-13 19:50:30,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-13 19:50:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:50:30,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:30,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:50:30,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:31,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:31,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash 511969, now seen corresponding path program 1 times [2021-10-13 19:50:31,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:31,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389481677] [2021-10-13 19:50:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:31,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:31,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:31,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:31,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 19:50:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:31,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:50:31,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:31,404 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 19:50:31,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-13 19:50:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:31,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:31,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:31,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389481677] [2021-10-13 19:50:31,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389481677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:31,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:31,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:31,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716630477] [2021-10-13 19:50:31,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:31,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:31,607 INFO L87 Difference]: Start difference. First operand 180 states and 692 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:31,690 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-13 19:50:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:31,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 19:50:31,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:31,695 INFO L225 Difference]: With dead ends: 170 [2021-10-13 19:50:31,695 INFO L226 Difference]: Without dead ends: 170 [2021-10-13 19:50:31,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:31,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-13 19:50:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-13 19:50:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 4.178343949044586) internal successors, (656), 169 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-13 19:50:31,714 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-13 19:50:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:31,715 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-13 19:50:31,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-13 19:50:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:50:31,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:31,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:50:31,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:31,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:31,932 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:31,933 INFO L82 PathProgramCache]: Analyzing trace with hash 511970, now seen corresponding path program 1 times [2021-10-13 19:50:31,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:31,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029364882] [2021-10-13 19:50:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:31,935 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:31,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:31,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:31,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 19:50:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:32,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:50:32,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:32,311 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-13 19:50:32,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 75 [2021-10-13 19:50:32,323 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 77 treesize of output 75 [2021-10-13 19:50:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:32,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:32,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:32,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029364882] [2021-10-13 19:50:32,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029364882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:32,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:32,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:32,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523225082] [2021-10-13 19:50:32,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:32,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:32,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:32,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:32,665 INFO L87 Difference]: Start difference. First operand 170 states and 656 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:32,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:32,750 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-13 19:50:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 19:50:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:32,757 INFO L225 Difference]: With dead ends: 160 [2021-10-13 19:50:32,757 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 19:50:32,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 19:50:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-13 19:50:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 4.1610738255033555) internal successors, (620), 159 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:32,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-13 19:50:32,785 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-13 19:50:32,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:32,786 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-13 19:50:32,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-13 19:50:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:50:32,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:32,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:50:32,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:33,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:33,004 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash 492012408, now seen corresponding path program 1 times [2021-10-13 19:50:33,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:33,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671845103] [2021-10-13 19:50:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:33,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:33,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:33,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 19:50:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:33,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:50:33,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:33,135 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 19:50:33,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 47 [2021-10-13 19:50:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:33,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:33,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:33,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671845103] [2021-10-13 19:50:33,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671845103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:33,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:33,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:33,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825944211] [2021-10-13 19:50:33,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:33,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:33,504 INFO L87 Difference]: Start difference. First operand 160 states and 620 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:33,559 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-13 19:50:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:50:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:33,563 INFO L225 Difference]: With dead ends: 152 [2021-10-13 19:50:33,563 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 19:50:33,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 19:50:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-13 19:50:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 4.1678321678321675) internal successors, (596), 151 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-13 19:50:33,575 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-13 19:50:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:33,575 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-13 19:50:33,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-13 19:50:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:50:33,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:33,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:50:33,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 19:50:33,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:33,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:33,790 INFO L82 PathProgramCache]: Analyzing trace with hash 492012410, now seen corresponding path program 1 times [2021-10-13 19:50:33,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:33,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855506853] [2021-10-13 19:50:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:33,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:33,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:33,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 19:50:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:33,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:50:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:34,100 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-13 19:50:34,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 76 [2021-10-13 19:50:34,111 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 79 treesize of output 77 [2021-10-13 19:50:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:34,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:34,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:34,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855506853] [2021-10-13 19:50:34,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855506853] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:34,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:34,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:34,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322848169] [2021-10-13 19:50:34,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:34,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:34,689 INFO L87 Difference]: Start difference. First operand 152 states and 596 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:34,758 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-13 19:50:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:34,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:50:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:34,763 INFO L225 Difference]: With dead ends: 144 [2021-10-13 19:50:34,763 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 19:50:34,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 19:50:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-13 19:50:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 4.175182481751825) internal successors, (572), 143 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-13 19:50:34,772 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-13 19:50:34,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:34,772 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-13 19:50:34,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-13 19:50:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:50:34,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:34,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:34,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 19:50:34,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:34,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash 377533841, now seen corresponding path program 1 times [2021-10-13 19:50:34,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:34,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283668252] [2021-10-13 19:50:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:34,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:34,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:35,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:35,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 19:50:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:35,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:50:35,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:35,335 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-13 19:50:35,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-13 19:50:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:35,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:35,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:35,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283668252] [2021-10-13 19:50:35,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283668252] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:35,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:35,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:35,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913010436] [2021-10-13 19:50:35,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:35,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:35,562 INFO L87 Difference]: Start difference. First operand 144 states and 572 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:35,604 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-13 19:50:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:35,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:50:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:35,607 INFO L225 Difference]: With dead ends: 134 [2021-10-13 19:50:35,607 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 19:50:35,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 19:50:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-13 19:50:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 4.155038759689923) internal successors, (536), 133 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-13 19:50:35,615 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-13 19:50:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:35,616 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-13 19:50:35,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-13 19:50:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:50:35,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:35,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:35,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:35,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:35,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:35,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:35,833 INFO L82 PathProgramCache]: Analyzing trace with hash 377533843, now seen corresponding path program 1 times [2021-10-13 19:50:35,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:35,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936252011] [2021-10-13 19:50:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:35,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:35,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:35,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 19:50:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:35,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 19:50:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:36,014 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 19:50:36,015 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-13 19:50:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:36,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:36,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:36,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936252011] [2021-10-13 19:50:36,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936252011] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:36,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:36,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 19:50:36,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317436662] [2021-10-13 19:50:36,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:50:36,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:50:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:36,079 INFO L87 Difference]: Start difference. First operand 134 states and 536 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:36,110 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-13 19:50:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:36,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:50:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:36,113 INFO L225 Difference]: With dead ends: 124 [2021-10-13 19:50:36,113 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 19:50:36,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 19:50:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-13 19:50:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 4.132231404958677) internal successors, (500), 123 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-13 19:50:36,121 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-13 19:50:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:36,121 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-13 19:50:36,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-13 19:50:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:50:36,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:36,122 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:36,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:36,335 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2032780505, now seen corresponding path program 1 times [2021-10-13 19:50:36,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:36,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041504729] [2021-10-13 19:50:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:36,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:36,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:36,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:36,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 19:50:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:36,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:50:36,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:36,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:36,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:36,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041504729] [2021-10-13 19:50:36,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041504729] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:36,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:36,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 19:50:36,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33473345] [2021-10-13 19:50:36,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:50:36,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:36,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:50:36,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:36,703 INFO L87 Difference]: Start difference. First operand 124 states and 500 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:36,740 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-13 19:50:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:36,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 19:50:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:36,743 INFO L225 Difference]: With dead ends: 108 [2021-10-13 19:50:36,743 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 19:50:36,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 19:50:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-13 19:50:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 3.9622641509433962) internal successors, (420), 107 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-13 19:50:36,750 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-13 19:50:36,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:36,751 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-13 19:50:36,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-13 19:50:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:50:36,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:36,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:36,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:36,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:36,954 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2032780506, now seen corresponding path program 1 times [2021-10-13 19:50:36,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:36,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126308786] [2021-10-13 19:50:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:36,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:36,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:36,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:36,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 19:50:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:37,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:50:37,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:37,125 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 19:50:37,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 39 [2021-10-13 19:50:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:37,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:37,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:37,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126308786] [2021-10-13 19:50:37,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126308786] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:37,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:37,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 19:50:37,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810103759] [2021-10-13 19:50:37,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:37,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:37,434 INFO L87 Difference]: Start difference. First operand 108 states and 420 transitions. Second operand has 6 states, 5 states have (on average 3.6) 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) [2021-10-13 19:50:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:37,486 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-13 19:50:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) 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 9 [2021-10-13 19:50:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:37,489 INFO L225 Difference]: With dead ends: 92 [2021-10-13 19:50:37,489 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 19:50:37,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 19:50:37,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-13 19:50:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 3.7362637362637363) internal successors, (340), 91 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-13 19:50:37,495 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-13 19:50:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:37,495 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-13 19:50:37,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) 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) [2021-10-13 19:50:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-13 19:50:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:50:37,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:37,497 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:37,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:37,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:37,698 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash 2012931474, now seen corresponding path program 1 times [2021-10-13 19:50:37,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:37,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789010619] [2021-10-13 19:50:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:37,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:37,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:37,702 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:37,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 19:50:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:37,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:50:37,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:38,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:38,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:38,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789010619] [2021-10-13 19:50:38,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789010619] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:38,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:38,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:38,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60795682] [2021-10-13 19:50:38,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:38,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:38,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:38,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:38,330 INFO L87 Difference]: Start difference. First operand 92 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:38,363 INFO L93 Difference]: Finished difference Result 181 states and 677 transitions. [2021-10-13 19:50:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:38,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:50:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:38,366 INFO L225 Difference]: With dead ends: 181 [2021-10-13 19:50:38,366 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 19:50:38,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 19:50:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-13 19:50:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 3.7953216374269005) internal successors, (649), 171 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 649 transitions. [2021-10-13 19:50:38,376 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 649 transitions. Word has length 21 [2021-10-13 19:50:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:38,377 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 649 transitions. [2021-10-13 19:50:38,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 649 transitions. [2021-10-13 19:50:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:38,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:38,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:38,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:38,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:38,592 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash -522763958, now seen corresponding path program 1 times [2021-10-13 19:50:38,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:38,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637467740] [2021-10-13 19:50:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:38,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:38,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:38,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:38,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 19:50:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:38,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:50:38,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:38,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:39,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:39,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637467740] [2021-10-13 19:50:39,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637467740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:39,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:39,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 19:50:39,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029550667] [2021-10-13 19:50:39,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:39,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:39,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:39,003 INFO L87 Difference]: Start difference. First operand 172 states and 649 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:39,399 INFO L93 Difference]: Finished difference Result 602 states and 2219 transitions. [2021-10-13 19:50:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:50:39,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:39,407 INFO L225 Difference]: With dead ends: 602 [2021-10-13 19:50:39,407 INFO L226 Difference]: Without dead ends: 602 [2021-10-13 19:50:39,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 164.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:50:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-13 19:50:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 260. [2021-10-13 19:50:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 4.308880308880309) internal successors, (1116), 259 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 1116 transitions. [2021-10-13 19:50:39,429 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 1116 transitions. Word has length 22 [2021-10-13 19:50:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:39,430 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 1116 transitions. [2021-10-13 19:50:39,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 1116 transitions. [2021-10-13 19:50:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:39,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:39,433 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:39,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:39,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:39,648 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2023593266, now seen corresponding path program 1 times [2021-10-13 19:50:39,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:39,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839103730] [2021-10-13 19:50:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:39,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:39,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:39,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:39,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 19:50:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:39,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:50:39,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:39,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:40,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:40,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839103730] [2021-10-13 19:50:40,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839103730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:40,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:40,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 19:50:40,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364562942] [2021-10-13 19:50:40,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:40,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:40,074 INFO L87 Difference]: Start difference. First operand 260 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:40,270 INFO L93 Difference]: Finished difference Result 466 states and 1906 transitions. [2021-10-13 19:50:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:50:40,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:40,276 INFO L225 Difference]: With dead ends: 466 [2021-10-13 19:50:40,276 INFO L226 Difference]: Without dead ends: 450 [2021-10-13 19:50:40,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-13 19:50:40,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 350. [2021-10-13 19:50:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 4.432664756446991) internal successors, (1547), 349 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1547 transitions. [2021-10-13 19:50:40,295 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1547 transitions. Word has length 22 [2021-10-13 19:50:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:40,295 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1547 transitions. [2021-10-13 19:50:40,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1547 transitions. [2021-10-13 19:50:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:40,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:40,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:40,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:40,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:40,511 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:40,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1348611576, now seen corresponding path program 1 times [2021-10-13 19:50:40,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:40,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92167555] [2021-10-13 19:50:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:40,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:40,515 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:40,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 19:50:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:40,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:50:40,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:40,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:41,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:41,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92167555] [2021-10-13 19:50:41,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92167555] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:41,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:41,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 19:50:41,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517581492] [2021-10-13 19:50:41,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:41,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:41,171 INFO L87 Difference]: Start difference. First operand 350 states and 1547 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:41,508 INFO L93 Difference]: Finished difference Result 836 states and 3675 transitions. [2021-10-13 19:50:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:50:41,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:41,518 INFO L225 Difference]: With dead ends: 836 [2021-10-13 19:50:41,519 INFO L226 Difference]: Without dead ends: 836 [2021-10-13 19:50:41,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 162.0ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:50:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-10-13 19:50:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 512. [2021-10-13 19:50:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 4.843444227005871) internal successors, (2475), 511 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 2475 transitions. [2021-10-13 19:50:41,553 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 2475 transitions. Word has length 22 [2021-10-13 19:50:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:41,553 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 2475 transitions. [2021-10-13 19:50:41,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 2475 transitions. [2021-10-13 19:50:41,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:41,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:41,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:41,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:41,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:41,769 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:41,770 INFO L82 PathProgramCache]: Analyzing trace with hash 424238018, now seen corresponding path program 2 times [2021-10-13 19:50:41,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:41,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091813638] [2021-10-13 19:50:41,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:41,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:41,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:41,773 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:41,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 19:50:41,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:41,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:42,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:50:42,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:42,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:42,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:42,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091813638] [2021-10-13 19:50:42,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091813638] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:42,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:42,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-13 19:50:42,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31173313] [2021-10-13 19:50:42,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:42,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:42,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:42,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:42,300 INFO L87 Difference]: Start difference. First operand 512 states and 2475 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:42,459 INFO L93 Difference]: Finished difference Result 626 states and 2978 transitions. [2021-10-13 19:50:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:50:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:42,469 INFO L225 Difference]: With dead ends: 626 [2021-10-13 19:50:42,469 INFO L226 Difference]: Without dead ends: 626 [2021-10-13 19:50:42,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-10-13 19:50:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 568. [2021-10-13 19:50:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 4.837742504409171) internal successors, (2743), 567 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 2743 transitions. [2021-10-13 19:50:42,505 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 2743 transitions. Word has length 22 [2021-10-13 19:50:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:42,505 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 2743 transitions. [2021-10-13 19:50:42,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:42,505 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 2743 transitions. [2021-10-13 19:50:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:42,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:42,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:42,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:42,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:42,723 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:42,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1843557643, now seen corresponding path program 1 times [2021-10-13 19:50:42,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:42,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352519513] [2021-10-13 19:50:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:42,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:42,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:42,725 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:42,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 19:50:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:42,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:50:42,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:43,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:43,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:43,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352519513] [2021-10-13 19:50:43,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352519513] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:43,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:43,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 19:50:43,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546852759] [2021-10-13 19:50:43,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:43,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:43,079 INFO L87 Difference]: Start difference. First operand 568 states and 2743 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2021-10-13 19:50:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:43,281 INFO L93 Difference]: Finished difference Result 886 states and 3791 transitions. [2021-10-13 19:50:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:50:43,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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 22 [2021-10-13 19:50:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:43,291 INFO L225 Difference]: With dead ends: 886 [2021-10-13 19:50:43,291 INFO L226 Difference]: Without dead ends: 864 [2021-10-13 19:50:43,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-10-13 19:50:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 638. [2021-10-13 19:50:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 4.6970172684458396) internal successors, (2992), 637 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2992 transitions. [2021-10-13 19:50:43,330 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2992 transitions. Word has length 22 [2021-10-13 19:50:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:43,331 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2992 transitions. [2021-10-13 19:50:43,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2021-10-13 19:50:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2992 transitions. [2021-10-13 19:50:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:43,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:43,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:43,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 19:50:43,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:43,547 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:43,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2112988665, now seen corresponding path program 2 times [2021-10-13 19:50:43,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:43,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729796571] [2021-10-13 19:50:43,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:43,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:43,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:43,551 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:43,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 19:50:43,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:43,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:43,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:50:43,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:43,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:44,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:44,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729796571] [2021-10-13 19:50:44,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729796571] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:44,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:44,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 19:50:44,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534479039] [2021-10-13 19:50:44,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:44,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:44,055 INFO L87 Difference]: Start difference. First operand 638 states and 2992 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:44,450 INFO L93 Difference]: Finished difference Result 1628 states and 6984 transitions. [2021-10-13 19:50:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:50:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:44,469 INFO L225 Difference]: With dead ends: 1628 [2021-10-13 19:50:44,469 INFO L226 Difference]: Without dead ends: 1628 [2021-10-13 19:50:44,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 166.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:50:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-10-13 19:50:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 838. [2021-10-13 19:50:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 4.9127837514934285) internal successors, (4112), 837 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 4112 transitions. [2021-10-13 19:50:44,523 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 4112 transitions. Word has length 22 [2021-10-13 19:50:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:44,523 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 4112 transitions. [2021-10-13 19:50:44,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 4112 transitions. [2021-10-13 19:50:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:44,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:44,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:44,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:44,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:44,741 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:44,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1154262589, now seen corresponding path program 1 times [2021-10-13 19:50:44,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:44,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291548543] [2021-10-13 19:50:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:44,743 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:44,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:44,744 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:44,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 19:50:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:44,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:44,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:45,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:45,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:45,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291548543] [2021-10-13 19:50:45,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291548543] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:45,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:45,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:45,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94983612] [2021-10-13 19:50:45,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:45,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:45,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:45,732 INFO L87 Difference]: Start difference. First operand 838 states and 4112 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:45,979 INFO L93 Difference]: Finished difference Result 1132 states and 5091 transitions. [2021-10-13 19:50:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:50:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:45,991 INFO L225 Difference]: With dead ends: 1132 [2021-10-13 19:50:45,991 INFO L226 Difference]: Without dead ends: 1082 [2021-10-13 19:50:45,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-10-13 19:50:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 932. [2021-10-13 19:50:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 4.868958109559613) internal successors, (4533), 931 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 4533 transitions. [2021-10-13 19:50:46,040 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 4533 transitions. Word has length 23 [2021-10-13 19:50:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:46,040 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 4533 transitions. [2021-10-13 19:50:46,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 4533 transitions. [2021-10-13 19:50:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:46,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:46,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:46,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:46,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:46,258 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1142673624, now seen corresponding path program 1 times [2021-10-13 19:50:46,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:46,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922265171] [2021-10-13 19:50:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:46,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:46,262 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:46,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 19:50:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:46,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:46,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:46,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:47,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:47,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922265171] [2021-10-13 19:50:47,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922265171] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:47,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:47,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:47,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367626917] [2021-10-13 19:50:47,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:47,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:47,174 INFO L87 Difference]: Start difference. First operand 932 states and 4533 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:47,469 INFO L93 Difference]: Finished difference Result 1172 states and 5319 transitions. [2021-10-13 19:50:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:50:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:47,482 INFO L225 Difference]: With dead ends: 1172 [2021-10-13 19:50:47,483 INFO L226 Difference]: Without dead ends: 1142 [2021-10-13 19:50:47,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-10-13 19:50:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1036. [2021-10-13 19:50:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 4.786473429951691) internal successors, (4954), 1035 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 4954 transitions. [2021-10-13 19:50:47,553 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 4954 transitions. Word has length 23 [2021-10-13 19:50:47,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:47,554 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 4954 transitions. [2021-10-13 19:50:47,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 4954 transitions. [2021-10-13 19:50:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:47,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:47,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:47,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:47,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:47,768 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:47,769 INFO L82 PathProgramCache]: Analyzing trace with hash -795704876, now seen corresponding path program 2 times [2021-10-13 19:50:47,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:47,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004866284] [2021-10-13 19:50:47,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:47,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:47,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:47,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:47,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 19:50:48,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:48,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:48,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:48,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:48,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:48,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:48,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004866284] [2021-10-13 19:50:48,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004866284] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:48,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:48,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:48,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109253037] [2021-10-13 19:50:48,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:48,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:48,734 INFO L87 Difference]: Start difference. First operand 1036 states and 4954 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:48,993 INFO L93 Difference]: Finished difference Result 1248 states and 5710 transitions. [2021-10-13 19:50:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:50:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:49,007 INFO L225 Difference]: With dead ends: 1248 [2021-10-13 19:50:49,008 INFO L226 Difference]: Without dead ends: 1218 [2021-10-13 19:50:49,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-13 19:50:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1106. [2021-10-13 19:50:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 4.769230769230769) internal successors, (5270), 1105 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 5270 transitions. [2021-10-13 19:50:49,081 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 5270 transitions. Word has length 23 [2021-10-13 19:50:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:49,081 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 5270 transitions. [2021-10-13 19:50:49,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 5270 transitions. [2021-10-13 19:50:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:49,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:49,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:49,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:49,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:49,302 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:49,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1003497093, now seen corresponding path program 2 times [2021-10-13 19:50:49,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:49,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783869225] [2021-10-13 19:50:49,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:49,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:49,305 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:49,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 19:50:49,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:49,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:49,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:49,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:50,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:50,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:50,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783869225] [2021-10-13 19:50:50,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783869225] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:50,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:50,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:50,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219630068] [2021-10-13 19:50:50,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:50,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:50,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:50,429 INFO L87 Difference]: Start difference. First operand 1106 states and 5270 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:50,823 INFO L93 Difference]: Finished difference Result 1382 states and 6191 transitions. [2021-10-13 19:50:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:50,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:50:50,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:50,864 INFO L225 Difference]: With dead ends: 1382 [2021-10-13 19:50:50,865 INFO L226 Difference]: Without dead ends: 1332 [2021-10-13 19:50:50,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-13 19:50:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1168. [2021-10-13 19:50:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 4.758354755784062) internal successors, (5553), 1167 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 5553 transitions. [2021-10-13 19:50:50,940 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 5553 transitions. Word has length 23 [2021-10-13 19:50:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:50,940 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 5553 transitions. [2021-10-13 19:50:50,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 5553 transitions. [2021-10-13 19:50:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:50:50,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:50,946 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:50,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:51,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:51,162 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:51,163 INFO L82 PathProgramCache]: Analyzing trace with hash -402590731, now seen corresponding path program 3 times [2021-10-13 19:50:51,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:51,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405901478] [2021-10-13 19:50:51,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:50:51,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:51,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:51,166 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:51,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 19:50:51,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:50:51,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:51,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:50:51,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:51,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:52,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:52,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405901478] [2021-10-13 19:50:52,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405901478] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:52,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:52,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-13 19:50:52,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847792433] [2021-10-13 19:50:52,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:50:52,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:50:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:50:52,017 INFO L87 Difference]: Start difference. First operand 1168 states and 5553 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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) [2021-10-13 19:50:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:53,900 INFO L93 Difference]: Finished difference Result 2802 states and 12099 transitions. [2021-10-13 19:50:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:50:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 24 [2021-10-13 19:50:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:53,918 INFO L225 Difference]: With dead ends: 2802 [2021-10-13 19:50:53,918 INFO L226 Difference]: Without dead ends: 2802 [2021-10-13 19:50:53,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 604.5ms TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:50:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-10-13 19:50:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1478. [2021-10-13 19:50:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 4.901150981719702) internal successors, (7239), 1477 states have internal predecessors, (7239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 7239 transitions. [2021-10-13 19:50:54,035 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 7239 transitions. Word has length 24 [2021-10-13 19:50:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:54,036 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 7239 transitions. [2021-10-13 19:50:54,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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) [2021-10-13 19:50:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 7239 transitions. [2021-10-13 19:50:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:50:54,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:54,044 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:54,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:54,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:54,258 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:54,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:54,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1602477994, now seen corresponding path program 4 times [2021-10-13 19:50:54,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:54,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510400470] [2021-10-13 19:50:54,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:50:54,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:54,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:54,261 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:54,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 19:50:54,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:50:54,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:54,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:50:54,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:54,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:54,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:54,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510400470] [2021-10-13 19:50:54,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510400470] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:54,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:54,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:50:54,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22064270] [2021-10-13 19:50:54,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:50:54,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:50:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:50:54,915 INFO L87 Difference]: Start difference. First operand 1478 states and 7239 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:11,851 INFO L93 Difference]: Finished difference Result 2478 states and 10686 transitions. [2021-10-13 19:51:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:51:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 24 [2021-10-13 19:51:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:11,864 INFO L225 Difference]: With dead ends: 2478 [2021-10-13 19:51:11,865 INFO L226 Difference]: Without dead ends: 2422 [2021-10-13 19:51:11,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 428.9ms TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:51:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-10-13 19:51:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1550. [2021-10-13 19:51:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 4.8521626856036155) internal successors, (7516), 1549 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 7516 transitions. [2021-10-13 19:51:11,934 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 7516 transitions. Word has length 24 [2021-10-13 19:51:11,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:11,934 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 7516 transitions. [2021-10-13 19:51:11,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 7516 transitions. [2021-10-13 19:51:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:11,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:11,943 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:11,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:12,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:12,144 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:12,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2147312977, now seen corresponding path program 5 times [2021-10-13 19:51:12,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:12,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448396888] [2021-10-13 19:51:12,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:51:12,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:12,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:12,148 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:12,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 19:51:12,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:51:12,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:12,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:51:12,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:12,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:12,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:12,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448396888] [2021-10-13 19:51:12,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448396888] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:12,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:12,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:51:12,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428982783] [2021-10-13 19:51:12,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:51:12,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:51:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:51:12,854 INFO L87 Difference]: Start difference. First operand 1550 states and 7516 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:16,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:16,348 INFO L93 Difference]: Finished difference Result 3074 states and 13128 transitions. [2021-10-13 19:51:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:51:16,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 24 [2021-10-13 19:51:16,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:16,368 INFO L225 Difference]: With dead ends: 3074 [2021-10-13 19:51:16,368 INFO L226 Difference]: Without dead ends: 3074 [2021-10-13 19:51:16,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 447.4ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:51:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2021-10-13 19:51:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 1520. [2021-10-13 19:51:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 4.80513495720869) internal successors, (7299), 1519 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 7299 transitions. [2021-10-13 19:51:16,461 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 7299 transitions. Word has length 24 [2021-10-13 19:51:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:16,461 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 7299 transitions. [2021-10-13 19:51:16,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 7299 transitions. [2021-10-13 19:51:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:16,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:16,472 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:16,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:16,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:16,686 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:16,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1920792276, now seen corresponding path program 6 times [2021-10-13 19:51:16,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:16,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552889935] [2021-10-13 19:51:16,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:51:16,687 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:16,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:16,688 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:16,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 19:51:17,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 19:51:17,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:17,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:51:17,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:17,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:17,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:17,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552889935] [2021-10-13 19:51:17,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552889935] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:17,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:17,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:51:17,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850870188] [2021-10-13 19:51:17,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:51:17,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:51:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:51:17,372 INFO L87 Difference]: Start difference. First operand 1520 states and 7299 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:18,212 INFO L93 Difference]: Finished difference Result 2298 states and 9980 transitions. [2021-10-13 19:51:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:51:18,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 24 [2021-10-13 19:51:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:18,227 INFO L225 Difference]: With dead ends: 2298 [2021-10-13 19:51:18,228 INFO L226 Difference]: Without dead ends: 2262 [2021-10-13 19:51:18,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 250.1ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:51:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-10-13 19:51:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1534. [2021-10-13 19:51:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 4.782126549249837) internal successors, (7331), 1533 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 7331 transitions. [2021-10-13 19:51:18,330 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 7331 transitions. Word has length 24 [2021-10-13 19:51:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:18,331 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 7331 transitions. [2021-10-13 19:51:18,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 7331 transitions. [2021-10-13 19:51:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:18,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:18,339 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:18,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:18,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:18,554 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1029502268, now seen corresponding path program 7 times [2021-10-13 19:51:18,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:18,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88143310] [2021-10-13 19:51:18,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:51:18,557 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:18,558 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:18,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 19:51:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:51:18,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:51:18,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:19,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:19,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:19,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88143310] [2021-10-13 19:51:19,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88143310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:19,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:19,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:51:19,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840359439] [2021-10-13 19:51:19,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:51:19,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:51:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:51:19,205 INFO L87 Difference]: Start difference. First operand 1534 states and 7331 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:19,823 INFO L93 Difference]: Finished difference Result 2196 states and 9763 transitions. [2021-10-13 19:51:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:51:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 24 [2021-10-13 19:51:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:19,835 INFO L225 Difference]: With dead ends: 2196 [2021-10-13 19:51:19,835 INFO L226 Difference]: Without dead ends: 2196 [2021-10-13 19:51:19,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.6ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:51:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-10-13 19:51:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1534. [2021-10-13 19:51:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 4.782126549249837) internal successors, (7331), 1533 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 7331 transitions. [2021-10-13 19:51:19,912 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 7331 transitions. Word has length 24 [2021-10-13 19:51:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:19,912 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 7331 transitions. [2021-10-13 19:51:19,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 7331 transitions. [2021-10-13 19:51:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:19,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:19,919 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:19,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-13 19:51:20,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:20,132 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:20,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:20,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1063103496, now seen corresponding path program 3 times [2021-10-13 19:51:20,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:20,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582828072] [2021-10-13 19:51:20,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:51:20,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:20,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:20,135 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:20,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 19:51:20,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:51:20,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:20,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:20,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:20,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:21,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:21,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582828072] [2021-10-13 19:51:21,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582828072] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:21,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:21,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:21,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426104668] [2021-10-13 19:51:21,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:21,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:21,292 INFO L87 Difference]: Start difference. First operand 1534 states and 7331 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:22,841 INFO L93 Difference]: Finished difference Result 3096 states and 13635 transitions. [2021-10-13 19:51:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:51:22,843 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:22,860 INFO L225 Difference]: With dead ends: 3096 [2021-10-13 19:51:22,860 INFO L226 Difference]: Without dead ends: 3062 [2021-10-13 19:51:22,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 780.4ms TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:51:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-10-13 19:51:22,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2220. [2021-10-13 19:51:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2219 states have (on average 4.733213159080667) internal successors, (10503), 2219 states have internal predecessors, (10503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 10503 transitions. [2021-10-13 19:51:22,970 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 10503 transitions. Word has length 24 [2021-10-13 19:51:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:22,971 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 10503 transitions. [2021-10-13 19:51:22,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 10503 transitions. [2021-10-13 19:51:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:22,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:22,982 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:22,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:23,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:23,197 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2108118788, now seen corresponding path program 4 times [2021-10-13 19:51:23,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:23,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487045418] [2021-10-13 19:51:23,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:51:23,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:23,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:23,200 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:23,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 19:51:23,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:51:23,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:23,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:23,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:23,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:24,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:24,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487045418] [2021-10-13 19:51:24,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487045418] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:24,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:24,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:24,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817204889] [2021-10-13 19:51:24,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:24,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:24,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:24,369 INFO L87 Difference]: Start difference. First operand 2220 states and 10503 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:25,929 INFO L93 Difference]: Finished difference Result 3706 states and 16712 transitions. [2021-10-13 19:51:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:51:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:25,946 INFO L225 Difference]: With dead ends: 3706 [2021-10-13 19:51:25,947 INFO L226 Difference]: Without dead ends: 3680 [2021-10-13 19:51:25,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 792.8ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:51:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2021-10-13 19:51:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 2448. [2021-10-13 19:51:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2447 states have (on average 4.822639967306906) internal successors, (11801), 2447 states have internal predecessors, (11801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 11801 transitions. [2021-10-13 19:51:26,100 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 11801 transitions. Word has length 24 [2021-10-13 19:51:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 11801 transitions. [2021-10-13 19:51:26,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 11801 transitions. [2021-10-13 19:51:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:26,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:26,111 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:26,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:26,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:26,325 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:26,326 INFO L82 PathProgramCache]: Analyzing trace with hash 917748386, now seen corresponding path program 5 times [2021-10-13 19:51:26,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:26,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92543527] [2021-10-13 19:51:26,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:51:26,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:26,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:26,329 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:26,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 19:51:26,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:51:26,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:26,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:26,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:26,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:27,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:27,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92543527] [2021-10-13 19:51:27,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92543527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:27,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:27,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:27,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892738095] [2021-10-13 19:51:27,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:27,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:27,527 INFO L87 Difference]: Start difference. First operand 2448 states and 11801 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:29,151 INFO L93 Difference]: Finished difference Result 5806 states and 26536 transitions. [2021-10-13 19:51:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:51:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:29,173 INFO L225 Difference]: With dead ends: 5806 [2021-10-13 19:51:29,173 INFO L226 Difference]: Without dead ends: 5806 [2021-10-13 19:51:29,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 785.5ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:51:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2021-10-13 19:51:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 2940. [2021-10-13 19:51:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2939 states have (on average 5.08506294658047) internal successors, (14945), 2939 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 14945 transitions. [2021-10-13 19:51:29,363 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 14945 transitions. Word has length 24 [2021-10-13 19:51:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:29,364 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 14945 transitions. [2021-10-13 19:51:29,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 14945 transitions. [2021-10-13 19:51:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:29,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:29,377 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:29,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:29,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:29,591 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:29,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1102993100, now seen corresponding path program 6 times [2021-10-13 19:51:29,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:29,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282685953] [2021-10-13 19:51:29,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:51:29,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:29,595 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:29,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 19:51:30,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:51:30,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:30,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:51:30,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:30,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:30,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:30,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282685953] [2021-10-13 19:51:30,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282685953] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:30,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:30,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:30,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692869760] [2021-10-13 19:51:30,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:30,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:30,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:30,635 INFO L87 Difference]: Start difference. First operand 2940 states and 14945 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:31,892 INFO L93 Difference]: Finished difference Result 4442 states and 21137 transitions. [2021-10-13 19:51:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:51:31,893 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:31,909 INFO L225 Difference]: With dead ends: 4442 [2021-10-13 19:51:31,909 INFO L226 Difference]: Without dead ends: 4392 [2021-10-13 19:51:31,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 439.5ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:51:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-10-13 19:51:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3270. [2021-10-13 19:51:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3269 states have (on average 5.167635362496176) internal successors, (16893), 3269 states have internal predecessors, (16893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 16893 transitions. [2021-10-13 19:51:32,073 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 16893 transitions. Word has length 24 [2021-10-13 19:51:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:32,073 INFO L470 AbstractCegarLoop]: Abstraction has 3270 states and 16893 transitions. [2021-10-13 19:51:32,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 16893 transitions. [2021-10-13 19:51:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:32,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:32,089 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:32,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:32,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:32,303 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:32,303 INFO L82 PathProgramCache]: Analyzing trace with hash -166107022, now seen corresponding path program 7 times [2021-10-13 19:51:32,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:32,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443013278] [2021-10-13 19:51:32,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:51:32,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:32,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:32,306 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:32,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 19:51:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:51:32,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:32,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:32,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:33,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:33,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443013278] [2021-10-13 19:51:33,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443013278] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:33,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:33,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:33,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749115432] [2021-10-13 19:51:33,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:33,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:33,519 INFO L87 Difference]: Start difference. First operand 3270 states and 16893 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:35,155 INFO L93 Difference]: Finished difference Result 6404 states and 30246 transitions. [2021-10-13 19:51:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:51:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:35,180 INFO L225 Difference]: With dead ends: 6404 [2021-10-13 19:51:35,180 INFO L226 Difference]: Without dead ends: 6404 [2021-10-13 19:51:35,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 732.2ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:51:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2021-10-13 19:51:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3514. [2021-10-13 19:51:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3513 states have (on average 5.195844007970396) internal successors, (18253), 3513 states have internal predecessors, (18253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 18253 transitions. [2021-10-13 19:51:35,380 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 18253 transitions. Word has length 24 [2021-10-13 19:51:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:35,380 INFO L470 AbstractCegarLoop]: Abstraction has 3514 states and 18253 transitions. [2021-10-13 19:51:35,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 18253 transitions. [2021-10-13 19:51:35,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:35,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:35,398 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:35,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:35,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:35,612 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash 781369762, now seen corresponding path program 8 times [2021-10-13 19:51:35,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:35,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865921765] [2021-10-13 19:51:35,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:51:35,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:35,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:35,614 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:35,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 19:51:36,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:51:36,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:36,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:36,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:36,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:37,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:37,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865921765] [2021-10-13 19:51:37,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865921765] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:37,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:37,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:37,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982200403] [2021-10-13 19:51:37,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:37,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:37,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:37,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:37,027 INFO L87 Difference]: Start difference. First operand 3514 states and 18253 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:38,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:38,629 INFO L93 Difference]: Finished difference Result 6048 states and 29472 transitions. [2021-10-13 19:51:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:51:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:38,651 INFO L225 Difference]: With dead ends: 6048 [2021-10-13 19:51:38,651 INFO L226 Difference]: Without dead ends: 6048 [2021-10-13 19:51:38,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 835.5ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:51:38,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2021-10-13 19:51:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 4060. [2021-10-13 19:51:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4060 states, 4059 states have (on average 5.329884207932988) internal successors, (21634), 4059 states have internal predecessors, (21634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 21634 transitions. [2021-10-13 19:51:38,931 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 21634 transitions. Word has length 24 [2021-10-13 19:51:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:38,932 INFO L470 AbstractCegarLoop]: Abstraction has 4060 states and 21634 transitions. [2021-10-13 19:51:38,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 21634 transitions. [2021-10-13 19:51:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:38,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:38,950 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:38,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:39,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:39,164 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1049738101, now seen corresponding path program 8 times [2021-10-13 19:51:39,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:39,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495483271] [2021-10-13 19:51:39,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:51:39,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:39,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:39,168 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:39,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 19:51:39,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:51:39,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:39,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:51:39,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:39,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:40,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:40,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495483271] [2021-10-13 19:51:40,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495483271] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:40,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:40,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:51:40,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824611877] [2021-10-13 19:51:40,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:51:40,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:51:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:51:40,047 INFO L87 Difference]: Start difference. First operand 4060 states and 21634 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 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) [2021-10-13 19:51:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:40,594 INFO L93 Difference]: Finished difference Result 8954 states and 43077 transitions. [2021-10-13 19:51:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:51:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 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 24 [2021-10-13 19:51:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:40,664 INFO L225 Difference]: With dead ends: 8954 [2021-10-13 19:51:40,664 INFO L226 Difference]: Without dead ends: 8954 [2021-10-13 19:51:40,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.0ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:51:40,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8954 states. [2021-10-13 19:51:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8954 to 4188. [2021-10-13 19:51:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 5.381896345832338) internal successors, (22534), 4187 states have internal predecessors, (22534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 22534 transitions. [2021-10-13 19:51:40,952 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 22534 transitions. Word has length 24 [2021-10-13 19:51:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:40,952 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 22534 transitions. [2021-10-13 19:51:40,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 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) [2021-10-13 19:51:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 22534 transitions. [2021-10-13 19:51:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:40,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:40,972 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:40,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:41,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:41,187 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash -863562708, now seen corresponding path program 9 times [2021-10-13 19:51:41,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:41,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136120837] [2021-10-13 19:51:41,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:51:41,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:41,191 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:41,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 19:51:41,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:51:41,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:41,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:51:41,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:41,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:42,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:42,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136120837] [2021-10-13 19:51:42,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136120837] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:42,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:42,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:42,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436604974] [2021-10-13 19:51:42,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:42,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:42,191 INFO L87 Difference]: Start difference. First operand 4188 states and 22534 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:48,458 INFO L93 Difference]: Finished difference Result 8348 states and 40130 transitions. [2021-10-13 19:51:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:51:48,459 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:48,506 INFO L225 Difference]: With dead ends: 8348 [2021-10-13 19:51:48,506 INFO L226 Difference]: Without dead ends: 8310 [2021-10-13 19:51:48,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 456.9ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:51:48,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2021-10-13 19:51:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 4518. [2021-10-13 19:51:48,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4517 states have (on average 5.352446313925172) internal successors, (24177), 4517 states have internal predecessors, (24177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 24177 transitions. [2021-10-13 19:51:48,728 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 24177 transitions. Word has length 24 [2021-10-13 19:51:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:48,729 INFO L470 AbstractCegarLoop]: Abstraction has 4518 states and 24177 transitions. [2021-10-13 19:51:48,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 24177 transitions. [2021-10-13 19:51:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:48,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:48,743 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:48,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:48,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:48,945 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:48,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1754852716, now seen corresponding path program 10 times [2021-10-13 19:51:48,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:48,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434065577] [2021-10-13 19:51:48,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:51:48,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:48,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:48,949 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:48,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 19:51:49,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:51:49,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:49,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:51:49,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:49,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:49,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:49,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434065577] [2021-10-13 19:51:49,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434065577] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:49,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:49,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:51:49,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251424627] [2021-10-13 19:51:49,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:51:49,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:51:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:51:49,740 INFO L87 Difference]: Start difference. First operand 4518 states and 24177 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:51,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:51,424 INFO L93 Difference]: Finished difference Result 8298 states and 39903 transitions. [2021-10-13 19:51:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:51:51,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 24 [2021-10-13 19:51:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:51,475 INFO L225 Difference]: With dead ends: 8298 [2021-10-13 19:51:51,475 INFO L226 Difference]: Without dead ends: 8298 [2021-10-13 19:51:51,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 372.7ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:51:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-10-13 19:51:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 4532. [2021-10-13 19:51:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 4531 states have (on average 5.3226660781284485) internal successors, (24117), 4531 states have internal predecessors, (24117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 24117 transitions. [2021-10-13 19:51:51,827 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 24117 transitions. Word has length 24 [2021-10-13 19:51:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:51,828 INFO L470 AbstractCegarLoop]: Abstraction has 4532 states and 24117 transitions. [2021-10-13 19:51:51,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 24117 transitions. [2021-10-13 19:51:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:51,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:51,850 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:51,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:52,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:52,063 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1433454686, now seen corresponding path program 11 times [2021-10-13 19:51:52,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:52,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163029049] [2021-10-13 19:51:52,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:51:52,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:52,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:52,066 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:52,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 19:51:52,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:51:52,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:52,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:51:52,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:52,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:52,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:52,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163029049] [2021-10-13 19:51:52,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163029049] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:52,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:52,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:51:52,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882955654] [2021-10-13 19:51:52,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:51:52,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:51:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:51:52,828 INFO L87 Difference]: Start difference. First operand 4532 states and 24117 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:56,665 INFO L93 Difference]: Finished difference Result 6542 states and 32899 transitions. [2021-10-13 19:51:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:51:56,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 24 [2021-10-13 19:51:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:56,694 INFO L225 Difference]: With dead ends: 6542 [2021-10-13 19:51:56,695 INFO L226 Difference]: Without dead ends: 6542 [2021-10-13 19:51:56,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 343.2ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:51:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-10-13 19:51:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 4768. [2021-10-13 19:51:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4767 states have (on average 5.317809943360604) internal successors, (25350), 4767 states have internal predecessors, (25350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 25350 transitions. [2021-10-13 19:51:56,875 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 25350 transitions. Word has length 24 [2021-10-13 19:51:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:56,875 INFO L470 AbstractCegarLoop]: Abstraction has 4768 states and 25350 transitions. [2021-10-13 19:51:56,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-13 19:51:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 25350 transitions. [2021-10-13 19:51:56,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:51:56,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:56,893 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:56,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-13 19:51:57,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:57,099 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:57,100 INFO L82 PathProgramCache]: Analyzing trace with hash 584665330, now seen corresponding path program 12 times [2021-10-13 19:51:57,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:57,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131960300] [2021-10-13 19:51:57,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:51:57,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:57,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:57,103 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:57,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 19:51:57,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 19:51:57,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:57,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:57,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:58,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:58,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:58,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131960300] [2021-10-13 19:51:58,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131960300] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:58,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:58,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:51:58,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115540439] [2021-10-13 19:51:58,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:51:58,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:51:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:51:58,721 INFO L87 Difference]: Start difference. First operand 4768 states and 25350 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:05,670 INFO L93 Difference]: Finished difference Result 5434 states and 27619 transitions. [2021-10-13 19:52:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:05,690 INFO L225 Difference]: With dead ends: 5434 [2021-10-13 19:52:05,690 INFO L226 Difference]: Without dead ends: 5384 [2021-10-13 19:52:05,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2333.2ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:52:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2021-10-13 19:52:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4882. [2021-10-13 19:52:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4881 states have (on average 5.286416717885679) internal successors, (25803), 4881 states have internal predecessors, (25803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 25803 transitions. [2021-10-13 19:52:05,830 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 25803 transitions. Word has length 25 [2021-10-13 19:52:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:05,831 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 25803 transitions. [2021-10-13 19:52:05,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 25803 transitions. [2021-10-13 19:52:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:05,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:05,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:05,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:06,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:06,049 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:06,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1689751277, now seen corresponding path program 1 times [2021-10-13 19:52:06,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:06,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709962316] [2021-10-13 19:52:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:52:06,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:06,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:06,054 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:06,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 19:52:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:52:06,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:06,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:07,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:07,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:07,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709962316] [2021-10-13 19:52:07,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709962316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:07,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:07,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:07,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612783426] [2021-10-13 19:52:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:07,582 INFO L87 Difference]: Start difference. First operand 4882 states and 25803 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:08,330 INFO L93 Difference]: Finished difference Result 6170 states and 31129 transitions. [2021-10-13 19:52:08,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:08,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:08,351 INFO L225 Difference]: With dead ends: 6170 [2021-10-13 19:52:08,351 INFO L226 Difference]: Without dead ends: 6056 [2021-10-13 19:52:08,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 336.2ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-13 19:52:08,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5252. [2021-10-13 19:52:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5251 states have (on average 5.332317653780232) internal successors, (28000), 5251 states have internal predecessors, (28000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 28000 transitions. [2021-10-13 19:52:08,529 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 28000 transitions. Word has length 25 [2021-10-13 19:52:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:08,530 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 28000 transitions. [2021-10-13 19:52:08,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 28000 transitions. [2021-10-13 19:52:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:08,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:08,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:08,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:08,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:08,774 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:08,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1342782529, now seen corresponding path program 2 times [2021-10-13 19:52:08,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:08,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466125707] [2021-10-13 19:52:08,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:52:08,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:08,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:08,777 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:08,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 19:52:09,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:52:09,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:09,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:09,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:10,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:10,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:10,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466125707] [2021-10-13 19:52:10,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466125707] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:10,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:10,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:10,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327108908] [2021-10-13 19:52:10,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:10,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:10,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:10,433 INFO L87 Difference]: Start difference. First operand 5252 states and 28000 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:11,997 INFO L93 Difference]: Finished difference Result 6416 states and 32779 transitions. [2021-10-13 19:52:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:11,998 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:12,022 INFO L225 Difference]: With dead ends: 6416 [2021-10-13 19:52:12,022 INFO L226 Difference]: Without dead ends: 6316 [2021-10-13 19:52:12,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 312.0ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:12,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6316 states. [2021-10-13 19:52:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6316 to 5450. [2021-10-13 19:52:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5449 states have (on average 5.39438429069554) internal successors, (29394), 5449 states have internal predecessors, (29394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 29394 transitions. [2021-10-13 19:52:12,269 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 29394 transitions. Word has length 25 [2021-10-13 19:52:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:12,269 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 29394 transitions. [2021-10-13 19:52:12,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 29394 transitions. [2021-10-13 19:52:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:12,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:12,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:12,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-13 19:52:12,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:12,508 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash 970109075, now seen corresponding path program 3 times [2021-10-13 19:52:12,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:12,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179861692] [2021-10-13 19:52:12,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:52:12,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:12,512 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:12,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 19:52:13,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:52:13,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:13,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:13,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:13,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:14,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:14,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179861692] [2021-10-13 19:52:14,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179861692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:14,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:14,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:14,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377172411] [2021-10-13 19:52:14,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:14,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:14,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:14,176 INFO L87 Difference]: Start difference. First operand 5450 states and 29394 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:15,034 INFO L93 Difference]: Finished difference Result 7150 states and 36614 transitions. [2021-10-13 19:52:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:52:15,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:15,067 INFO L225 Difference]: With dead ends: 7150 [2021-10-13 19:52:15,067 INFO L226 Difference]: Without dead ends: 7028 [2021-10-13 19:52:15,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 327.8ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2021-10-13 19:52:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 5742. [2021-10-13 19:52:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5741 states have (on average 5.443128374847587) internal successors, (31249), 5741 states have internal predecessors, (31249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 31249 transitions. [2021-10-13 19:52:15,348 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 31249 transitions. Word has length 25 [2021-10-13 19:52:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:15,349 INFO L470 AbstractCegarLoop]: Abstraction has 5742 states and 31249 transitions. [2021-10-13 19:52:15,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 31249 transitions. [2021-10-13 19:52:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:15,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:15,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:15,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:15,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:15,567 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1052582083, now seen corresponding path program 4 times [2021-10-13 19:52:15,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:15,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880408298] [2021-10-13 19:52:15,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:52:15,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:15,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:15,570 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:15,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 19:52:16,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:52:16,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:16,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:16,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:16,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:17,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:17,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880408298] [2021-10-13 19:52:17,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880408298] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:17,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:17,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:17,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682819230] [2021-10-13 19:52:17,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:17,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:17,043 INFO L87 Difference]: Start difference. First operand 5742 states and 31249 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:17,692 INFO L93 Difference]: Finished difference Result 6696 states and 35161 transitions. [2021-10-13 19:52:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:52:17,693 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:17,735 INFO L225 Difference]: With dead ends: 6696 [2021-10-13 19:52:17,735 INFO L226 Difference]: Without dead ends: 6582 [2021-10-13 19:52:17,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 320.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2021-10-13 19:52:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6104. [2021-10-13 19:52:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 5.448631820416189) internal successors, (33253), 6103 states have internal predecessors, (33253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 33253 transitions. [2021-10-13 19:52:18,000 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 33253 transitions. Word has length 25 [2021-10-13 19:52:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:18,001 INFO L470 AbstractCegarLoop]: Abstraction has 6104 states and 33253 transitions. [2021-10-13 19:52:18,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 33253 transitions. [2021-10-13 19:52:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:18,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:18,017 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:18,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:18,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:18,223 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:18,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2043825597, now seen corresponding path program 5 times [2021-10-13 19:52:18,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:18,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916460251] [2021-10-13 19:52:18,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:52:18,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:18,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:18,228 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:18,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 19:52:18,833 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:52:18,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:18,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:18,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:19,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:19,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:19,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916460251] [2021-10-13 19:52:19,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916460251] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:19,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:19,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:19,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961778691] [2021-10-13 19:52:19,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:19,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:19,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:19,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:19,895 INFO L87 Difference]: Start difference. First operand 6104 states and 33253 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:20,401 INFO L93 Difference]: Finished difference Result 7016 states and 36957 transitions. [2021-10-13 19:52:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:52:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:20,429 INFO L225 Difference]: With dead ends: 7016 [2021-10-13 19:52:20,430 INFO L226 Difference]: Without dead ends: 6914 [2021-10-13 19:52:20,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 366.2ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2021-10-13 19:52:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 6336. [2021-10-13 19:52:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6335 states have (on average 5.458405682715075) internal successors, (34579), 6335 states have internal predecessors, (34579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 34579 transitions. [2021-10-13 19:52:20,626 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 34579 transitions. Word has length 25 [2021-10-13 19:52:20,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:20,626 INFO L470 AbstractCegarLoop]: Abstraction has 6336 states and 34579 transitions. [2021-10-13 19:52:20,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:20,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 34579 transitions. [2021-10-13 19:52:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:20,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:20,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:20,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-13 19:52:20,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:20,848 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:20,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1372055443, now seen corresponding path program 6 times [2021-10-13 19:52:20,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:20,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524325469] [2021-10-13 19:52:20,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:52:20,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:20,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:20,851 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:20,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 19:52:21,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 19:52:21,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:21,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:21,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:22,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:22,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:22,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524325469] [2021-10-13 19:52:22,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524325469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:22,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:22,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:22,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41896113] [2021-10-13 19:52:22,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:22,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:22,617 INFO L87 Difference]: Start difference. First operand 6336 states and 34579 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:23,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:23,478 INFO L93 Difference]: Finished difference Result 8110 states and 42023 transitions. [2021-10-13 19:52:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:52:23,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:23,511 INFO L225 Difference]: With dead ends: 8110 [2021-10-13 19:52:23,511 INFO L226 Difference]: Without dead ends: 7996 [2021-10-13 19:52:23,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 321.4ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:23,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2021-10-13 19:52:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 6566. [2021-10-13 19:52:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 6565 states have (on average 5.501751713632902) internal successors, (36119), 6565 states have internal predecessors, (36119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 36119 transitions. [2021-10-13 19:52:23,727 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 36119 transitions. Word has length 25 [2021-10-13 19:52:23,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:23,727 INFO L470 AbstractCegarLoop]: Abstraction has 6566 states and 36119 transitions. [2021-10-13 19:52:23,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 36119 transitions. [2021-10-13 19:52:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:23,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:23,746 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:23,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-13 19:52:23,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:23,947 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:23,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:23,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1843699946, now seen corresponding path program 13 times [2021-10-13 19:52:23,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:23,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320096373] [2021-10-13 19:52:23,949 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:52:23,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:23,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:23,951 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:23,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 19:52:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:52:24,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:24,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:27,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:27,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:27,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320096373] [2021-10-13 19:52:27,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320096373] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:27,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:27,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:27,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890819563] [2021-10-13 19:52:27,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:27,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:27,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:52:27,557 INFO L87 Difference]: Start difference. First operand 6566 states and 36119 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:32,594 INFO L93 Difference]: Finished difference Result 7378 states and 38882 transitions. [2021-10-13 19:52:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:32,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:32,622 INFO L225 Difference]: With dead ends: 7378 [2021-10-13 19:52:32,623 INFO L226 Difference]: Without dead ends: 7328 [2021-10-13 19:52:32,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6311.8ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:52:32,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2021-10-13 19:52:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 6624. [2021-10-13 19:52:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6624 states, 6623 states have (on average 5.50098142835573) internal successors, (36433), 6623 states have internal predecessors, (36433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6624 states to 6624 states and 36433 transitions. [2021-10-13 19:52:32,810 INFO L78 Accepts]: Start accepts. Automaton has 6624 states and 36433 transitions. Word has length 25 [2021-10-13 19:52:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:32,811 INFO L470 AbstractCegarLoop]: Abstraction has 6624 states and 36433 transitions. [2021-10-13 19:52:32,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6624 states and 36433 transitions. [2021-10-13 19:52:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:32,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:32,829 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:32,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-13 19:52:33,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:33,030 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash -607884846, now seen corresponding path program 9 times [2021-10-13 19:52:33,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:33,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395028894] [2021-10-13 19:52:33,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:52:33,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:33,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:33,033 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:33,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 19:52:33,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:52:33,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:33,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:33,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:34,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:34,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:34,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395028894] [2021-10-13 19:52:34,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395028894] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:34,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:34,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:34,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377211023] [2021-10-13 19:52:34,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:34,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:34,538 INFO L87 Difference]: Start difference. First operand 6624 states and 36433 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:35,704 INFO L93 Difference]: Finished difference Result 7216 states and 38494 transitions. [2021-10-13 19:52:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:35,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:35,737 INFO L225 Difference]: With dead ends: 7216 [2021-10-13 19:52:35,737 INFO L226 Difference]: Without dead ends: 7186 [2021-10-13 19:52:35,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 317.0ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:52:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2021-10-13 19:52:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 6816. [2021-10-13 19:52:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6816 states, 6815 states have (on average 5.468085106382978) internal successors, (37265), 6815 states have internal predecessors, (37265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 37265 transitions. [2021-10-13 19:52:36,040 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 37265 transitions. Word has length 25 [2021-10-13 19:52:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:36,041 INFO L470 AbstractCegarLoop]: Abstraction has 6816 states and 37265 transitions. [2021-10-13 19:52:36,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 37265 transitions. [2021-10-13 19:52:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:36,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:36,064 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:36,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-13 19:52:36,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:36,277 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:36,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1236588412, now seen corresponding path program 10 times [2021-10-13 19:52:36,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:36,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694444661] [2021-10-13 19:52:36,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:52:36,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:36,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:36,281 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:36,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 19:52:36,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:52:36,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:36,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:36,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:39,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:39,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:39,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694444661] [2021-10-13 19:52:39,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694444661] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:39,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:39,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:39,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046184502] [2021-10-13 19:52:39,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:39,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:52:39,798 INFO L87 Difference]: Start difference. First operand 6816 states and 37265 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:44,606 INFO L93 Difference]: Finished difference Result 7512 states and 39698 transitions. [2021-10-13 19:52:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:44,637 INFO L225 Difference]: With dead ends: 7512 [2021-10-13 19:52:44,638 INFO L226 Difference]: Without dead ends: 7482 [2021-10-13 19:52:44,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6305.6ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:52:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-10-13 19:52:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 7070. [2021-10-13 19:52:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 7069 states have (on average 5.444900268779176) internal successors, (38490), 7069 states have internal predecessors, (38490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 38490 transitions. [2021-10-13 19:52:44,989 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 38490 transitions. Word has length 25 [2021-10-13 19:52:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:44,990 INFO L470 AbstractCegarLoop]: Abstraction has 7070 states and 38490 transitions. [2021-10-13 19:52:44,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 38490 transitions. [2021-10-13 19:52:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:45,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:45,013 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:45,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:45,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:45,227 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:45,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:45,228 INFO L82 PathProgramCache]: Analyzing trace with hash 983384028, now seen corresponding path program 11 times [2021-10-13 19:52:45,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:45,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35849873] [2021-10-13 19:52:45,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:52:45,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:45,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:45,230 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:45,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-13 19:52:46,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:52:46,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:52:46,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:52:46,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:52:46,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:46,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35849873] [2021-10-13 19:52:46,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35849873] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:46,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:46,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:52:46,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227173484] [2021-10-13 19:52:46,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:52:46,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:52:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:52:46,431 INFO L87 Difference]: Start difference. First operand 7070 states and 38490 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:47,029 INFO L93 Difference]: Finished difference Result 8810 states and 45500 transitions. [2021-10-13 19:52:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:47,071 INFO L225 Difference]: With dead ends: 8810 [2021-10-13 19:52:47,071 INFO L226 Difference]: Without dead ends: 8810 [2021-10-13 19:52:47,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.6ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2021-10-13 19:52:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 7010. [2021-10-13 19:52:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 7009 states have (on average 5.429733200171208) internal successors, (38057), 7009 states have internal predecessors, (38057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 38057 transitions. [2021-10-13 19:52:47,308 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 38057 transitions. Word has length 25 [2021-10-13 19:52:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:47,308 INFO L470 AbstractCegarLoop]: Abstraction has 7010 states and 38057 transitions. [2021-10-13 19:52:47,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 38057 transitions. [2021-10-13 19:52:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:47,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:47,327 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:47,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:47,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:47,528 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1976534826, now seen corresponding path program 12 times [2021-10-13 19:52:47,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:47,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465373191] [2021-10-13 19:52:47,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:52:47,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:47,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:47,531 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:47,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-13 19:52:48,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:52:48,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:48,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:48,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:50,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:51,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:51,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465373191] [2021-10-13 19:52:51,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465373191] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:51,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:51,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:51,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585542334] [2021-10-13 19:52:51,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:51,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:52:51,218 INFO L87 Difference]: Start difference. First operand 7010 states and 38057 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:55,837 INFO L93 Difference]: Finished difference Result 7464 states and 39420 transitions. [2021-10-13 19:52:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:52:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:55,866 INFO L225 Difference]: With dead ends: 7464 [2021-10-13 19:52:55,867 INFO L226 Difference]: Without dead ends: 7434 [2021-10-13 19:52:55,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6314.1ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:52:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7434 states. [2021-10-13 19:52:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7434 to 6996. [2021-10-13 19:52:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6996 states, 6995 states have (on average 5.429163688348821) internal successors, (37977), 6995 states have internal predecessors, (37977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 37977 transitions. [2021-10-13 19:52:56,071 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 37977 transitions. Word has length 25 [2021-10-13 19:52:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:56,071 INFO L470 AbstractCegarLoop]: Abstraction has 6996 states and 37977 transitions. [2021-10-13 19:52:56,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 37977 transitions. [2021-10-13 19:52:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:56,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:56,090 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:56,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:56,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:52:56,291 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:56,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1743604748, now seen corresponding path program 13 times [2021-10-13 19:52:56,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:56,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825741827] [2021-10-13 19:52:56,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:52:56,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:56,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:56,295 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:52:56,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 19:52:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:52:57,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:52:57,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:57,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:58,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:58,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825741827] [2021-10-13 19:52:58,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825741827] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:58,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:58,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:52:58,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603527382] [2021-10-13 19:52:58,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:52:58,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:58,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:52:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:52:58,625 INFO L87 Difference]: Start difference. First operand 6996 states and 37977 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:04,670 INFO L93 Difference]: Finished difference Result 11584 states and 57954 transitions. [2021-10-13 19:53:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:53:04,671 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:04,722 INFO L225 Difference]: With dead ends: 11584 [2021-10-13 19:53:04,722 INFO L226 Difference]: Without dead ends: 11584 [2021-10-13 19:53:04,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1685.1ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:53:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11584 states. [2021-10-13 19:53:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11584 to 7570. [2021-10-13 19:53:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 5.501651473114018) internal successors, (41642), 7569 states have internal predecessors, (41642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 41642 transitions. [2021-10-13 19:53:05,009 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 41642 transitions. Word has length 25 [2021-10-13 19:53:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:05,010 INFO L470 AbstractCegarLoop]: Abstraction has 7570 states and 41642 transitions. [2021-10-13 19:53:05,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 41642 transitions. [2021-10-13 19:53:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:05,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:05,031 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:05,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-13 19:53:05,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:05,232 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1303818364, now seen corresponding path program 14 times [2021-10-13 19:53:05,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:05,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517514609] [2021-10-13 19:53:05,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:53:05,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:05,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:05,235 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:05,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 19:53:06,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:53:06,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:06,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:06,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:06,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:06,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:06,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517514609] [2021-10-13 19:53:06,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517514609] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:06,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:06,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:06,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098450719] [2021-10-13 19:53:06,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:06,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:06,930 INFO L87 Difference]: Start difference. First operand 7570 states and 41642 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:07,674 INFO L93 Difference]: Finished difference Result 8150 states and 43728 transitions. [2021-10-13 19:53:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:53:07,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:07,712 INFO L225 Difference]: With dead ends: 8150 [2021-10-13 19:53:07,712 INFO L226 Difference]: Without dead ends: 8120 [2021-10-13 19:53:07,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 300.1ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:53:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2021-10-13 19:53:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 7760. [2021-10-13 19:53:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7760 states, 7759 states have (on average 5.485242943678309) internal successors, (42560), 7759 states have internal predecessors, (42560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 42560 transitions. [2021-10-13 19:53:07,944 INFO L78 Accepts]: Start accepts. Automaton has 7760 states and 42560 transitions. Word has length 25 [2021-10-13 19:53:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:07,944 INFO L470 AbstractCegarLoop]: Abstraction has 7760 states and 42560 transitions. [2021-10-13 19:53:07,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states and 42560 transitions. [2021-10-13 19:53:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:07,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:07,967 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:07,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:08,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:08,168 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:08,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1050613980, now seen corresponding path program 15 times [2021-10-13 19:53:08,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:08,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206604219] [2021-10-13 19:53:08,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:53:08,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:08,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:08,171 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:08,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-13 19:53:09,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:53:09,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:09,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 19:53:09,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:09,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:10,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:10,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206604219] [2021-10-13 19:53:10,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206604219] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:10,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:10,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:53:10,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011397093] [2021-10-13 19:53:10,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:53:10,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:10,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:53:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:53:10,788 INFO L87 Difference]: Start difference. First operand 7760 states and 42560 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:21,146 INFO L93 Difference]: Finished difference Result 12830 states and 65930 transitions. [2021-10-13 19:53:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:53:21,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:21,204 INFO L225 Difference]: With dead ends: 12830 [2021-10-13 19:53:21,204 INFO L226 Difference]: Without dead ends: 12830 [2021-10-13 19:53:21,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3235.0ms TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:53:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12830 states. [2021-10-13 19:53:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12830 to 8396. [2021-10-13 19:53:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8396 states, 8395 states have (on average 5.520309708159619) internal successors, (46343), 8395 states have internal predecessors, (46343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 46343 transitions. [2021-10-13 19:53:21,625 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 46343 transitions. Word has length 25 [2021-10-13 19:53:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:21,625 INFO L470 AbstractCegarLoop]: Abstraction has 8396 states and 46343 transitions. [2021-10-13 19:53:21,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 46343 transitions. [2021-10-13 19:53:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:21,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:21,650 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:21,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:21,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:21,851 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1998090764, now seen corresponding path program 16 times [2021-10-13 19:53:21,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:21,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245342720] [2021-10-13 19:53:21,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:53:21,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:21,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:21,855 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:21,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-13 19:53:22,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:53:22,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:22,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:53:22,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:23,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:24,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:24,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245342720] [2021-10-13 19:53:24,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245342720] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:24,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:24,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:53:24,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138673198] [2021-10-13 19:53:24,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:53:24,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:53:24,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:53:24,030 INFO L87 Difference]: Start difference. First operand 8396 states and 46343 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:30,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:30,160 INFO L93 Difference]: Finished difference Result 13330 states and 67770 transitions. [2021-10-13 19:53:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:53:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:30,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:30,352 INFO L225 Difference]: With dead ends: 13330 [2021-10-13 19:53:30,352 INFO L226 Difference]: Without dead ends: 13330 [2021-10-13 19:53:30,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3121.8ms TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:53:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13330 states. [2021-10-13 19:53:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13330 to 9148. [2021-10-13 19:53:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9148 states, 9147 states have (on average 5.530556466601071) internal successors, (50588), 9147 states have internal predecessors, (50588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9148 states to 9148 states and 50588 transitions. [2021-10-13 19:53:30,718 INFO L78 Accepts]: Start accepts. Automaton has 9148 states and 50588 transitions. Word has length 25 [2021-10-13 19:53:30,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:30,718 INFO L470 AbstractCegarLoop]: Abstraction has 9148 states and 50588 transitions. [2021-10-13 19:53:30,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 9148 states and 50588 transitions. [2021-10-13 19:53:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:30,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:30,746 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:30,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-13 19:53:30,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:30,947 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:30,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1997933340, now seen corresponding path program 14 times [2021-10-13 19:53:30,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:30,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691640065] [2021-10-13 19:53:30,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:53:30,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:30,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:30,951 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:30,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-13 19:53:31,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:53:31,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:31,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:31,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:34,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:34,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:34,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691640065] [2021-10-13 19:53:34,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691640065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:34,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:34,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:34,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635383385] [2021-10-13 19:53:34,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:34,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:53:34,982 INFO L87 Difference]: Start difference. First operand 9148 states and 50588 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:40,025 INFO L93 Difference]: Finished difference Result 9728 states and 52406 transitions. [2021-10-13 19:53:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:53:40,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:40,075 INFO L225 Difference]: With dead ends: 9728 [2021-10-13 19:53:40,075 INFO L226 Difference]: Without dead ends: 9678 [2021-10-13 19:53:40,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6306.6ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:53:40,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9678 states. [2021-10-13 19:53:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9678 to 9134. [2021-10-13 19:53:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9134 states, 9133 states have (on average 5.530055841454067) internal successors, (50506), 9133 states have internal predecessors, (50506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 50506 transitions. [2021-10-13 19:53:40,368 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 50506 transitions. Word has length 25 [2021-10-13 19:53:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:40,369 INFO L470 AbstractCegarLoop]: Abstraction has 9134 states and 50506 transitions. [2021-10-13 19:53:40,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 50506 transitions. [2021-10-13 19:53:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:40,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:40,397 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:40,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:40,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:40,604 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:40,604 INFO L82 PathProgramCache]: Analyzing trace with hash -827601711, now seen corresponding path program 7 times [2021-10-13 19:53:40,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:40,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069646615] [2021-10-13 19:53:40,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:53:40,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:40,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:40,607 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:40,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-13 19:53:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:53:41,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:41,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:42,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:42,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:42,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069646615] [2021-10-13 19:53:42,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069646615] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:42,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:42,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:42,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479310824] [2021-10-13 19:53:42,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:42,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:42,694 INFO L87 Difference]: Start difference. First operand 9134 states and 50506 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:43,434 INFO L93 Difference]: Finished difference Result 10500 states and 56260 transitions. [2021-10-13 19:53:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:53:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:43,479 INFO L225 Difference]: With dead ends: 10500 [2021-10-13 19:53:43,479 INFO L226 Difference]: Without dead ends: 10400 [2021-10-13 19:53:43,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 370.0ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10400 states. [2021-10-13 19:53:43,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10400 to 9388. [2021-10-13 19:53:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9388 states, 9387 states have (on average 5.549802918930435) internal successors, (52096), 9387 states have internal predecessors, (52096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 52096 transitions. [2021-10-13 19:53:43,885 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 52096 transitions. Word has length 25 [2021-10-13 19:53:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:43,885 INFO L470 AbstractCegarLoop]: Abstraction has 9388 states and 52096 transitions. [2021-10-13 19:53:43,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 52096 transitions. [2021-10-13 19:53:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:43,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:43,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:43,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:44,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:44,120 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:44,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:44,120 INFO L82 PathProgramCache]: Analyzing trace with hash -480632963, now seen corresponding path program 8 times [2021-10-13 19:53:44,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:44,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274781272] [2021-10-13 19:53:44,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:53:44,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:44,122 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:44,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-13 19:53:45,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:53:45,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:45,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:45,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:45,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:46,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:46,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274781272] [2021-10-13 19:53:46,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274781272] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:46,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:46,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:46,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879084221] [2021-10-13 19:53:46,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:46,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:46,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:46,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:46,391 INFO L87 Difference]: Start difference. First operand 9388 states and 52096 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:49,471 INFO L93 Difference]: Finished difference Result 10642 states and 57324 transitions. [2021-10-13 19:53:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:53:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:49,520 INFO L225 Difference]: With dead ends: 10642 [2021-10-13 19:53:49,520 INFO L226 Difference]: Without dead ends: 10554 [2021-10-13 19:53:49,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 414.3ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10554 states. [2021-10-13 19:53:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10554 to 9494. [2021-10-13 19:53:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9494 states, 9493 states have (on average 5.580638365111135) internal successors, (52977), 9493 states have internal predecessors, (52977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9494 states to 9494 states and 52977 transitions. [2021-10-13 19:53:49,880 INFO L78 Accepts]: Start accepts. Automaton has 9494 states and 52977 transitions. Word has length 25 [2021-10-13 19:53:49,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:49,880 INFO L470 AbstractCegarLoop]: Abstraction has 9494 states and 52977 transitions. [2021-10-13 19:53:49,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9494 states and 52977 transitions. [2021-10-13 19:53:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:49,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:49,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:49,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:50,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:50,110 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:50,111 INFO L82 PathProgramCache]: Analyzing trace with hash 729116051, now seen corresponding path program 9 times [2021-10-13 19:53:50,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:50,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121922834] [2021-10-13 19:53:50,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:53:50,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:50,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:50,113 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:50,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-13 19:53:51,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:53:51,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:51,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:51,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:52,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:52,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121922834] [2021-10-13 19:53:52,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121922834] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:52,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:52,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:52,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573673175] [2021-10-13 19:53:52,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:52,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:52,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:52,141 INFO L87 Difference]: Start difference. First operand 9494 states and 52977 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:52,999 INFO L93 Difference]: Finished difference Result 11296 states and 60686 transitions. [2021-10-13 19:53:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:52,999 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:53,051 INFO L225 Difference]: With dead ends: 11296 [2021-10-13 19:53:53,051 INFO L226 Difference]: Without dead ends: 11174 [2021-10-13 19:53:53,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 344.8ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11174 states. [2021-10-13 19:53:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11174 to 9686. [2021-10-13 19:53:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9686 states, 9685 states have (on average 5.6101187403200825) internal successors, (54334), 9685 states have internal predecessors, (54334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9686 states to 9686 states and 54334 transitions. [2021-10-13 19:53:53,412 INFO L78 Accepts]: Start accepts. Automaton has 9686 states and 54334 transitions. Word has length 25 [2021-10-13 19:53:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:53,412 INFO L470 AbstractCegarLoop]: Abstraction has 9686 states and 54334 transitions. [2021-10-13 19:53:53,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9686 states and 54334 transitions. [2021-10-13 19:53:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:53,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:53,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:53,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:53,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:53,663 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:53,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:53,663 INFO L82 PathProgramCache]: Analyzing trace with hash -11679341, now seen corresponding path program 10 times [2021-10-13 19:53:53,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:53,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763465683] [2021-10-13 19:53:53,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:53:53,665 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:53,666 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:53,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-13 19:53:54,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:53:54,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:54,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:54,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:55,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:55,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:55,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763465683] [2021-10-13 19:53:55,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763465683] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:55,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:55,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:55,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59358590] [2021-10-13 19:53:55,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:55,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:55,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:55,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:55,875 INFO L87 Difference]: Start difference. First operand 9686 states and 54334 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:56,810 INFO L93 Difference]: Finished difference Result 10670 states and 58420 transitions. [2021-10-13 19:53:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:53:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:53:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:56,876 INFO L225 Difference]: With dead ends: 10670 [2021-10-13 19:53:56,876 INFO L226 Difference]: Without dead ends: 10588 [2021-10-13 19:53:56,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 411.6ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10588 states. [2021-10-13 19:53:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10588 to 9954. [2021-10-13 19:53:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9954 states, 9953 states have (on average 5.6130814829699585) internal successors, (55867), 9953 states have internal predecessors, (55867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9954 states to 9954 states and 55867 transitions. [2021-10-13 19:53:57,326 INFO L78 Accepts]: Start accepts. Automaton has 9954 states and 55867 transitions. Word has length 25 [2021-10-13 19:53:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:57,327 INFO L470 AbstractCegarLoop]: Abstraction has 9954 states and 55867 transitions. [2021-10-13 19:53:57,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9954 states and 55867 transitions. [2021-10-13 19:53:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:57,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:57,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:57,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:57,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:53:57,674 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:57,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:57,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1138866579, now seen corresponding path program 11 times [2021-10-13 19:53:57,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:57,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959006625] [2021-10-13 19:53:57,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:53:57,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:57,677 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:53:57,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-13 19:53:58,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:53:58,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:58,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:58,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:59,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:59,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:59,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959006625] [2021-10-13 19:53:59,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959006625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:59,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:59,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:59,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034453809] [2021-10-13 19:53:59,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:59,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:59,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:59,818 INFO L87 Difference]: Start difference. First operand 9954 states and 55867 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:00,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:00,921 INFO L93 Difference]: Finished difference Result 11654 states and 63071 transitions. [2021-10-13 19:54:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:54:00,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:00,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:00,972 INFO L225 Difference]: With dead ends: 11654 [2021-10-13 19:54:00,972 INFO L226 Difference]: Without dead ends: 11548 [2021-10-13 19:54:00,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 334.0ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11548 states. [2021-10-13 19:54:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11548 to 10114. [2021-10-13 19:54:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10114 states, 10113 states have (on average 5.637298526648868) internal successors, (57010), 10113 states have internal predecessors, (57010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10114 states to 10114 states and 57010 transitions. [2021-10-13 19:54:01,466 INFO L78 Accepts]: Start accepts. Automaton has 10114 states and 57010 transitions. Word has length 25 [2021-10-13 19:54:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:01,466 INFO L470 AbstractCegarLoop]: Abstraction has 10114 states and 57010 transitions. [2021-10-13 19:54:01,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 10114 states and 57010 transitions. [2021-10-13 19:54:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:01,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:01,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:01,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-13 19:54:01,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:01,696 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:01,697 INFO L82 PathProgramCache]: Analyzing trace with hash -797030699, now seen corresponding path program 12 times [2021-10-13 19:54:01,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:01,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662430337] [2021-10-13 19:54:01,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:54:01,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:01,701 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:01,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-13 19:54:02,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:54:02,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:02,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:02,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:03,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:04,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:04,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662430337] [2021-10-13 19:54:04,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662430337] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:04,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:04,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:04,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369603825] [2021-10-13 19:54:04,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:04,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:04,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:04,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:04,008 INFO L87 Difference]: Start difference. First operand 10114 states and 57010 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:04,657 INFO L93 Difference]: Finished difference Result 11056 states and 60878 transitions. [2021-10-13 19:54:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:54:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:04,708 INFO L225 Difference]: With dead ends: 11056 [2021-10-13 19:54:04,708 INFO L226 Difference]: Without dead ends: 10976 [2021-10-13 19:54:04,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 310.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2021-10-13 19:54:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10250. [2021-10-13 19:54:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10250 states, 10249 states have (on average 5.6465020977656355) internal successors, (57871), 10249 states have internal predecessors, (57871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10250 states to 10250 states and 57871 transitions. [2021-10-13 19:54:05,172 INFO L78 Accepts]: Start accepts. Automaton has 10250 states and 57871 transitions. Word has length 25 [2021-10-13 19:54:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:05,172 INFO L470 AbstractCegarLoop]: Abstraction has 10250 states and 57871 transitions. [2021-10-13 19:54:05,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10250 states and 57871 transitions. [2021-10-13 19:54:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:05,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:05,203 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:05,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:05,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:05,404 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:05,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1493521596, now seen corresponding path program 15 times [2021-10-13 19:54:05,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:05,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380911239] [2021-10-13 19:54:05,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:54:05,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:05,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:05,407 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:05,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-13 19:54:06,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:54:06,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:06,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:06,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:07,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:07,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:07,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380911239] [2021-10-13 19:54:07,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380911239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:07,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:07,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:07,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87144351] [2021-10-13 19:54:07,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:07,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:07,438 INFO L87 Difference]: Start difference. First operand 10250 states and 57871 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:10,505 INFO L93 Difference]: Finished difference Result 10888 states and 60184 transitions. [2021-10-13 19:54:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:54:10,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:10,551 INFO L225 Difference]: With dead ends: 10888 [2021-10-13 19:54:10,551 INFO L226 Difference]: Without dead ends: 10838 [2021-10-13 19:54:10,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 270.4ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2021-10-13 19:54:10,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 10400. [2021-10-13 19:54:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10400 states, 10399 states have (on average 5.632272333878258) internal successors, (58570), 10399 states have internal predecessors, (58570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 58570 transitions. [2021-10-13 19:54:10,862 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 58570 transitions. Word has length 25 [2021-10-13 19:54:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:10,863 INFO L470 AbstractCegarLoop]: Abstraction has 10400 states and 58570 transitions. [2021-10-13 19:54:10,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 58570 transitions. [2021-10-13 19:54:10,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:10,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:10,895 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:10,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-13 19:54:11,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:11,098 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:11,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:11,099 INFO L82 PathProgramCache]: Analyzing trace with hash -675209842, now seen corresponding path program 16 times [2021-10-13 19:54:11,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:11,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648493337] [2021-10-13 19:54:11,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:54:11,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:11,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:11,105 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:11,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-13 19:54:12,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:54:12,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:12,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:12,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:13,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:13,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:13,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648493337] [2021-10-13 19:54:13,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648493337] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:13,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:13,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:13,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579556947] [2021-10-13 19:54:13,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:13,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:13,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:13,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:13,373 INFO L87 Difference]: Start difference. First operand 10400 states and 58570 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:18,303 INFO L93 Difference]: Finished difference Result 11006 states and 60506 transitions. [2021-10-13 19:54:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:54:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:18,368 INFO L225 Difference]: With dead ends: 11006 [2021-10-13 19:54:18,368 INFO L226 Difference]: Without dead ends: 10956 [2021-10-13 19:54:18,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 329.9ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:54:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10956 states. [2021-10-13 19:54:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10956 to 10400. [2021-10-13 19:54:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10400 states, 10399 states have (on average 5.632272333878258) internal successors, (58570), 10399 states have internal predecessors, (58570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 58570 transitions. [2021-10-13 19:54:18,788 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 58570 transitions. Word has length 25 [2021-10-13 19:54:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:18,788 INFO L470 AbstractCegarLoop]: Abstraction has 10400 states and 58570 transitions. [2021-10-13 19:54:18,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 58570 transitions. [2021-10-13 19:54:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:18,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:18,821 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:18,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-13 19:54:19,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:19,022 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:19,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:19,023 INFO L82 PathProgramCache]: Analyzing trace with hash 548231165, now seen corresponding path program 13 times [2021-10-13 19:54:19,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:19,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761981846] [2021-10-13 19:54:19,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:54:19,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:19,025 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:19,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-13 19:54:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:54:20,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:20,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:20,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:21,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:21,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761981846] [2021-10-13 19:54:21,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761981846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:21,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:21,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:21,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263704780] [2021-10-13 19:54:21,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:21,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:21,195 INFO L87 Difference]: Start difference. First operand 10400 states and 58570 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:21,945 INFO L93 Difference]: Finished difference Result 12470 states and 67701 transitions. [2021-10-13 19:54:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:54:21,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:22,000 INFO L225 Difference]: With dead ends: 12470 [2021-10-13 19:54:22,000 INFO L226 Difference]: Without dead ends: 12352 [2021-10-13 19:54:22,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 329.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12352 states. [2021-10-13 19:54:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12352 to 10610. [2021-10-13 19:54:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10610 states, 10609 states have (on average 5.657931944575361) internal successors, (60025), 10609 states have internal predecessors, (60025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 60025 transitions. [2021-10-13 19:54:22,455 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 60025 transitions. Word has length 25 [2021-10-13 19:54:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:22,456 INFO L470 AbstractCegarLoop]: Abstraction has 10610 states and 60025 transitions. [2021-10-13 19:54:22,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 60025 transitions. [2021-10-13 19:54:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:22,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:22,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:22,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:22,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:22,688 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash 608577811, now seen corresponding path program 14 times [2021-10-13 19:54:22,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:22,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467093547] [2021-10-13 19:54:22,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:54:22,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:22,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:22,691 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:22,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-13 19:54:24,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:54:24,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:24,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:24,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:24,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:25,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:25,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467093547] [2021-10-13 19:54:25,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467093547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:25,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:25,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:25,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627787490] [2021-10-13 19:54:25,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:25,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:25,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:25,116 INFO L87 Difference]: Start difference. First operand 10610 states and 60025 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:26,400 INFO L93 Difference]: Finished difference Result 12732 states and 69392 transitions. [2021-10-13 19:54:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:54:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:26,463 INFO L225 Difference]: With dead ends: 12732 [2021-10-13 19:54:26,463 INFO L226 Difference]: Without dead ends: 12634 [2021-10-13 19:54:26,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 342.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2021-10-13 19:54:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 10750. [2021-10-13 19:54:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10750 states, 10749 states have (on average 5.685086984835799) internal successors, (61109), 10749 states have internal predecessors, (61109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 61109 transitions. [2021-10-13 19:54:27,054 INFO L78 Accepts]: Start accepts. Automaton has 10750 states and 61109 transitions. Word has length 25 [2021-10-13 19:54:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:27,056 INFO L470 AbstractCegarLoop]: Abstraction has 10750 states and 61109 transitions. [2021-10-13 19:54:27,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 10750 states and 61109 transitions. [2021-10-13 19:54:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:27,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:27,105 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:27,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:27,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:27,330 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 71564471, now seen corresponding path program 15 times [2021-10-13 19:54:27,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:27,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457963635] [2021-10-13 19:54:27,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:54:27,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:27,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:27,339 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:27,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-13 19:54:28,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:54:28,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:28,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:28,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:29,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:29,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:29,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457963635] [2021-10-13 19:54:29,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457963635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:29,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:29,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:29,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110673960] [2021-10-13 19:54:29,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:29,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:29,900 INFO L87 Difference]: Start difference. First operand 10750 states and 61109 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:31,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:31,294 INFO L93 Difference]: Finished difference Result 12702 states and 69617 transitions. [2021-10-13 19:54:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:54:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:31,357 INFO L225 Difference]: With dead ends: 12702 [2021-10-13 19:54:31,357 INFO L226 Difference]: Without dead ends: 12588 [2021-10-13 19:54:31,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 329.1ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:31,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12588 states. [2021-10-13 19:54:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12588 to 10932. [2021-10-13 19:54:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10932 states, 10931 states have (on average 5.704052694172537) internal successors, (62351), 10931 states have internal predecessors, (62351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10932 states to 10932 states and 62351 transitions. [2021-10-13 19:54:31,959 INFO L78 Accepts]: Start accepts. Automaton has 10932 states and 62351 transitions. Word has length 25 [2021-10-13 19:54:31,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:31,959 INFO L470 AbstractCegarLoop]: Abstraction has 10932 states and 62351 transitions. [2021-10-13 19:54:31,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10932 states and 62351 transitions. [2021-10-13 19:54:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:32,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:32,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:32,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2021-10-13 19:54:32,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:32,205 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:32,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:32,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2085320443, now seen corresponding path program 16 times [2021-10-13 19:54:32,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:32,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703155093] [2021-10-13 19:54:32,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:54:32,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:32,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:32,209 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:32,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-13 19:54:33,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:54:33,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:33,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:33,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:34,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:34,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:34,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703155093] [2021-10-13 19:54:34,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703155093] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:34,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:34,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:34,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362115383] [2021-10-13 19:54:34,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:34,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:34,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:34,682 INFO L87 Difference]: Start difference. First operand 10932 states and 62351 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:35,501 INFO L93 Difference]: Finished difference Result 11956 states and 66331 transitions. [2021-10-13 19:54:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:54:35,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:35,561 INFO L225 Difference]: With dead ends: 11956 [2021-10-13 19:54:35,561 INFO L226 Difference]: Without dead ends: 11878 [2021-10-13 19:54:35,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 339.8ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2021-10-13 19:54:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 10916. [2021-10-13 19:54:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10916 states, 10915 states have (on average 5.7007787448465415) internal successors, (62224), 10915 states have internal predecessors, (62224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 62224 transitions. [2021-10-13 19:54:36,057 INFO L78 Accepts]: Start accepts. Automaton has 10916 states and 62224 transitions. Word has length 25 [2021-10-13 19:54:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:36,057 INFO L470 AbstractCegarLoop]: Abstraction has 10916 states and 62224 transitions. [2021-10-13 19:54:36,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 10916 states and 62224 transitions. [2021-10-13 19:54:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:54:36,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:36,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:36,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:36,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:36,294 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:36,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2098582681, now seen corresponding path program 17 times [2021-10-13 19:54:36,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:36,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333498719] [2021-10-13 19:54:36,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:54:36,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:36,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:36,297 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:36,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-13 19:54:37,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:54:37,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:37,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:54:37,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:38,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:38,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:38,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333498719] [2021-10-13 19:54:38,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333498719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:38,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:38,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:54:38,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859942644] [2021-10-13 19:54:38,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:54:38,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:54:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:38,690 INFO L87 Difference]: Start difference. First operand 10916 states and 62224 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:41,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:41,627 INFO L93 Difference]: Finished difference Result 12938 states and 71100 transitions. [2021-10-13 19:54:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:54:41,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:54:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:41,691 INFO L225 Difference]: With dead ends: 12938 [2021-10-13 19:54:41,692 INFO L226 Difference]: Without dead ends: 12858 [2021-10-13 19:54:41,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 356.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:54:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12858 states. [2021-10-13 19:54:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12858 to 11036. [2021-10-13 19:54:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11036 states, 11035 states have (on average 5.724150430448573) internal successors, (63166), 11035 states have internal predecessors, (63166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11036 states to 11036 states and 63166 transitions. [2021-10-13 19:54:42,271 INFO L78 Accepts]: Start accepts. Automaton has 11036 states and 63166 transitions. Word has length 25 [2021-10-13 19:54:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:42,271 INFO L470 AbstractCegarLoop]: Abstraction has 11036 states and 63166 transitions. [2021-10-13 19:54:42,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11036 states and 63166 transitions. [2021-10-13 19:54:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:54:42,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:42,431 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:42,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:42,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:42,643 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash -902756182, now seen corresponding path program 17 times [2021-10-13 19:54:42,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:42,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072081483] [2021-10-13 19:54:42,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:54:42,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:42,646 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:42,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-13 19:54:44,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:54:44,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:44,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 19:54:44,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:44,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:45,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:45,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072081483] [2021-10-13 19:54:45,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072081483] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:45,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:45,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 19:54:45,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490455608] [2021-10-13 19:54:45,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:54:45,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:54:45,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:54:45,374 INFO L87 Difference]: Start difference. First operand 11036 states and 63166 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:52,149 INFO L93 Difference]: Finished difference Result 25670 states and 132637 transitions. [2021-10-13 19:54:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:54:52,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:54:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:52,275 INFO L225 Difference]: With dead ends: 25670 [2021-10-13 19:54:52,275 INFO L226 Difference]: Without dead ends: 25670 [2021-10-13 19:54:52,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3928.3ms TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:54:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25670 states. [2021-10-13 19:54:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25670 to 14430. [2021-10-13 19:54:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14430 states, 14429 states have (on average 5.6671286991475505) internal successors, (81771), 14429 states have internal predecessors, (81771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14430 states to 14430 states and 81771 transitions. [2021-10-13 19:54:53,003 INFO L78 Accepts]: Start accepts. Automaton has 14430 states and 81771 transitions. Word has length 26 [2021-10-13 19:54:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:53,003 INFO L470 AbstractCegarLoop]: Abstraction has 14430 states and 81771 transitions. [2021-10-13 19:54:53,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 14430 states and 81771 transitions. [2021-10-13 19:54:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:54:53,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:53,051 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:53,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:53,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:53,258 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1124832149, now seen corresponding path program 18 times [2021-10-13 19:54:53,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:53,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652843357] [2021-10-13 19:54:53,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:54:53,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:53,261 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:53,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-13 19:54:54,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:54:54,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:54,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:54:54,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:55,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:55,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:55,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652843357] [2021-10-13 19:54:55,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652843357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:55,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:55,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:54:55,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968638527] [2021-10-13 19:54:55,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:54:55,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:54:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:54:55,650 INFO L87 Difference]: Start difference. First operand 14430 states and 81771 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:58,638 INFO L93 Difference]: Finished difference Result 21772 states and 115094 transitions. [2021-10-13 19:54:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:54:58,639 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:54:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:58,748 INFO L225 Difference]: With dead ends: 21772 [2021-10-13 19:54:58,748 INFO L226 Difference]: Without dead ends: 21730 [2021-10-13 19:54:58,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1177.7ms TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:54:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21730 states. [2021-10-13 19:54:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21730 to 15156. [2021-10-13 19:54:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15156 states, 15155 states have (on average 5.610425602111515) internal successors, (85026), 15155 states have internal predecessors, (85026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15156 states to 15156 states and 85026 transitions. [2021-10-13 19:54:59,643 INFO L78 Accepts]: Start accepts. Automaton has 15156 states and 85026 transitions. Word has length 26 [2021-10-13 19:54:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:59,646 INFO L470 AbstractCegarLoop]: Abstraction has 15156 states and 85026 transitions. [2021-10-13 19:54:59,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15156 states and 85026 transitions. [2021-10-13 19:54:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:54:59,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:59,721 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:59,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:59,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:54:59,937 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash 34880404, now seen corresponding path program 19 times [2021-10-13 19:54:59,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:59,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156235480] [2021-10-13 19:54:59,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:54:59,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:59,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:59,940 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:54:59,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-13 19:55:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:55:01,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:55:01,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:55:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:01,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:55:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:02,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:55:02,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156235480] [2021-10-13 19:55:02,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156235480] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:55:02,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:55:02,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 19:55:02,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946166940] [2021-10-13 19:55:02,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:55:02,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:55:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:55:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:55:02,419 INFO L87 Difference]: Start difference. First operand 15156 states and 85026 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:55:12,984 INFO L93 Difference]: Finished difference Result 36508 states and 189832 transitions. [2021-10-13 19:55:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 19:55:12,985 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:55:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:55:13,414 INFO L225 Difference]: With dead ends: 36508 [2021-10-13 19:55:13,414 INFO L226 Difference]: Without dead ends: 36508 [2021-10-13 19:55:13,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3345.7ms TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:55:13,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36508 states. [2021-10-13 19:55:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36508 to 17244. [2021-10-13 19:55:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17244 states, 17243 states have (on average 5.757176825378415) internal successors, (99271), 17243 states have internal predecessors, (99271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17244 states to 17244 states and 99271 transitions. [2021-10-13 19:55:15,336 INFO L78 Accepts]: Start accepts. Automaton has 17244 states and 99271 transitions. Word has length 26 [2021-10-13 19:55:15,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:55:15,336 INFO L470 AbstractCegarLoop]: Abstraction has 17244 states and 99271 transitions. [2021-10-13 19:55:15,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 17244 states and 99271 transitions. [2021-10-13 19:55:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:55:15,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:55:15,575 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:55:15,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-10-13 19:55:15,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:55:15,790 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:55:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:55:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1892326997, now seen corresponding path program 20 times [2021-10-13 19:55:15,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:55:15,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523353355] [2021-10-13 19:55:15,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:55:15,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:55:15,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:55:15,793 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:55:15,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-13 19:55:17,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:55:17,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:55:17,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:55:17,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:55:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:17,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:55:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:17,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:55:17,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523353355] [2021-10-13 19:55:17,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523353355] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:55:17,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:55:17,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:55:17,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855888208] [2021-10-13 19:55:17,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:55:17,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:55:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:55:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:55:17,811 INFO L87 Difference]: Start difference. First operand 17244 states and 99271 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:55:40,167 INFO L93 Difference]: Finished difference Result 28260 states and 150367 transitions. [2021-10-13 19:55:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:55:40,169 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:55:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:55:40,403 INFO L225 Difference]: With dead ends: 28260 [2021-10-13 19:55:40,403 INFO L226 Difference]: Without dead ends: 28190 [2021-10-13 19:55:40,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3753.5ms TimeCoverageRelationStatistics Valid=96, Invalid=503, Unknown=1, NotChecked=0, Total=600 [2021-10-13 19:55:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28190 states. [2021-10-13 19:55:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28190 to 18430. [2021-10-13 19:55:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18430 states, 18429 states have (on average 5.813554723533561) internal successors, (107138), 18429 states have internal predecessors, (107138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18430 states to 18430 states and 107138 transitions. [2021-10-13 19:55:41,553 INFO L78 Accepts]: Start accepts. Automaton has 18430 states and 107138 transitions. Word has length 26 [2021-10-13 19:55:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:55:41,554 INFO L470 AbstractCegarLoop]: Abstraction has 18430 states and 107138 transitions. [2021-10-13 19:55:41,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18430 states and 107138 transitions. [2021-10-13 19:55:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:55:42,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:55:42,043 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:55:42,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-13 19:55:42,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:55:42,257 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:55:42,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:55:42,258 INFO L82 PathProgramCache]: Analyzing trace with hash 356278434, now seen corresponding path program 21 times [2021-10-13 19:55:42,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:55:42,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760593252] [2021-10-13 19:55:42,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:55:42,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:55:42,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:55:42,260 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:55:42,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-13 19:55:43,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 19:55:43,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:55:43,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:55:43,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:55:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:44,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:55:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:45,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:55:45,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760593252] [2021-10-13 19:55:45,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760593252] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:55:45,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:55:45,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 19:55:45,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854182591] [2021-10-13 19:55:45,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:55:45,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:55:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:55:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:55:45,240 INFO L87 Difference]: Start difference. First operand 18430 states and 107138 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:55:57,533 INFO L93 Difference]: Finished difference Result 31774 states and 169912 transitions. [2021-10-13 19:55:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:55:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:55:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:55:57,859 INFO L225 Difference]: With dead ends: 31774 [2021-10-13 19:55:57,859 INFO L226 Difference]: Without dead ends: 31774 [2021-10-13 19:55:57,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1814.6ms TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:55:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31774 states. [2021-10-13 19:55:58,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31774 to 19648. [2021-10-13 19:55:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19648 states, 19647 states have (on average 5.865577441848628) internal successors, (115241), 19647 states have internal predecessors, (115241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19648 states to 19648 states and 115241 transitions. [2021-10-13 19:55:59,093 INFO L78 Accepts]: Start accepts. Automaton has 19648 states and 115241 transitions. Word has length 26 [2021-10-13 19:55:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:55:59,094 INFO L470 AbstractCegarLoop]: Abstraction has 19648 states and 115241 transitions. [2021-10-13 19:55:59,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 19648 states and 115241 transitions. [2021-10-13 19:55:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:55:59,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:55:59,395 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:55:59,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2021-10-13 19:55:59,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:55:59,609 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:55:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:55:59,609 INFO L82 PathProgramCache]: Analyzing trace with hash 542453827, now seen corresponding path program 22 times [2021-10-13 19:55:59,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:55:59,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995573335] [2021-10-13 19:55:59,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:55:59,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:55:59,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:55:59,612 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:55:59,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-13 19:56:00,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:56:00,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:56:00,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:56:00,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:56:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:01,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:56:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:01,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:56:01,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995573335] [2021-10-13 19:56:01,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995573335] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:56:01,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:56:01,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:56:01,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676048829] [2021-10-13 19:56:01,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:56:01,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:56:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:56:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:56:01,679 INFO L87 Difference]: Start difference. First operand 19648 states and 115241 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:08,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:56:08,499 INFO L93 Difference]: Finished difference Result 28998 states and 156966 transitions. [2021-10-13 19:56:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:56:08,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:56:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:56:08,702 INFO L225 Difference]: With dead ends: 28998 [2021-10-13 19:56:08,702 INFO L226 Difference]: Without dead ends: 28962 [2021-10-13 19:56:08,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 930.7ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:56:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28962 states. [2021-10-13 19:56:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28962 to 19674. [2021-10-13 19:56:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19674 states, 19673 states have (on average 5.859909520662837) internal successors, (115282), 19673 states have internal predecessors, (115282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19674 states to 19674 states and 115282 transitions. [2021-10-13 19:56:09,813 INFO L78 Accepts]: Start accepts. Automaton has 19674 states and 115282 transitions. Word has length 26 [2021-10-13 19:56:09,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:56:09,813 INFO L470 AbstractCegarLoop]: Abstraction has 19674 states and 115282 transitions. [2021-10-13 19:56:09,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 19674 states and 115282 transitions. [2021-10-13 19:56:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:56:10,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:56:10,088 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:56:10,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-13 19:56:10,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:56:10,303 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:56:10,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:56:10,303 INFO L82 PathProgramCache]: Analyzing trace with hash 64201255, now seen corresponding path program 23 times [2021-10-13 19:56:10,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:56:10,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592147346] [2021-10-13 19:56:10,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:56:10,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:56:10,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:56:10,306 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:56:10,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-13 19:56:11,656 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:56:11,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:56:11,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:56:11,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:56:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:11,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:56:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:12,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:56:12,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592147346] [2021-10-13 19:56:12,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592147346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:56:12,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:56:12,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:56:12,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478604712] [2021-10-13 19:56:12,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:56:12,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:56:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:56:12,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:56:12,329 INFO L87 Difference]: Start difference. First operand 19674 states and 115282 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:56:14,303 INFO L93 Difference]: Finished difference Result 30504 states and 165279 transitions. [2021-10-13 19:56:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:56:14,304 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:56:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:56:14,496 INFO L225 Difference]: With dead ends: 30504 [2021-10-13 19:56:14,496 INFO L226 Difference]: Without dead ends: 30504 [2021-10-13 19:56:14,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 465.5ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:56:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30504 states. [2021-10-13 19:56:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30504 to 19674. [2021-10-13 19:56:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19674 states, 19673 states have (on average 5.859909520662837) internal successors, (115282), 19673 states have internal predecessors, (115282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19674 states to 19674 states and 115282 transitions. [2021-10-13 19:56:15,731 INFO L78 Accepts]: Start accepts. Automaton has 19674 states and 115282 transitions. Word has length 26 [2021-10-13 19:56:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:56:15,732 INFO L470 AbstractCegarLoop]: Abstraction has 19674 states and 115282 transitions. [2021-10-13 19:56:15,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 19674 states and 115282 transitions. [2021-10-13 19:56:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:56:15,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:56:15,803 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:56:15,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-13 19:56:16,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:56:16,004 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:56:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:56:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash -380778180, now seen corresponding path program 24 times [2021-10-13 19:56:16,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:56:16,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742092606] [2021-10-13 19:56:16,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:56:16,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:56:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:56:16,006 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:56:16,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-13 19:56:17,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 19:56:17,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:56:17,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:56:17,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:56:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:18,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:56:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:18,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:56:18,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742092606] [2021-10-13 19:56:18,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742092606] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:56:18,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:56:18,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:56:18,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716241508] [2021-10-13 19:56:18,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:56:18,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:56:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:56:18,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:56:18,420 INFO L87 Difference]: Start difference. First operand 19674 states and 115282 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:56:48,010 INFO L93 Difference]: Finished difference Result 30260 states and 165158 transitions. [2021-10-13 19:56:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:56:48,012 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:56:48,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:56:48,173 INFO L225 Difference]: With dead ends: 30260 [2021-10-13 19:56:48,174 INFO L226 Difference]: Without dead ends: 30246 [2021-10-13 19:56:48,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3103.4ms TimeCoverageRelationStatistics Valid=81, Invalid=338, Unknown=1, NotChecked=0, Total=420 [2021-10-13 19:56:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30246 states. [2021-10-13 19:56:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30246 to 19616. [2021-10-13 19:56:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19616 states, 19615 states have (on average 5.860871781799643) internal successors, (114961), 19615 states have internal predecessors, (114961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19616 states to 19616 states and 114961 transitions. [2021-10-13 19:56:49,332 INFO L78 Accepts]: Start accepts. Automaton has 19616 states and 114961 transitions. Word has length 26 [2021-10-13 19:56:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:56:49,333 INFO L470 AbstractCegarLoop]: Abstraction has 19616 states and 114961 transitions. [2021-10-13 19:56:49,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 19616 states and 114961 transitions. [2021-10-13 19:56:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:56:49,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:56:49,406 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:56:49,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-13 19:56:49,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:56:49,607 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:56:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:56:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash 758931604, now seen corresponding path program 25 times [2021-10-13 19:56:49,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:56:49,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693288125] [2021-10-13 19:56:49,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:56:49,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:56:49,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:56:49,610 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:56:49,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-13 19:56:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:56:51,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:56:51,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:56:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:53,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:56:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:53,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:56:53,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693288125] [2021-10-13 19:56:53,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693288125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:56:53,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:56:53,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:56:53,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744723559] [2021-10-13 19:56:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:56:53,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:56:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:56:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-13 19:56:53,646 INFO L87 Difference]: Start difference. First operand 19616 states and 114961 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:57:12,380 INFO L93 Difference]: Finished difference Result 27408 states and 148642 transitions. [2021-10-13 19:57:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:57:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:57:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:57:12,569 INFO L225 Difference]: With dead ends: 27408 [2021-10-13 19:57:12,570 INFO L226 Difference]: Without dead ends: 27288 [2021-10-13 19:57:12,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 11702.5ms TimeCoverageRelationStatistics Valid=119, Invalid=385, Unknown=2, NotChecked=0, Total=506 [2021-10-13 19:57:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27288 states. [2021-10-13 19:57:13,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27288 to 19376. [2021-10-13 19:57:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19376 states, 19375 states have (on average 5.863329032258065) internal successors, (113602), 19375 states have internal predecessors, (113602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19376 states to 19376 states and 113602 transitions. [2021-10-13 19:57:13,711 INFO L78 Accepts]: Start accepts. Automaton has 19376 states and 113602 transitions. Word has length 26 [2021-10-13 19:57:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:57:13,712 INFO L470 AbstractCegarLoop]: Abstraction has 19376 states and 113602 transitions. [2021-10-13 19:57:13,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 19376 states and 113602 transitions. [2021-10-13 19:57:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:57:13,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:57:13,826 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:57:13,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-13 19:57:14,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:57:14,045 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:57:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:57:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1314024188, now seen corresponding path program 26 times [2021-10-13 19:57:14,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:57:14,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414761670] [2021-10-13 19:57:14,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:57:14,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:57:14,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:57:14,048 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:57:14,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-13 19:57:15,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:57:15,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:57:15,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:57:15,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:57:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:18,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:57:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:18,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:57:18,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414761670] [2021-10-13 19:57:18,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414761670] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:57:18,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:57:18,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:57:18,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313304419] [2021-10-13 19:57:18,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:57:18,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:57:18,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:57:18,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-13 19:57:18,341 INFO L87 Difference]: Start difference. First operand 19376 states and 113602 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:31,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:57:31,925 INFO L93 Difference]: Finished difference Result 35860 states and 191409 transitions. [2021-10-13 19:57:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:57:31,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:57:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:57:32,182 INFO L225 Difference]: With dead ends: 35860 [2021-10-13 19:57:32,183 INFO L226 Difference]: Without dead ends: 35860 [2021-10-13 19:57:32,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6867.8ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-13 19:57:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35860 states. [2021-10-13 19:57:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35860 to 20754. [2021-10-13 19:57:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20754 states, 20753 states have (on average 5.930130583530092) internal successors, (123068), 20753 states have internal predecessors, (123068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20754 states to 20754 states and 123068 transitions. [2021-10-13 19:57:33,561 INFO L78 Accepts]: Start accepts. Automaton has 20754 states and 123068 transitions. Word has length 26 [2021-10-13 19:57:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:57:33,561 INFO L470 AbstractCegarLoop]: Abstraction has 20754 states and 123068 transitions. [2021-10-13 19:57:33,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 20754 states and 123068 transitions. [2021-10-13 19:57:33,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:57:33,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:57:33,629 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:57:33,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-13 19:57:33,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:57:33,830 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:57:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:57:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1500199581, now seen corresponding path program 27 times [2021-10-13 19:57:33,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:57:33,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027423316] [2021-10-13 19:57:33,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:57:33,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:57:33,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:57:33,832 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:57:33,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-13 19:57:35,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:57:35,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:57:35,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:57:35,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:57:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:38,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:57:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:38,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:57:38,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027423316] [2021-10-13 19:57:38,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027423316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:57:38,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:57:38,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:57:38,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753094020] [2021-10-13 19:57:38,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:57:38,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:57:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:57:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-13 19:57:38,374 INFO L87 Difference]: Start difference. First operand 20754 states and 123068 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:57:48,405 INFO L93 Difference]: Finished difference Result 32476 states and 174160 transitions. [2021-10-13 19:57:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:57:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:57:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:57:48,788 INFO L225 Difference]: With dead ends: 32476 [2021-10-13 19:57:48,788 INFO L226 Difference]: Without dead ends: 32424 [2021-10-13 19:57:48,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 9760.8ms TimeCoverageRelationStatistics Valid=123, Invalid=427, Unknown=2, NotChecked=0, Total=552 [2021-10-13 19:57:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32424 states. [2021-10-13 19:57:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32424 to 20962. [2021-10-13 19:57:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20962 states, 20961 states have (on average 5.919469490959401) internal successors, (124078), 20961 states have internal predecessors, (124078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20962 states to 20962 states and 124078 transitions. [2021-10-13 19:57:50,473 INFO L78 Accepts]: Start accepts. Automaton has 20962 states and 124078 transitions. Word has length 26 [2021-10-13 19:57:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:57:50,473 INFO L470 AbstractCegarLoop]: Abstraction has 20962 states and 124078 transitions. [2021-10-13 19:57:50,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20962 states and 124078 transitions. [2021-10-13 19:57:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:57:50,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:57:50,568 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:57:50,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-13 19:57:50,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:57:50,784 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:57:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:57:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash 608909573, now seen corresponding path program 28 times [2021-10-13 19:57:50,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:57:50,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529939675] [2021-10-13 19:57:50,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:57:50,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:57:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:57:50,788 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:57:50,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-13 19:57:52,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:57:52,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:57:52,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:57:52,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:57:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:54,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:57:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:54,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:57:54,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529939675] [2021-10-13 19:57:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529939675] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:57:54,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:57:54,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:57:54,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347744076] [2021-10-13 19:57:54,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:57:54,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:57:54,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:57:54,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-13 19:57:54,748 INFO L87 Difference]: Start difference. First operand 20962 states and 124078 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:04,081 INFO L93 Difference]: Finished difference Result 30222 states and 165110 transitions. [2021-10-13 19:58:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:58:04,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:04,471 INFO L225 Difference]: With dead ends: 30222 [2021-10-13 19:58:04,472 INFO L226 Difference]: Without dead ends: 30214 [2021-10-13 19:58:04,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7076.9ms TimeCoverageRelationStatistics Valid=103, Invalid=401, Unknown=2, NotChecked=0, Total=506 [2021-10-13 19:58:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30214 states. [2021-10-13 19:58:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30214 to 20634. [2021-10-13 19:58:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20634 states, 20633 states have (on average 5.912906508990452) internal successors, (122001), 20633 states have internal predecessors, (122001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20634 states to 20634 states and 122001 transitions. [2021-10-13 19:58:05,815 INFO L78 Accepts]: Start accepts. Automaton has 20634 states and 122001 transitions. Word has length 26 [2021-10-13 19:58:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:05,815 INFO L470 AbstractCegarLoop]: Abstraction has 20634 states and 122001 transitions. [2021-10-13 19:58:05,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 20634 states and 122001 transitions. [2021-10-13 19:58:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:05,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:05,909 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:05,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:06,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:58:06,124 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash 930307603, now seen corresponding path program 29 times [2021-10-13 19:58:06,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:06,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800136924] [2021-10-13 19:58:06,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:58:06,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:06,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:06,127 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:58:06,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-13 19:58:07,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:58:07,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:58:07,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:58:07,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:09,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:09,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:09,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800136924] [2021-10-13 19:58:09,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800136924] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:09,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:09,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:58:09,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452721783] [2021-10-13 19:58:09,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:58:09,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:58:09,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:58:09,692 INFO L87 Difference]: Start difference. First operand 20634 states and 122001 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:13,748 INFO L93 Difference]: Finished difference Result 38990 states and 210564 transitions. [2021-10-13 19:58:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:58:13,749 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:13,984 INFO L225 Difference]: With dead ends: 38990 [2021-10-13 19:58:13,985 INFO L226 Difference]: Without dead ends: 38990 [2021-10-13 19:58:13,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2361.6ms TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:58:14,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38990 states. [2021-10-13 19:58:15,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38990 to 22636. [2021-10-13 19:58:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22636 states, 22635 states have (on average 5.993373094764745) internal successors, (135660), 22635 states have internal predecessors, (135660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22636 states to 22636 states and 135660 transitions. [2021-10-13 19:58:15,499 INFO L78 Accepts]: Start accepts. Automaton has 22636 states and 135660 transitions. Word has length 26 [2021-10-13 19:58:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:15,503 INFO L470 AbstractCegarLoop]: Abstraction has 22636 states and 135660 transitions. [2021-10-13 19:58:15,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22636 states and 135660 transitions. [2021-10-13 19:58:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:15,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:15,618 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:15,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:15,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:58:15,830 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:15,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:15,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1664520562, now seen corresponding path program 17 times [2021-10-13 19:58:15,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:15,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882425025] [2021-10-13 19:58:15,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:58:15,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:15,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:15,834 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:58:15,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-13 19:58:17,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:58:17,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:58:17,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:58:17,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:17,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:18,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:18,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882425025] [2021-10-13 19:58:18,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882425025] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:18,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:18,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:58:18,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157695148] [2021-10-13 19:58:18,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:58:18,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:58:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:58:18,413 INFO L87 Difference]: Start difference. First operand 22636 states and 135660 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:24,132 INFO L93 Difference]: Finished difference Result 27718 states and 157110 transitions. [2021-10-13 19:58:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:58:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:24,326 INFO L225 Difference]: With dead ends: 27718 [2021-10-13 19:58:24,326 INFO L226 Difference]: Without dead ends: 27656 [2021-10-13 19:58:24,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1279.5ms TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:58:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27656 states. [2021-10-13 19:58:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27656 to 23938. [2021-10-13 19:58:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23938 states, 23937 states have (on average 5.938588795588419) internal successors, (142152), 23937 states have internal predecessors, (142152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23938 states to 23938 states and 142152 transitions. [2021-10-13 19:58:25,592 INFO L78 Accepts]: Start accepts. Automaton has 23938 states and 142152 transitions. Word has length 26 [2021-10-13 19:58:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:25,593 INFO L470 AbstractCegarLoop]: Abstraction has 23938 states and 142152 transitions. [2021-10-13 19:58:25,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 23938 states and 142152 transitions. [2021-10-13 19:58:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:25,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:25,682 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:25,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:25,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:58:25,883 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:25,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2123076518, now seen corresponding path program 18 times [2021-10-13 19:58:25,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:25,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204577092] [2021-10-13 19:58:25,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:58:25,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:25,886 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:58:25,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-13 19:58:27,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:58:27,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:58:27,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:58:27,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:27,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:28,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:28,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204577092] [2021-10-13 19:58:28,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204577092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:28,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:28,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:58:28,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898959163] [2021-10-13 19:58:28,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:58:28,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:58:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:58:28,287 INFO L87 Difference]: Start difference. First operand 23938 states and 142152 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:36,193 INFO L93 Difference]: Finished difference Result 29280 states and 167397 transitions. [2021-10-13 19:58:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:58:36,194 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:36,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:36,441 INFO L225 Difference]: With dead ends: 29280 [2021-10-13 19:58:36,442 INFO L226 Difference]: Without dead ends: 29280 [2021-10-13 19:58:36,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1355.6ms TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:58:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29280 states. [2021-10-13 19:58:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29280 to 23804. [2021-10-13 19:58:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23804 states, 23803 states have (on average 5.965466537831365) internal successors, (141996), 23803 states have internal predecessors, (141996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23804 states to 23804 states and 141996 transitions. [2021-10-13 19:58:38,084 INFO L78 Accepts]: Start accepts. Automaton has 23804 states and 141996 transitions. Word has length 26 [2021-10-13 19:58:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:38,084 INFO L470 AbstractCegarLoop]: Abstraction has 23804 states and 141996 transitions. [2021-10-13 19:58:38,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 23804 states and 141996 transitions. [2021-10-13 19:58:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:38,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:38,200 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:38,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:38,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:58:38,401 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:38,402 INFO L82 PathProgramCache]: Analyzing trace with hash 299743754, now seen corresponding path program 19 times [2021-10-13 19:58:38,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:38,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354667466] [2021-10-13 19:58:38,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:58:38,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:38,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:38,404 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:58:38,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-13 19:58:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:58:39,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:58:39,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:40,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:41,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:41,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354667466] [2021-10-13 19:58:41,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354667466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:41,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:41,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:58:41,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101045295] [2021-10-13 19:58:41,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:58:41,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:58:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:58:41,375 INFO L87 Difference]: Start difference. First operand 23804 states and 141996 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:45,788 INFO L93 Difference]: Finished difference Result 31872 states and 178613 transitions. [2021-10-13 19:58:45,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:58:45,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:46,012 INFO L225 Difference]: With dead ends: 31872 [2021-10-13 19:58:46,013 INFO L226 Difference]: Without dead ends: 31830 [2021-10-13 19:58:46,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1765.1ms TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:58:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31830 states. [2021-10-13 19:58:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31830 to 24724. [2021-10-13 19:58:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24724 states, 24723 states have (on average 6.007846944141083) internal successors, (148532), 24723 states have internal predecessors, (148532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24724 states to 24724 states and 148532 transitions. [2021-10-13 19:58:47,481 INFO L78 Accepts]: Start accepts. Automaton has 24724 states and 148532 transitions. Word has length 26 [2021-10-13 19:58:47,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:47,481 INFO L470 AbstractCegarLoop]: Abstraction has 24724 states and 148532 transitions. [2021-10-13 19:58:47,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:47,481 INFO L276 IsEmpty]: Start isEmpty. Operand 24724 states and 148532 transitions. [2021-10-13 19:58:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:47,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:47,580 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:47,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:47,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:58:47,781 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1509879284, now seen corresponding path program 20 times [2021-10-13 19:58:47,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:47,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816325610] [2021-10-13 19:58:47,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:58:47,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:47,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:47,786 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:58:47,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-13 19:58:49,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:58:49,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:58:49,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:58:49,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:50,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:51,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:51,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816325610] [2021-10-13 19:58:51,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816325610] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:51,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:51,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 19:58:51,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979815772] [2021-10-13 19:58:51,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:58:51,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:58:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:58:51,038 INFO L87 Difference]: Start difference. First operand 24724 states and 148532 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:59:00,777 INFO L93 Difference]: Finished difference Result 35808 states and 202435 transitions. [2021-10-13 19:59:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:59:00,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:59:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:59:01,142 INFO L225 Difference]: With dead ends: 35808 [2021-10-13 19:59:01,142 INFO L226 Difference]: Without dead ends: 35766 [2021-10-13 19:59:01,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1407.0ms TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:59:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35766 states. [2021-10-13 19:59:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35766 to 26812. [2021-10-13 19:59:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26812 states, 26811 states have (on average 6.056842340830256) internal successors, (162390), 26811 states have internal predecessors, (162390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26812 states to 26812 states and 162390 transitions. [2021-10-13 19:59:02,685 INFO L78 Accepts]: Start accepts. Automaton has 26812 states and 162390 transitions. Word has length 26 [2021-10-13 19:59:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:59:02,686 INFO L470 AbstractCegarLoop]: Abstraction has 26812 states and 162390 transitions. [2021-10-13 19:59:02,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 26812 states and 162390 transitions. [2021-10-13 19:59:02,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:02,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:02,809 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:02,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-13 19:59:03,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:59:03,010 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:03,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:03,011 INFO L82 PathProgramCache]: Analyzing trace with hash -387654364, now seen corresponding path program 21 times [2021-10-13 19:59:03,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:03,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754494086] [2021-10-13 19:59:03,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:59:03,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:03,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:03,014 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:59:03,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-13 19:59:04,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:59:04,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:59:04,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 19:59:04,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:05,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:06,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:06,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754494086] [2021-10-13 19:59:06,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754494086] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:06,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:06,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:59:06,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189200976] [2021-10-13 19:59:06,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:59:06,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:59:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:59:06,321 INFO L87 Difference]: Start difference. First operand 26812 states and 162390 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:59:14,160 INFO L93 Difference]: Finished difference Result 48624 states and 270201 transitions. [2021-10-13 19:59:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:59:14,161 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:59:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:59:14,591 INFO L225 Difference]: With dead ends: 48624 [2021-10-13 19:59:14,591 INFO L226 Difference]: Without dead ends: 48584 [2021-10-13 19:59:14,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 4179.2ms TimeCoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:59:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48584 states. [2021-10-13 19:59:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48584 to 31706. [2021-10-13 19:59:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31706 states, 31705 states have (on average 6.117047784261158) internal successors, (193941), 31705 states have internal predecessors, (193941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31706 states to 31706 states and 193941 transitions. [2021-10-13 19:59:16,835 INFO L78 Accepts]: Start accepts. Automaton has 31706 states and 193941 transitions. Word has length 26 [2021-10-13 19:59:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:59:16,835 INFO L470 AbstractCegarLoop]: Abstraction has 31706 states and 193941 transitions. [2021-10-13 19:59:16,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 31706 states and 193941 transitions. [2021-10-13 19:59:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:16,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:16,955 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:16,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-13 19:59:17,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:59:17,156 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:17,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1656754486, now seen corresponding path program 22 times [2021-10-13 19:59:17,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:17,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852530261] [2021-10-13 19:59:17,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:59:17,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:17,158 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:59:17,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-13 19:59:18,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:59:18,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:59:18,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:59:18,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:19,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:20,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:20,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852530261] [2021-10-13 19:59:20,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852530261] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:20,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:20,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:59:20,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247725475] [2021-10-13 19:59:20,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:59:20,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:59:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:59:20,007 INFO L87 Difference]: Start difference. First operand 31706 states and 193941 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:59:26,503 INFO L93 Difference]: Finished difference Result 44038 states and 248214 transitions. [2021-10-13 19:59:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:59:26,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:59:26,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:59:27,091 INFO L225 Difference]: With dead ends: 44038 [2021-10-13 19:59:27,091 INFO L226 Difference]: Without dead ends: 44038 [2021-10-13 19:59:27,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1613.9ms TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:59:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44038 states. [2021-10-13 19:59:28,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44038 to 31712. [2021-10-13 19:59:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31712 states, 31711 states have (on average 6.103686417962221) internal successors, (193554), 31711 states have internal predecessors, (193554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31712 states to 31712 states and 193554 transitions. [2021-10-13 19:59:29,554 INFO L78 Accepts]: Start accepts. Automaton has 31712 states and 193554 transitions. Word has length 26 [2021-10-13 19:59:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:59:29,554 INFO L470 AbstractCegarLoop]: Abstraction has 31712 states and 193554 transitions. [2021-10-13 19:59:29,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 31712 states and 193554 transitions. [2021-10-13 19:59:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:29,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:29,698 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:29,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-13 19:59:29,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:59:29,901 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:29,901 INFO L82 PathProgramCache]: Analyzing trace with hash -749658564, now seen corresponding path program 23 times [2021-10-13 19:59:29,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:29,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077145895] [2021-10-13 19:59:29,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:59:29,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:29,904 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:59:29,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-13 19:59:31,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:59:31,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:59:31,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:59:31,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:32,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:32,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:32,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077145895] [2021-10-13 19:59:32,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077145895] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:32,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:32,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 19:59:32,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881309912] [2021-10-13 19:59:32,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:59:32,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:32,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:59:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:59:32,988 INFO L87 Difference]: Start difference. First operand 31712 states and 193554 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:59:44,235 INFO L93 Difference]: Finished difference Result 43828 states and 250348 transitions. [2021-10-13 19:59:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:59:44,236 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:59:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:59:44,759 INFO L225 Difference]: With dead ends: 43828 [2021-10-13 19:59:44,759 INFO L226 Difference]: Without dead ends: 43786 [2021-10-13 19:59:44,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1424.6ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:59:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43786 states. [2021-10-13 19:59:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43786 to 31756. [2021-10-13 19:59:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31756 states, 31755 states have (on average 6.112517713745866) internal successors, (194103), 31755 states have internal predecessors, (194103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31756 states to 31756 states and 194103 transitions. [2021-10-13 19:59:47,028 INFO L78 Accepts]: Start accepts. Automaton has 31756 states and 194103 transitions. Word has length 26 [2021-10-13 19:59:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:59:47,029 INFO L470 AbstractCegarLoop]: Abstraction has 31756 states and 194103 transitions. [2021-10-13 19:59:47,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand 31756 states and 194103 transitions. [2021-10-13 19:59:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:47,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:47,195 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:47,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-13 19:59:47,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:59:47,396 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:47,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:47,397 INFO L82 PathProgramCache]: Analyzing trace with hash 221487868, now seen corresponding path program 24 times [2021-10-13 19:59:47,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:47,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501101580] [2021-10-13 19:59:47,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:59:47,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:47,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:47,402 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:59:47,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-13 19:59:49,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:59:49,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:59:49,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:59:49,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:51,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:51,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:51,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501101580] [2021-10-13 19:59:51,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501101580] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:51,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:51,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:59:51,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137537090] [2021-10-13 19:59:51,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:59:51,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:51,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:59:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-13 19:59:51,779 INFO L87 Difference]: Start difference. First operand 31756 states and 194103 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:00:15,463 INFO L93 Difference]: Finished difference Result 37574 states and 218511 transitions. [2021-10-13 20:00:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 20:00:15,464 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:00:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:00:15,999 INFO L225 Difference]: With dead ends: 37574 [2021-10-13 20:00:15,999 INFO L226 Difference]: Without dead ends: 37380 [2021-10-13 20:00:15,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 12855.2ms TimeCoverageRelationStatistics Valid=119, Invalid=385, Unknown=2, NotChecked=0, Total=506 [2021-10-13 20:00:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37380 states. [2021-10-13 20:00:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37380 to 32012. [2021-10-13 20:00:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32012 states, 32011 states have (on average 6.1376089469244945) internal successors, (196471), 32011 states have internal predecessors, (196471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32012 states to 32012 states and 196471 transitions. [2021-10-13 20:00:17,952 INFO L78 Accepts]: Start accepts. Automaton has 32012 states and 196471 transitions. Word has length 26 [2021-10-13 20:00:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:00:17,953 INFO L470 AbstractCegarLoop]: Abstraction has 32012 states and 196471 transitions. [2021-10-13 20:00:17,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 32012 states and 196471 transitions. [2021-10-13 20:00:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:00:18,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:00:18,113 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:00:18,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-13 20:00:18,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:00:18,319 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:00:18,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:00:18,319 INFO L82 PathProgramCache]: Analyzing trace with hash -320424412, now seen corresponding path program 25 times [2021-10-13 20:00:18,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:00:18,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885922065] [2021-10-13 20:00:18,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:00:18,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:00:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:00:18,322 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:00:18,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-13 20:00:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:00:19,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:00:19,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:00:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:20,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:00:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:21,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:00:21,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885922065] [2021-10-13 20:00:21,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885922065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:00:21,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:00:21,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:00:21,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68656050] [2021-10-13 20:00:21,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:00:21,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:00:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:00:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:00:21,260 INFO L87 Difference]: Start difference. First operand 32012 states and 196471 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:00:28,653 INFO L93 Difference]: Finished difference Result 39668 states and 236069 transitions. [2021-10-13 20:00:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 20:00:28,654 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:00:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:00:28,947 INFO L225 Difference]: With dead ends: 39668 [2021-10-13 20:00:28,947 INFO L226 Difference]: Without dead ends: 39410 [2021-10-13 20:00:28,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1468.5ms TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-10-13 20:00:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39410 states. [2021-10-13 20:00:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39410 to 34024. [2021-10-13 20:00:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34024 states, 34023 states have (on average 6.164888457807954) internal successors, (209748), 34023 states have internal predecessors, (209748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:30,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 209748 transitions. [2021-10-13 20:00:30,826 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 209748 transitions. Word has length 26 [2021-10-13 20:00:30,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:00:30,826 INFO L470 AbstractCegarLoop]: Abstraction has 34024 states and 209748 transitions. [2021-10-13 20:00:30,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 209748 transitions. [2021-10-13 20:00:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:00:30,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:00:30,959 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:00:30,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-13 20:00:31,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:00:31,160 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:00:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:00:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash -642047750, now seen corresponding path program 26 times [2021-10-13 20:00:31,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:00:31,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576228117] [2021-10-13 20:00:31,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:00:31,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:00:31,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:00:31,163 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:00:31,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-13 20:00:33,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:00:33,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:00:33,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:00:33,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:00:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:33,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:00:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:34,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:00:34,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576228117] [2021-10-13 20:00:34,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576228117] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:00:34,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:00:34,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:00:34,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383114590] [2021-10-13 20:00:34,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:00:34,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:00:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:00:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:00:34,325 INFO L87 Difference]: Start difference. First operand 34024 states and 209748 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:00:39,680 INFO L93 Difference]: Finished difference Result 51458 states and 296465 transitions. [2021-10-13 20:00:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 20:00:39,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:00:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:00:40,331 INFO L225 Difference]: With dead ends: 51458 [2021-10-13 20:00:40,331 INFO L226 Difference]: Without dead ends: 51018 [2021-10-13 20:00:40,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1293.2ms TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2021-10-13 20:00:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51018 states. [2021-10-13 20:00:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51018 to 37934. [2021-10-13 20:00:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37934 states, 37933 states have (on average 6.217436005588802) internal successors, (235846), 37933 states have internal predecessors, (235846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37934 states to 37934 states and 235846 transitions. [2021-10-13 20:00:42,568 INFO L78 Accepts]: Start accepts. Automaton has 37934 states and 235846 transitions. Word has length 26 [2021-10-13 20:00:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:00:42,568 INFO L470 AbstractCegarLoop]: Abstraction has 37934 states and 235846 transitions. [2021-10-13 20:00:42,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 37934 states and 235846 transitions. [2021-10-13 20:00:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:00:43,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:00:43,132 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:00:43,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-13 20:00:43,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:00:43,347 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:00:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:00:43,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1142996982, now seen corresponding path program 27 times [2021-10-13 20:00:43,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:00:43,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948201755] [2021-10-13 20:00:43,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:00:43,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:00:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:00:43,349 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:00:43,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-13 20:00:45,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:00:45,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:00:45,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:00:45,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:00:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:45,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:00:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:45,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:00:45,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948201755] [2021-10-13 20:00:45,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948201755] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:00:45,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:00:45,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:00:45,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820817256] [2021-10-13 20:00:45,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:00:45,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:00:45,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:00:45,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:00:45,982 INFO L87 Difference]: Start difference. First operand 37934 states and 235846 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:00:56,392 INFO L93 Difference]: Finished difference Result 50556 states and 298390 transitions. [2021-10-13 20:00:56,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 20:00:56,393 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:00:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:00:56,814 INFO L225 Difference]: With dead ends: 50556 [2021-10-13 20:00:56,815 INFO L226 Difference]: Without dead ends: 50514 [2021-10-13 20:00:56,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3671.2ms TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-10-13 20:00:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50514 states. [2021-10-13 20:00:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50514 to 40418. [2021-10-13 20:00:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40418 states, 40417 states have (on average 6.231486750624737) internal successors, (251858), 40417 states have internal predecessors, (251858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40418 states to 40418 states and 251858 transitions. [2021-10-13 20:00:59,574 INFO L78 Accepts]: Start accepts. Automaton has 40418 states and 251858 transitions. Word has length 26 [2021-10-13 20:00:59,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:00:59,574 INFO L470 AbstractCegarLoop]: Abstraction has 40418 states and 251858 transitions. [2021-10-13 20:00:59,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand 40418 states and 251858 transitions. [2021-10-13 20:00:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:00:59,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:00:59,776 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:00:59,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-13 20:00:59,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:00:59,985 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:00:59,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:00:59,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1195472074, now seen corresponding path program 28 times [2021-10-13 20:00:59,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:00:59,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619166389] [2021-10-13 20:00:59,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:00:59,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:00:59,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:00:59,988 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:00:59,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-13 20:01:01,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:01:01,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:01:01,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:01:01,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:01:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:02,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:01:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:03,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:01:03,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619166389] [2021-10-13 20:01:03,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619166389] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:01:03,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:01:03,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:01:03,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457265327] [2021-10-13 20:01:03,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:01:03,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:01:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:01:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:01:03,117 INFO L87 Difference]: Start difference. First operand 40418 states and 251858 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:01:10,270 INFO L93 Difference]: Finished difference Result 55278 states and 318703 transitions. [2021-10-13 20:01:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 20:01:10,270 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:01:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:01:10,708 INFO L225 Difference]: With dead ends: 55278 [2021-10-13 20:01:10,708 INFO L226 Difference]: Without dead ends: 55278 [2021-10-13 20:01:10,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1670.2ms TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2021-10-13 20:01:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55278 states. [2021-10-13 20:01:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55278 to 39512. [2021-10-13 20:01:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39512 states, 39511 states have (on average 6.216749765887981) internal successors, (245630), 39511 states have internal predecessors, (245630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39512 states to 39512 states and 245630 transitions. [2021-10-13 20:01:13,459 INFO L78 Accepts]: Start accepts. Automaton has 39512 states and 245630 transitions. Word has length 26 [2021-10-13 20:01:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:01:13,459 INFO L470 AbstractCegarLoop]: Abstraction has 39512 states and 245630 transitions. [2021-10-13 20:01:13,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 39512 states and 245630 transitions. [2021-10-13 20:01:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:01:13,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:01:13,670 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:01:13,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-13 20:01:13,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:01:13,871 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:01:13,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:01:13,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1620502940, now seen corresponding path program 29 times [2021-10-13 20:01:13,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:01:13,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864439768] [2021-10-13 20:01:13,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:01:13,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:01:13,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:01:13,874 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:01:13,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-13 20:01:15,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:01:15,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:01:15,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:01:15,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:01:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:18,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:01:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:19,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:01:19,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864439768] [2021-10-13 20:01:19,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864439768] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:01:19,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:01:19,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:01:19,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470772499] [2021-10-13 20:01:19,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:01:19,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:01:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:01:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-10-13 20:01:19,395 INFO L87 Difference]: Start difference. First operand 39512 states and 245630 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:01:37,274 INFO L93 Difference]: Finished difference Result 47590 states and 283524 transitions. [2021-10-13 20:01:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:01:37,275 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:01:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:01:37,654 INFO L225 Difference]: With dead ends: 47590 [2021-10-13 20:01:37,654 INFO L226 Difference]: Without dead ends: 47474 [2021-10-13 20:01:37,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 9936.3ms TimeCoverageRelationStatistics Valid=112, Invalid=438, Unknown=2, NotChecked=0, Total=552 [2021-10-13 20:01:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47474 states. [2021-10-13 20:01:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47474 to 38754. [2021-10-13 20:01:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38754 states, 38753 states have (on average 6.201481175650917) internal successors, (240326), 38753 states have internal predecessors, (240326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38754 states to 38754 states and 240326 transitions. [2021-10-13 20:01:40,132 INFO L78 Accepts]: Start accepts. Automaton has 38754 states and 240326 transitions. Word has length 26 [2021-10-13 20:01:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:01:40,132 INFO L470 AbstractCegarLoop]: Abstraction has 38754 states and 240326 transitions. [2021-10-13 20:01:40,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 38754 states and 240326 transitions. [2021-10-13 20:01:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:01:40,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:01:40,340 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:01:40,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-13 20:01:40,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:01:40,554 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:01:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:01:40,555 INFO L82 PathProgramCache]: Analyzing trace with hash -871680918, now seen corresponding path program 30 times [2021-10-13 20:01:40,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:01:40,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52185996] [2021-10-13 20:01:40,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:01:40,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:01:40,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:01:40,558 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:01:40,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-13 20:01:42,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 20:01:42,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:01:42,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:01:42,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:01:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:42,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:01:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:44,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:01:44,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52185996] [2021-10-13 20:01:44,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52185996] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:01:44,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:01:44,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:01:44,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379603892] [2021-10-13 20:01:44,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:01:44,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:01:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:01:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:01:44,147 INFO L87 Difference]: Start difference. First operand 38754 states and 240326 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:01,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:02:01,503 INFO L93 Difference]: Finished difference Result 49540 states and 294469 transitions. [2021-10-13 20:02:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 20:02:01,504 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:02:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:02:01,834 INFO L225 Difference]: With dead ends: 49540 [2021-10-13 20:02:01,834 INFO L226 Difference]: Without dead ends: 49504 [2021-10-13 20:02:01,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2436.2ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-13 20:02:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49504 states. [2021-10-13 20:02:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49504 to 40844. [2021-10-13 20:02:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40844 states, 40843 states have (on average 6.222730945327228) internal successors, (254155), 40843 states have internal predecessors, (254155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40844 states to 40844 states and 254155 transitions. [2021-10-13 20:02:04,494 INFO L78 Accepts]: Start accepts. Automaton has 40844 states and 254155 transitions. Word has length 26 [2021-10-13 20:02:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:02:04,495 INFO L470 AbstractCegarLoop]: Abstraction has 40844 states and 254155 transitions. [2021-10-13 20:02:04,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 40844 states and 254155 transitions. [2021-10-13 20:02:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:02:04,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:02:04,689 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:02:04,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-13 20:02:04,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:02:04,890 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:02:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:02:04,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1763704100, now seen corresponding path program 31 times [2021-10-13 20:02:04,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:02:04,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340152516] [2021-10-13 20:02:04,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:02:04,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:02:04,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:02:04,893 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:02:04,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-13 20:02:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:02:06,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:02:06,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:02:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:02:06,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:02:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:02:07,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:02:07,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340152516] [2021-10-13 20:02:07,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340152516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:02:07,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:02:07,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:02:07,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322389258] [2021-10-13 20:02:07,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:02:07,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:02:07,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:02:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:02:07,775 INFO L87 Difference]: Start difference. First operand 40844 states and 254155 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:12,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:02:12,378 INFO L93 Difference]: Finished difference Result 53644 states and 324929 transitions. [2021-10-13 20:02:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 20:02:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:02:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:02:12,824 INFO L225 Difference]: With dead ends: 53644 [2021-10-13 20:02:12,824 INFO L226 Difference]: Without dead ends: 53374 [2021-10-13 20:02:12,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1462.4ms TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2021-10-13 20:02:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53374 states. [2021-10-13 20:02:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53374 to 45672. [2021-10-13 20:02:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45672 states, 45671 states have (on average 6.250968886164086) internal successors, (285488), 45671 states have internal predecessors, (285488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45672 states to 45672 states and 285488 transitions. [2021-10-13 20:02:15,664 INFO L78 Accepts]: Start accepts. Automaton has 45672 states and 285488 transitions. Word has length 26 [2021-10-13 20:02:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:02:15,664 INFO L470 AbstractCegarLoop]: Abstraction has 45672 states and 285488 transitions. [2021-10-13 20:02:15,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 45672 states and 285488 transitions. [2021-10-13 20:02:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:02:15,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:02:15,921 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:02:15,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-13 20:02:16,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:02:16,122 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:02:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:02:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash -108096678, now seen corresponding path program 32 times [2021-10-13 20:02:16,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:02:16,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126424102] [2021-10-13 20:02:16,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:02:16,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:02:16,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:02:16,126 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:02:16,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-13 20:02:17,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:02:17,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:02:17,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:02:17,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:02:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:02:18,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:02:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:02:19,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:02:19,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126424102] [2021-10-13 20:02:19,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126424102] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:02:19,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:02:19,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:02:19,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852256409] [2021-10-13 20:02:19,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:02:19,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:02:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:02:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:02:19,885 INFO L87 Difference]: Start difference. First operand 45672 states and 285488 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:02:35,925 INFO L93 Difference]: Finished difference Result 71874 states and 409993 transitions. [2021-10-13 20:02:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 20:02:35,926 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:02:35,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:02:36,925 INFO L225 Difference]: With dead ends: 71874 [2021-10-13 20:02:36,925 INFO L226 Difference]: Without dead ends: 71862 [2021-10-13 20:02:36,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 5652.7ms TimeCoverageRelationStatistics Valid=371, Invalid=1351, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 20:02:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71862 states. [2021-10-13 20:02:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71862 to 47824. [2021-10-13 20:02:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47824 states, 47823 states have (on average 6.272170294628108) internal successors, (299954), 47823 states have internal predecessors, (299954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47824 states to 47824 states and 299954 transitions. [2021-10-13 20:02:40,689 INFO L78 Accepts]: Start accepts. Automaton has 47824 states and 299954 transitions. Word has length 26 [2021-10-13 20:02:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:02:40,689 INFO L470 AbstractCegarLoop]: Abstraction has 47824 states and 299954 transitions. [2021-10-13 20:02:40,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 47824 states and 299954 transitions. [2021-10-13 20:02:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:02:40,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:02:40,895 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:02:40,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-13 20:02:41,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:02:41,109 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:02:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:02:41,109 INFO L82 PathProgramCache]: Analyzing trace with hash 509997612, now seen corresponding path program 30 times [2021-10-13 20:02:41,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:02:41,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144184184] [2021-10-13 20:02:41,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:02:41,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:02:41,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:02:41,112 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:02:41,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-13 20:02:43,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 20:02:43,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:02:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:02:43,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:02:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:02:43,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:02:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:02:44,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:02:44,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144184184] [2021-10-13 20:02:44,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144184184] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:02:44,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:02:44,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:02:44,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806788445] [2021-10-13 20:02:44,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:02:44,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:02:44,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:02:44,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:02:44,157 INFO L87 Difference]: Start difference. First operand 47824 states and 299954 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:02:55,592 INFO L93 Difference]: Finished difference Result 85750 states and 496259 transitions. [2021-10-13 20:02:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 20:02:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:02:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:02:56,766 INFO L225 Difference]: With dead ends: 85750 [2021-10-13 20:02:56,766 INFO L226 Difference]: Without dead ends: 85750 [2021-10-13 20:02:56,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 906.2ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:02:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85750 states. [2021-10-13 20:02:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85750 to 50632. [2021-10-13 20:02:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50632 states, 50631 states have (on average 6.330054709565286) internal successors, (320497), 50631 states have internal predecessors, (320497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:03:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50632 states to 50632 states and 320497 transitions. [2021-10-13 20:03:00,529 INFO L78 Accepts]: Start accepts. Automaton has 50632 states and 320497 transitions. Word has length 26 [2021-10-13 20:03:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:03:00,530 INFO L470 AbstractCegarLoop]: Abstraction has 50632 states and 320497 transitions. [2021-10-13 20:03:00,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:03:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 50632 states and 320497 transitions. [2021-10-13 20:03:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:03:00,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:03:00,735 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:03:00,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-13 20:03:00,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:03:00,943 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:03:00,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:03:00,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1986467499, now seen corresponding path program 31 times [2021-10-13 20:03:00,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:03:00,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406636286] [2021-10-13 20:03:00,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:03:00,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:03:00,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:03:00,945 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:03:00,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-13 20:03:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:03:03,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:03:03,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:03:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:03:03,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:03:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:03:03,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:03:03,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406636286] [2021-10-13 20:03:03,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406636286] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:03:03,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:03:03,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:03:03,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113577121] [2021-10-13 20:03:03,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:03:03,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:03:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:03:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:03:03,697 INFO L87 Difference]: Start difference. First operand 50632 states and 320497 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-13 20:03:05,740 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:03:05,741 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:03:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 20:03:06,360 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:03:06,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-13 20:03:06,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:03:06,563 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). [2021-10-13 20:03:06,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:03:06,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:03:06,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:03:06,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:03:06,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:03:06,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:03:06,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:03:06,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:03:06,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:03:06,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:03:06,567 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 20:03:06,567 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 20:03:06,567 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 20:03:06,567 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 20:03:06,567 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 20:03:06,567 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 20:03:06,567 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:03:06,568 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:03:06,568 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:03:06,568 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 20:03:06,568 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 20:03:06,585 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:03:06,585 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:03:06,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:03:06 BasicIcfg [2021-10-13 20:03:06,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:03:06,600 INFO L168 Benchmark]: Toolchain (without parser) took 779626.68 ms. Allocated memory was 172.0 MB in the beginning and 6.5 GB in the end (delta: 6.4 GB). Free memory was 147.4 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-10-13 20:03:06,601 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 172.0 MB. Free memory is still 147.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:03:06,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.47 ms. Allocated memory is still 172.0 MB. Free memory was 147.1 MB in the beginning and 136.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:06,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.82 ms. Allocated memory is still 172.0 MB. Free memory was 136.1 MB in the beginning and 134.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:06,602 INFO L168 Benchmark]: Boogie Preprocessor took 37.44 ms. Allocated memory is still 172.0 MB. Free memory was 134.3 MB in the beginning and 133.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:06,602 INFO L168 Benchmark]: RCFGBuilder took 763.87 ms. Allocated memory is still 172.0 MB. Free memory was 132.8 MB in the beginning and 151.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:06,603 INFO L168 Benchmark]: TraceAbstraction took 778426.74 ms. Allocated memory was 172.0 MB in the beginning and 6.5 GB in the end (delta: 6.4 GB). Free memory was 151.3 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-10-13 20:03:06,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 172.0 MB. Free memory is still 147.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.47 ms. Allocated memory is still 172.0 MB. Free memory was 147.1 MB in the beginning and 136.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.82 ms. Allocated memory is still 172.0 MB. Free memory was 136.1 MB in the beginning and 134.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.44 ms. Allocated memory is still 172.0 MB. Free memory was 134.3 MB in the beginning and 133.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 763.87 ms. Allocated memory is still 172.0 MB. Free memory was 132.8 MB in the beginning and 151.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 778426.74 ms. Allocated memory was 172.0 MB in the beginning and 6.5 GB in the end (delta: 6.4 GB). Free memory was 151.3 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21962.6ms, 144 PlacesBefore, 56 PlacesAfterwards, 141 TransitionsBefore, 47 TransitionsAfterwards, 1960 CoEnabledTransitionPairs, 7 FixpointIterations, 68 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 136 TotalNumberOfCompositions, 2465 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2465, positive: 2465, positive conditional: 0, positive unconditional: 2465, 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: 1267, positive: 1267, positive conditional: 0, positive unconditional: 1267, 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: 1267, positive: 1267, positive conditional: 0, positive unconditional: 1267, 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: 2465, positive: 1198, positive conditional: 0, positive unconditional: 1198, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1267, unknown conditional: 0, unknown unconditional: 1267] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (50632states) and FLOYD_HOARE automaton (currently 7 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 160 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 778120.4ms, OverallIterations: 96, TraceHistogramMax: 3, EmptinessCheckTime: 6525.0ms, AutomataDifference: 468130.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22126.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6722 SDtfs, 18953 SDslu, 36987 SDs, 0 SdLazy, 33068 SolverSat, 1257 SolverUnsat, 65 SolverUnknown, 0 SolverNotchecked, 311813.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4766 GetRequests, 3334 SyntacticMatches, 1 SemanticMatches, 1431 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 163034.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=50632occurred in iteration=95, InterpolantAutomatonStates: 1371, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 70071.6ms AutomataMinimizationTime, 95 MinimizatonAttempts, 421718 StatesRemovedByMinimization, 85 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 892.3ms SsaConstructionTime, 14496.0ms SatisfiabilityAnalysisTime, 103527.2ms InterpolantComputationTime, 2210 NumberOfCodeBlocks, 2210 NumberOfCodeBlocksAsserted, 187 NumberOfCheckSat, 4228 ConstructedInterpolants, 562 QuantifiedInterpolants, 44958 SizeOfPredicates, 465 NumberOfNonLiveVariables, 10847 ConjunctsInSsa, 858 ConjunctsInUnsatCore, 192 InterpolantComputations, 24 PerfectInterpolantSequences, 172/1006 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown