/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:58:09,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:58:09,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:58:09,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:58:09,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 17:58:09,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 17:58:09,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 17:58:09,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 17:58:09,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 17:58:09,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 17:58:09,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 17:58:09,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 17:58:09,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 17:58:09,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 17:58:09,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 17:58:09,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 17:58:09,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 17:58:09,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 17:58:09,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 17:58:09,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 17:58:09,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 17:58:09,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 17:58:09,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 17:58:09,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 17:58:09,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 17:58:09,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:58:09,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:58:09,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:58:09,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:58:09,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:58:09,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:58:09,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:58:09,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:58:09,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:58:09,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:58:09,307 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:58:09,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:58:09,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:58:09,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:58:09,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:58:09,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:58:09,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:58:09,309 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:58:09,309 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:58:09,310 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:58:09,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:58:09,310 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:58:09,310 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:58:09,310 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:58:09,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:58:09,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:58:09,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:58:09,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:58:09,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:58:09,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:58:09,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:58:09,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:58:09,312 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:58:09,313 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:58:09,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:58:09,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:58:09,313 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:58:09,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:58:09,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:58:09,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:58:09,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:58:09,754 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:58:09,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2021-10-08 17:58:09,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/716601600/7055aa8e0b364fc7a5f215e9a710b571/FLAGaf41315e8 [2021-10-08 17:58:10,536 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:58:10,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2021-10-08 17:58:10,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/716601600/7055aa8e0b364fc7a5f215e9a710b571/FLAGaf41315e8 [2021-10-08 17:58:10,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/716601600/7055aa8e0b364fc7a5f215e9a710b571 [2021-10-08 17:58:10,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:58:10,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:58:10,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:58:10,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:58:10,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:58:10,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:58:10" (1/1) ... [2021-10-08 17:58:10,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3753b147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:10, skipping insertion in model container [2021-10-08 17:58:10,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:58:10" (1/1) ... [2021-10-08 17:58:10,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:58:10,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:58:11,258 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2485,2498] [2021-10-08 17:58:11,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:58:11,287 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:58:11,345 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2485,2498] [2021-10-08 17:58:11,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:58:11,374 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:58:11,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11 WrapperNode [2021-10-08 17:58:11,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:58:11,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:58:11,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:58:11,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:58:11,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:58:11,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:58:11,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:58:11,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:58:11,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:58:11,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:58:11,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:58:11,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:58:11,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (1/1) ... [2021-10-08 17:58:11,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:58:11,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:58:11,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:58:11,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:58:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:58:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:58:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:58:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:58:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:58:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:58:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:58:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 17:58:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 17:58:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:58:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:58:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:58:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:58:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:58:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:58:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:58:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:58:11,684 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:58:12,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:58:12,332 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-08 17:58:12,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:58:12 BoogieIcfgContainer [2021-10-08 17:58:12,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:58:12,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:58:12,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:58:12,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:58:12,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:58:10" (1/3) ... [2021-10-08 17:58:12,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f61ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:58:12, skipping insertion in model container [2021-10-08 17:58:12,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:58:11" (2/3) ... [2021-10-08 17:58:12,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f61ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:58:12, skipping insertion in model container [2021-10-08 17:58:12,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:58:12" (3/3) ... [2021-10-08 17:58:12,348 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2021-10-08 17:58:12,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:58:12,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-08 17:58:12,355 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:58:12,398 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,399 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,399 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,399 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,400 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,400 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,401 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,401 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,401 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,402 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,402 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,402 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,402 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,402 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,403 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,404 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,404 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,404 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,404 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,405 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,405 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,405 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,405 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,405 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,406 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,406 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,406 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,406 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,408 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,408 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,408 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,408 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,408 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,409 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,409 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,409 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,410 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,410 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,410 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,410 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,411 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,412 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,412 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,412 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,412 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,412 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,413 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,413 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,413 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,413 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,414 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,414 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,414 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,414 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,415 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,415 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,415 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,415 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,416 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,416 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,416 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,416 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,417 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,417 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,417 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,417 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,418 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,418 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,421 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,421 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,422 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,422 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,422 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,422 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,432 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,439 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,440 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,440 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,440 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,440 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,440 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,449 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,454 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,454 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,455 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,457 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:58:12,475 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 17:58:12,571 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:58:12,587 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:58:12,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-08 17:58:12,620 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:58:12,633 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 145 transitions, 322 flow [2021-10-08 17:58:12,639 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 145 transitions, 322 flow [2021-10-08 17:58:12,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 145 transitions, 322 flow [2021-10-08 17:58:12,753 INFO L129 PetriNetUnfolder]: 10/141 cut-off events. [2021-10-08 17:58:12,754 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 17:58:12,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 141 events. 10/141 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 161 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2021-10-08 17:58:12,770 INFO L116 LiptonReduction]: Number of co-enabled transitions 3160 [2021-10-08 17:58:28,982 INFO L131 LiptonReduction]: Checked pairs total: 3502 [2021-10-08 17:58:28,983 INFO L133 LiptonReduction]: Total number of compositions: 132 [2021-10-08 17:58:28,993 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 51 transitions, 134 flow [2021-10-08 17:58:29,052 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:58:29,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:29,064 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:58:29,065 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:29,071 INFO L82 PathProgramCache]: Analyzing trace with hash 573, now seen corresponding path program 1 times [2021-10-08 17:58:29,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:29,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981084076] [2021-10-08 17:58:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:29,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:29,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:29,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:29,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:58:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:29,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:58:29,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:29,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:29,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:29,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981084076] [2021-10-08 17:58:29,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981084076] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:29,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:29,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:58:29,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819557358] [2021-10-08 17:58:29,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:58:29,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:58:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:58:29,228 INFO L87 Difference]: Start difference. First operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:29,279 INFO L93 Difference]: Finished difference Result 640 states and 2671 transitions. [2021-10-08 17:58:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:58:29,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 17:58:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:29,310 INFO L225 Difference]: With dead ends: 640 [2021-10-08 17:58:29,310 INFO L226 Difference]: Without dead ends: 640 [2021-10-08 17:58:29,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:58:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-08 17:58:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-10-08 17:58:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 625 states have (on average 4.2736) internal successors, (2671), 639 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2671 transitions. [2021-10-08 17:58:29,436 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2671 transitions. Word has length 1 [2021-10-08 17:58:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:29,437 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2671 transitions. [2021-10-08 17:58:29,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2671 transitions. [2021-10-08 17:58:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:58:29,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:29,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:58:29,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 17:58:29,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:29,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:29,649 INFO L82 PathProgramCache]: Analyzing trace with hash 562766, now seen corresponding path program 1 times [2021-10-08 17:58:29,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:29,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390839232] [2021-10-08 17:58:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:29,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:29,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:29,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:29,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:58:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:29,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:29,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:30,107 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:58:30,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 94 treesize of output 137 [2021-10-08 17:58:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:34,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:34,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:34,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390839232] [2021-10-08 17:58:34,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390839232] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:34,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:34,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:34,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107418334] [2021-10-08 17:58:34,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:34,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:34,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:34,346 INFO L87 Difference]: Start difference. First operand 640 states and 2671 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:34,445 INFO L93 Difference]: Finished difference Result 610 states and 2557 transitions. [2021-10-08 17:58:34,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:34,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:58:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:34,455 INFO L225 Difference]: With dead ends: 610 [2021-10-08 17:58:34,455 INFO L226 Difference]: Without dead ends: 610 [2021-10-08 17:58:34,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-08 17:58:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-10-08 17:58:34,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 597 states have (on average 4.283082077051926) internal successors, (2557), 609 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2557 transitions. [2021-10-08 17:58:34,489 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2557 transitions. Word has length 3 [2021-10-08 17:58:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:34,490 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 2557 transitions. [2021-10-08 17:58:34,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2557 transitions. [2021-10-08 17:58:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:58:34,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:34,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:58:34,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:34,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:34,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash 562767, now seen corresponding path program 1 times [2021-10-08 17:58:34,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:34,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554438161] [2021-10-08 17:58:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:34,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:34,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:34,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:34,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:58:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:34,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:58:34,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:35,000 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-08 17:58:35,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 76 [2021-10-08 17:58:35,022 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 124 treesize of output 122 [2021-10-08 17:58:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:35,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:35,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:35,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554438161] [2021-10-08 17:58:35,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554438161] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:35,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:35,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:35,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361803958] [2021-10-08 17:58:35,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:35,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:35,825 INFO L87 Difference]: Start difference. First operand 610 states and 2557 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:35,905 INFO L93 Difference]: Finished difference Result 580 states and 2443 transitions. [2021-10-08 17:58:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:35,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:58:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:35,914 INFO L225 Difference]: With dead ends: 580 [2021-10-08 17:58:35,915 INFO L226 Difference]: Without dead ends: 580 [2021-10-08 17:58:35,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-08 17:58:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-10-08 17:58:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 569 states have (on average 4.293497363796134) internal successors, (2443), 579 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2443 transitions. [2021-10-08 17:58:35,946 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2443 transitions. Word has length 3 [2021-10-08 17:58:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:35,946 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 2443 transitions. [2021-10-08 17:58:35,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2443 transitions. [2021-10-08 17:58:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:58:35,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:35,948 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:58:35,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:36,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:36,163 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:36,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:36,164 INFO L82 PathProgramCache]: Analyzing trace with hash 540832988, now seen corresponding path program 1 times [2021-10-08 17:58:36,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:36,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499506208] [2021-10-08 17:58:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:36,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:36,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:36,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:36,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:58:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:36,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:58:36,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:36,456 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-08 17:58:36,457 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 48 treesize of output 80 [2021-10-08 17:58:36,464 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 210 treesize of output 202 [2021-10-08 17:58:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:37,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:37,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:37,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499506208] [2021-10-08 17:58:37,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499506208] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:37,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:37,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:37,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502748251] [2021-10-08 17:58:37,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:37,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:37,128 INFO L87 Difference]: Start difference. First operand 580 states and 2443 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:37,215 INFO L93 Difference]: Finished difference Result 562 states and 2389 transitions. [2021-10-08 17:58:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:37,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:58:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:37,225 INFO L225 Difference]: With dead ends: 562 [2021-10-08 17:58:37,225 INFO L226 Difference]: Without dead ends: 562 [2021-10-08 17:58:37,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-08 17:58:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-08 17:58:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 553 states have (on average 4.320072332730561) internal successors, (2389), 561 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 2389 transitions. [2021-10-08 17:58:37,255 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 2389 transitions. Word has length 5 [2021-10-08 17:58:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:37,256 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 2389 transitions. [2021-10-08 17:58:37,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 2389 transitions. [2021-10-08 17:58:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:58:37,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:37,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:58:37,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:37,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:37,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash 540832989, now seen corresponding path program 1 times [2021-10-08 17:58:37,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:37,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818241959] [2021-10-08 17:58:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:37,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:37,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:37,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:37,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:58:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:37,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:37,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:37,813 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:58:37,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 1279 treesize of output 1292 [2021-10-08 17:58:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:45,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:45,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818241959] [2021-10-08 17:58:45,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818241959] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:45,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:45,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:45,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252088303] [2021-10-08 17:58:45,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:45,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:45,961 INFO L87 Difference]: Start difference. First operand 562 states and 2389 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:46,047 INFO L93 Difference]: Finished difference Result 544 states and 2335 transitions. [2021-10-08 17:58:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:46,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:58:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:46,055 INFO L225 Difference]: With dead ends: 544 [2021-10-08 17:58:46,055 INFO L226 Difference]: Without dead ends: 544 [2021-10-08 17:58:46,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-08 17:58:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-10-08 17:58:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 4.348230912476723) internal successors, (2335), 543 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2335 transitions. [2021-10-08 17:58:46,080 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2335 transitions. Word has length 5 [2021-10-08 17:58:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:46,081 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 2335 transitions. [2021-10-08 17:58:46,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2335 transitions. [2021-10-08 17:58:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:58:46,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:46,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:46,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:46,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:46,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash 49473716, now seen corresponding path program 1 times [2021-10-08 17:58:46,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:46,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027222690] [2021-10-08 17:58:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:46,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:46,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:46,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:46,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:58:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:46,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:58:46,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:46,602 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:58:46,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 17:58:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:47,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:47,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:47,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027222690] [2021-10-08 17:58:47,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027222690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:47,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:47,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:58:47,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043881829] [2021-10-08 17:58:47,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:58:47,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:58:47,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:58:47,195 INFO L87 Difference]: Start difference. First operand 544 states and 2335 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:47,241 INFO L93 Difference]: Finished difference Result 514 states and 2221 transitions. [2021-10-08 17:58:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:47,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:58:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:47,248 INFO L225 Difference]: With dead ends: 514 [2021-10-08 17:58:47,248 INFO L226 Difference]: Without dead ends: 514 [2021-10-08 17:58:47,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:58:47,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-08 17:58:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2021-10-08 17:58:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 509 states have (on average 4.363457760314342) internal successors, (2221), 513 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 2221 transitions. [2021-10-08 17:58:47,272 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 2221 transitions. Word has length 7 [2021-10-08 17:58:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:47,272 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 2221 transitions. [2021-10-08 17:58:47,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 2221 transitions. [2021-10-08 17:58:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:58:47,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:47,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:47,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:47,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:47,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:47,494 INFO L82 PathProgramCache]: Analyzing trace with hash 49473717, now seen corresponding path program 1 times [2021-10-08 17:58:47,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:47,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353660228] [2021-10-08 17:58:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:47,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:47,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:47,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:47,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:58:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:47,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:47,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:47,752 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 17:58:47,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-08 17:58:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:47,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:47,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:47,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353660228] [2021-10-08 17:58:47,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353660228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:47,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:47,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:58:47,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432607363] [2021-10-08 17:58:47,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:47,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:47,939 INFO L87 Difference]: Start difference. First operand 514 states and 2221 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:47,983 INFO L93 Difference]: Finished difference Result 484 states and 2107 transitions. [2021-10-08 17:58:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:47,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:58:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:47,990 INFO L225 Difference]: With dead ends: 484 [2021-10-08 17:58:47,991 INFO L226 Difference]: Without dead ends: 484 [2021-10-08 17:58:47,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-08 17:58:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-08 17:58:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 4.38045738045738) internal successors, (2107), 483 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 2107 transitions. [2021-10-08 17:58:48,015 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 2107 transitions. Word has length 7 [2021-10-08 17:58:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:48,015 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 2107 transitions. [2021-10-08 17:58:48,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 2107 transitions. [2021-10-08 17:58:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:58:48,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:48,017 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:48,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:48,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:48,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:48,231 INFO L82 PathProgramCache]: Analyzing trace with hash 299612852, now seen corresponding path program 1 times [2021-10-08 17:58:48,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:48,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693812049] [2021-10-08 17:58:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:48,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:48,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:48,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:48,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:58:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:48,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:48,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:48,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:48,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:48,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693812049] [2021-10-08 17:58:48,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693812049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:48,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:48,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:58:48,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640632646] [2021-10-08 17:58:48,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:58:48,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:58:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:58:48,534 INFO L87 Difference]: Start difference. First operand 484 states and 2107 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:48,591 INFO L93 Difference]: Finished difference Result 403 states and 1702 transitions. [2021-10-08 17:58:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:48,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 17:58:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:48,597 INFO L225 Difference]: With dead ends: 403 [2021-10-08 17:58:48,597 INFO L226 Difference]: Without dead ends: 403 [2021-10-08 17:58:48,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:58:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-08 17:58:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-08 17:58:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 4.2443890274314215) internal successors, (1702), 402 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1702 transitions. [2021-10-08 17:58:48,622 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1702 transitions. Word has length 9 [2021-10-08 17:58:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:48,623 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1702 transitions. [2021-10-08 17:58:48,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1702 transitions. [2021-10-08 17:58:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:58:48,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:48,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:48,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:48,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:48,842 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:48,843 INFO L82 PathProgramCache]: Analyzing trace with hash 299612853, now seen corresponding path program 1 times [2021-10-08 17:58:48,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:48,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264762269] [2021-10-08 17:58:48,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:48,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:48,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:48,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:48,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:58:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:48,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:58:48,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:49,175 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 17:58:49,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 17:58:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:49,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:49,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:49,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264762269] [2021-10-08 17:58:49,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264762269] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:49,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:49,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 17:58:49,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019797332] [2021-10-08 17:58:49,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:58:49,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:58:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:58:49,684 INFO L87 Difference]: Start difference. First operand 403 states and 1702 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:49,742 INFO L93 Difference]: Finished difference Result 322 states and 1297 transitions. [2021-10-08 17:58:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 17:58:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:49,747 INFO L225 Difference]: With dead ends: 322 [2021-10-08 17:58:49,747 INFO L226 Difference]: Without dead ends: 322 [2021-10-08 17:58:49,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:58:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-08 17:58:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-08 17:58:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1297 transitions. [2021-10-08 17:58:49,762 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1297 transitions. Word has length 9 [2021-10-08 17:58:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:49,762 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1297 transitions. [2021-10-08 17:58:49,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1297 transitions. [2021-10-08 17:58:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 17:58:49,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:49,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:49,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:49,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:49,980 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:49,981 INFO L82 PathProgramCache]: Analyzing trace with hash 954534271, now seen corresponding path program 1 times [2021-10-08 17:58:49,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:49,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725659683] [2021-10-08 17:58:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:49,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:49,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:49,984 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:49,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:58:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:50,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:58:50,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:50,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:50,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:50,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725659683] [2021-10-08 17:58:50,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725659683] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:50,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:50,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:58:50,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754361508] [2021-10-08 17:58:50,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:58:50,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:50,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:58:50,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:58:50,239 INFO L87 Difference]: Start difference. First operand 322 states and 1297 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:50,268 INFO L93 Difference]: Finished difference Result 609 states and 2288 transitions. [2021-10-08 17:58:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:58:50,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 17:58:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:50,275 INFO L225 Difference]: With dead ends: 609 [2021-10-08 17:58:50,275 INFO L226 Difference]: Without dead ends: 554 [2021-10-08 17:58:50,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:58:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-08 17:58:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2021-10-08 17:58:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 3.815551537070524) internal successors, (2110), 553 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2110 transitions. [2021-10-08 17:58:50,301 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2110 transitions. Word has length 25 [2021-10-08 17:58:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:50,302 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 2110 transitions. [2021-10-08 17:58:50,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2110 transitions. [2021-10-08 17:58:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:58:50,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:50,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:50,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:50,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:50,535 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:50,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1655767033, now seen corresponding path program 1 times [2021-10-08 17:58:50,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:50,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308685331] [2021-10-08 17:58:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:50,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:50,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:50,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:50,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:58:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:50,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:50,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:50,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:50,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:50,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308685331] [2021-10-08 17:58:50,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308685331] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:50,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:50,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-08 17:58:50,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587949904] [2021-10-08 17:58:50,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:58:50,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:58:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:50,779 INFO L87 Difference]: Start difference. First operand 554 states and 2110 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:50,901 INFO L93 Difference]: Finished difference Result 640 states and 2474 transitions. [2021-10-08 17:58:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:50,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:58:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:50,909 INFO L225 Difference]: With dead ends: 640 [2021-10-08 17:58:50,909 INFO L226 Difference]: Without dead ends: 640 [2021-10-08 17:58:50,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-08 17:58:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-10-08 17:58:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 3.871674491392801) internal successors, (2474), 639 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2474 transitions. [2021-10-08 17:58:50,936 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2474 transitions. Word has length 26 [2021-10-08 17:58:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:50,936 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2474 transitions. [2021-10-08 17:58:50,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2474 transitions. [2021-10-08 17:58:50,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:58:50,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:50,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:50,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:51,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:51,152 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash -801208945, now seen corresponding path program 2 times [2021-10-08 17:58:51,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:51,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746431278] [2021-10-08 17:58:51,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:51,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:51,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:51,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:51,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:58:51,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:58:51,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:51,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:58:51,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:51,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:51,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:51,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746431278] [2021-10-08 17:58:51,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746431278] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:58:51,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:58:51,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-10-08 17:58:51,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931570871] [2021-10-08 17:58:51,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:51,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:58:51,528 INFO L87 Difference]: Start difference. First operand 640 states and 2474 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:51,662 INFO L93 Difference]: Finished difference Result 736 states and 2880 transitions. [2021-10-08 17:58:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:58:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:51,671 INFO L225 Difference]: With dead ends: 736 [2021-10-08 17:58:51,672 INFO L226 Difference]: Without dead ends: 736 [2021-10-08 17:58:51,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:58:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-08 17:58:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2021-10-08 17:58:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 3.9183673469387754) internal successors, (2880), 735 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2880 transitions. [2021-10-08 17:58:51,702 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2880 transitions. Word has length 26 [2021-10-08 17:58:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:51,703 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 2880 transitions. [2021-10-08 17:58:51,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2880 transitions. [2021-10-08 17:58:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:58:51,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:51,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:51,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:51,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:51,922 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:51,923 INFO L82 PathProgramCache]: Analyzing trace with hash 590753084, now seen corresponding path program 1 times [2021-10-08 17:58:51,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:51,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753490948] [2021-10-08 17:58:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:51,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:51,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:51,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:51,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:58:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:52,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:52,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:52,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:52,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:52,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753490948] [2021-10-08 17:58:52,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753490948] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:52,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:52,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-08 17:58:52,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782055536] [2021-10-08 17:58:52,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:52,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:52,211 INFO L87 Difference]: Start difference. First operand 736 states and 2880 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:52,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:52,304 INFO L93 Difference]: Finished difference Result 986 states and 3690 transitions. [2021-10-08 17:58:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:52,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:58:52,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:52,314 INFO L225 Difference]: With dead ends: 986 [2021-10-08 17:58:52,314 INFO L226 Difference]: Without dead ends: 812 [2021-10-08 17:58:52,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-08 17:58:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 798. [2021-10-08 17:58:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 3.9372647427854455) internal successors, (3138), 797 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 3138 transitions. [2021-10-08 17:58:52,350 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 3138 transitions. Word has length 26 [2021-10-08 17:58:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:52,350 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 3138 transitions. [2021-10-08 17:58:52,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 3138 transitions. [2021-10-08 17:58:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:58:52,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:52,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:52,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:52,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:52,568 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:52,569 INFO L82 PathProgramCache]: Analyzing trace with hash 781812248, now seen corresponding path program 2 times [2021-10-08 17:58:52,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:52,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973336748] [2021-10-08 17:58:52,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:52,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:52,571 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:52,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:58:52,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:58:52,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:52,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:52,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:52,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:52,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:52,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973336748] [2021-10-08 17:58:52,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973336748] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:52,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:52,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-08 17:58:52,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102972985] [2021-10-08 17:58:52,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:52,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:52,939 INFO L87 Difference]: Start difference. First operand 798 states and 3138 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:53,044 INFO L93 Difference]: Finished difference Result 1128 states and 4158 transitions. [2021-10-08 17:58:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:58:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:53,054 INFO L225 Difference]: With dead ends: 1128 [2021-10-08 17:58:53,054 INFO L226 Difference]: Without dead ends: 922 [2021-10-08 17:58:53,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-10-08 17:58:53,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 850. [2021-10-08 17:58:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 4.055359246171967) internal successors, (3443), 849 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3443 transitions. [2021-10-08 17:58:53,092 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3443 transitions. Word has length 26 [2021-10-08 17:58:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:53,092 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3443 transitions. [2021-10-08 17:58:53,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3443 transitions. [2021-10-08 17:58:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:58:53,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:53,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:53,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:53,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:53,310 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:53,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:53,311 INFO L82 PathProgramCache]: Analyzing trace with hash 673609223, now seen corresponding path program 3 times [2021-10-08 17:58:53,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:53,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875186603] [2021-10-08 17:58:53,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:58:53,313 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:53,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:53,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:58:53,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:58:53,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:53,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:53,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:53,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:53,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:53,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875186603] [2021-10-08 17:58:53,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875186603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:53,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:53,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-08 17:58:53,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358055593] [2021-10-08 17:58:53,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:53,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:58:53,622 INFO L87 Difference]: Start difference. First operand 850 states and 3443 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:53,719 INFO L93 Difference]: Finished difference Result 1190 states and 4662 transitions. [2021-10-08 17:58:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:53,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:58:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:53,732 INFO L225 Difference]: With dead ends: 1190 [2021-10-08 17:58:53,732 INFO L226 Difference]: Without dead ends: 1114 [2021-10-08 17:58:53,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:53,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-10-08 17:58:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 970. [2021-10-08 17:58:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 4.212590299277606) internal successors, (4082), 969 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 4082 transitions. [2021-10-08 17:58:53,777 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 4082 transitions. Word has length 26 [2021-10-08 17:58:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:53,777 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 4082 transitions. [2021-10-08 17:58:53,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:53,778 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 4082 transitions. [2021-10-08 17:58:53,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 17:58:53,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:53,782 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:53,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:53,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:53,997 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:53,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2013855057, now seen corresponding path program 4 times [2021-10-08 17:58:53,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:53,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421887515] [2021-10-08 17:58:53,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:58:53,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:53,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:54,000 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:54,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:58:54,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:58:54,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:54,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:58:54,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:54,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:54,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:54,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421887515] [2021-10-08 17:58:54,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421887515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:58:54,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:58:54,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-08 17:58:54,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963398131] [2021-10-08 17:58:54,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:58:54,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:58:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:54,274 INFO L87 Difference]: Start difference. First operand 970 states and 4082 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:54,397 INFO L93 Difference]: Finished difference Result 1140 states and 4637 transitions. [2021-10-08 17:58:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:54,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 17:58:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:54,409 INFO L225 Difference]: With dead ends: 1140 [2021-10-08 17:58:54,409 INFO L226 Difference]: Without dead ends: 1102 [2021-10-08 17:58:54,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:58:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-10-08 17:58:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 826. [2021-10-08 17:58:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 4.056969696969697) internal successors, (3347), 825 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 3347 transitions. [2021-10-08 17:58:54,462 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 3347 transitions. Word has length 26 [2021-10-08 17:58:54,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:54,462 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 3347 transitions. [2021-10-08 17:58:54,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 3347 transitions. [2021-10-08 17:58:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 17:58:54,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:54,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:54,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:54,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:54,682 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:54,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash 45177930, now seen corresponding path program 1 times [2021-10-08 17:58:54,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:54,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478265810] [2021-10-08 17:58:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:54,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:54,686 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:54,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:58:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:54,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:58:54,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:55,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:55,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:55,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478265810] [2021-10-08 17:58:55,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478265810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:55,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:55,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:58:55,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361909214] [2021-10-08 17:58:55,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:58:55,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:58:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:58:55,273 INFO L87 Difference]: Start difference. First operand 826 states and 3347 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:55,467 INFO L93 Difference]: Finished difference Result 2073 states and 8082 transitions. [2021-10-08 17:58:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:55,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 17:58:55,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:55,486 INFO L225 Difference]: With dead ends: 2073 [2021-10-08 17:58:55,486 INFO L226 Difference]: Without dead ends: 1858 [2021-10-08 17:58:55,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:58:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-10-08 17:58:55,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1658. [2021-10-08 17:58:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1657 states have (on average 4.075437537718769) internal successors, (6753), 1657 states have internal predecessors, (6753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 6753 transitions. [2021-10-08 17:58:55,562 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 6753 transitions. Word has length 27 [2021-10-08 17:58:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:55,562 INFO L470 AbstractCegarLoop]: Abstraction has 1658 states and 6753 transitions. [2021-10-08 17:58:55,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 6753 transitions. [2021-10-08 17:58:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:58:55,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:55,570 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:55,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:55,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:55,783 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:55,784 INFO L82 PathProgramCache]: Analyzing trace with hash 698094682, now seen corresponding path program 2 times [2021-10-08 17:58:55,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:55,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350717488] [2021-10-08 17:58:55,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:55,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:55,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:55,787 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:55,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:58:56,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:58:56,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:56,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:58:56,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:56,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:56,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:56,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350717488] [2021-10-08 17:58:56,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350717488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:56,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:56,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-08 17:58:56,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661490352] [2021-10-08 17:58:56,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:58:56,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:58:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:58:56,622 INFO L87 Difference]: Start difference. First operand 1658 states and 6753 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:58,332 INFO L93 Difference]: Finished difference Result 5276 states and 20913 transitions. [2021-10-08 17:58:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:58:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:58:58,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:58,384 INFO L225 Difference]: With dead ends: 5276 [2021-10-08 17:58:58,384 INFO L226 Difference]: Without dead ends: 5236 [2021-10-08 17:58:58,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 733.9ms TimeCoverageRelationStatistics Valid=313, Invalid=679, Unknown=0, NotChecked=0, Total=992 [2021-10-08 17:58:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2021-10-08 17:58:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 2136. [2021-10-08 17:58:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 2135 states have (on average 4.22576112412178) internal successors, (9022), 2135 states have internal predecessors, (9022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 9022 transitions. [2021-10-08 17:58:58,561 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 9022 transitions. Word has length 28 [2021-10-08 17:58:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:58,562 INFO L470 AbstractCegarLoop]: Abstraction has 2136 states and 9022 transitions. [2021-10-08 17:58:58,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 9022 transitions. [2021-10-08 17:58:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:58:58,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:58,572 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:58,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:58,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:58,787 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:58,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:58,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1941445856, now seen corresponding path program 3 times [2021-10-08 17:58:58,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:58,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197326380] [2021-10-08 17:58:58,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:58:58,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:58,790 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:58,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:58:59,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:58:59,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:59,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:58:59,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:59,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:58:59,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:59,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197326380] [2021-10-08 17:58:59,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197326380] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:58:59,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:58:59,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2021-10-08 17:58:59,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899728080] [2021-10-08 17:58:59,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:58:59,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:59,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:58:59,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:58:59,410 INFO L87 Difference]: Start difference. First operand 2136 states and 9022 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:59,571 INFO L93 Difference]: Finished difference Result 2640 states and 11122 transitions. [2021-10-08 17:58:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:58:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:58:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:59,587 INFO L225 Difference]: With dead ends: 2640 [2021-10-08 17:58:59,587 INFO L226 Difference]: Without dead ends: 2608 [2021-10-08 17:58:59,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:58:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-10-08 17:58:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2422. [2021-10-08 17:58:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2421 states have (on average 4.300289136720363) internal successors, (10411), 2421 states have internal predecessors, (10411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 10411 transitions. [2021-10-08 17:58:59,717 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 10411 transitions. Word has length 28 [2021-10-08 17:58:59,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:59,718 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 10411 transitions. [2021-10-08 17:58:59,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 10411 transitions. [2021-10-08 17:58:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 17:58:59,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:59,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:59,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:59,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:58:59,945 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:58:59,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:59,946 INFO L82 PathProgramCache]: Analyzing trace with hash -534383963, now seen corresponding path program 1 times [2021-10-08 17:58:59,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:59,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448761224] [2021-10-08 17:58:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:58:59,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:59,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:59,949 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:58:59,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:59:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:00,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:59:00,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:00,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:00,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:00,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448761224] [2021-10-08 17:59:00,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448761224] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:00,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:00,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-08 17:59:00,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780201880] [2021-10-08 17:59:00,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 17:59:00,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 17:59:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:59:00,533 INFO L87 Difference]: Start difference. First operand 2422 states and 10411 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:00,947 INFO L93 Difference]: Finished difference Result 4070 states and 16641 transitions. [2021-10-08 17:59:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:59:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 17:59:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:00,968 INFO L225 Difference]: With dead ends: 4070 [2021-10-08 17:59:00,968 INFO L226 Difference]: Without dead ends: 4046 [2021-10-08 17:59:00,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:59:00,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2021-10-08 17:59:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 2166. [2021-10-08 17:59:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 4.32378752886836) internal successors, (9361), 2165 states have internal predecessors, (9361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 9361 transitions. [2021-10-08 17:59:01,090 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 9361 transitions. Word has length 28 [2021-10-08 17:59:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:01,090 INFO L470 AbstractCegarLoop]: Abstraction has 2166 states and 9361 transitions. [2021-10-08 17:59:01,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 9361 transitions. [2021-10-08 17:59:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 17:59:01,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:01,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:01,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:01,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:01,316 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash -902935551, now seen corresponding path program 1 times [2021-10-08 17:59:01,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:01,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011629617] [2021-10-08 17:59:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:01,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:01,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:01,333 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:01,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:59:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:01,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:59:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:01,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:02,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:02,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011629617] [2021-10-08 17:59:02,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011629617] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:02,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:02,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 17:59:02,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649793082] [2021-10-08 17:59:02,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:59:02,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:02,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:59:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:59:02,380 INFO L87 Difference]: Start difference. First operand 2166 states and 9361 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:02,757 INFO L93 Difference]: Finished difference Result 4895 states and 20564 transitions. [2021-10-08 17:59:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:59:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 17:59:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:02,782 INFO L225 Difference]: With dead ends: 4895 [2021-10-08 17:59:02,782 INFO L226 Difference]: Without dead ends: 4648 [2021-10-08 17:59:02,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:59:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2021-10-08 17:59:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 2964. [2021-10-08 17:59:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2963 states have (on average 4.397907526155923) internal successors, (13031), 2963 states have internal predecessors, (13031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 13031 transitions. [2021-10-08 17:59:02,984 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 13031 transitions. Word has length 29 [2021-10-08 17:59:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:02,984 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 13031 transitions. [2021-10-08 17:59:02,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 13031 transitions. [2021-10-08 17:59:02,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:03,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:03,000 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:03,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-08 17:59:03,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:03,216 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:03,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:03,217 INFO L82 PathProgramCache]: Analyzing trace with hash -496817677, now seen corresponding path program 2 times [2021-10-08 17:59:03,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:03,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703344604] [2021-10-08 17:59:03,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:59:03,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:03,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:03,220 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:03,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:59:03,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:59:03,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:03,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:59:03,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:03,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:04,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:04,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703344604] [2021-10-08 17:59:04,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703344604] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:04,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:04,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:59:04,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516518341] [2021-10-08 17:59:04,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:59:04,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:59:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:59:04,006 INFO L87 Difference]: Start difference. First operand 2964 states and 13031 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:05,563 INFO L93 Difference]: Finished difference Result 8764 states and 36430 transitions. [2021-10-08 17:59:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 17:59:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:05,605 INFO L225 Difference]: With dead ends: 8764 [2021-10-08 17:59:05,605 INFO L226 Difference]: Without dead ends: 8530 [2021-10-08 17:59:05,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 752.0ms TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:59:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8530 states. [2021-10-08 17:59:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8530 to 3768. [2021-10-08 17:59:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3767 states have (on average 4.182638704539421) internal successors, (15756), 3767 states have internal predecessors, (15756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 15756 transitions. [2021-10-08 17:59:05,851 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 15756 transitions. Word has length 30 [2021-10-08 17:59:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:05,852 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 15756 transitions. [2021-10-08 17:59:05,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 15756 transitions. [2021-10-08 17:59:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:05,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:05,896 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:05,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:06,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:06,097 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:06,098 INFO L82 PathProgramCache]: Analyzing trace with hash 859338738, now seen corresponding path program 3 times [2021-10-08 17:59:06,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:06,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988033695] [2021-10-08 17:59:06,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:59:06,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:06,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:06,100 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:06,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 17:59:06,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:59:06,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:06,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:06,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:06,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:06,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:06,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988033695] [2021-10-08 17:59:06,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988033695] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:06,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:06,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:59:06,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964637783] [2021-10-08 17:59:06,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:59:06,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:59:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:59:06,819 INFO L87 Difference]: Start difference. First operand 3768 states and 15756 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:07,591 INFO L93 Difference]: Finished difference Result 4974 states and 19843 transitions. [2021-10-08 17:59:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:59:07,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:07,612 INFO L225 Difference]: With dead ends: 4974 [2021-10-08 17:59:07,612 INFO L226 Difference]: Without dead ends: 4586 [2021-10-08 17:59:07,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 300.1ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:59:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-10-08 17:59:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4084. [2021-10-08 17:59:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 4083 states have (on average 4.198138623561107) internal successors, (17141), 4083 states have internal predecessors, (17141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 17141 transitions. [2021-10-08 17:59:07,839 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 17141 transitions. Word has length 30 [2021-10-08 17:59:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:07,840 INFO L470 AbstractCegarLoop]: Abstraction has 4084 states and 17141 transitions. [2021-10-08 17:59:07,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 17141 transitions. [2021-10-08 17:59:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:07,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:07,859 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:07,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-08 17:59:08,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:08,073 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash -756120577, now seen corresponding path program 4 times [2021-10-08 17:59:08,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:08,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839710159] [2021-10-08 17:59:08,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:59:08,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:08,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:08,077 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:08,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 17:59:08,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:59:08,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:08,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:08,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:08,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:08,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:08,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839710159] [2021-10-08 17:59:08,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839710159] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:08,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:08,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 17:59:08,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744541989] [2021-10-08 17:59:08,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:59:08,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:59:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:59:08,771 INFO L87 Difference]: Start difference. First operand 4084 states and 17141 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:09,656 INFO L93 Difference]: Finished difference Result 6006 states and 25233 transitions. [2021-10-08 17:59:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:59:09,656 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:09,675 INFO L225 Difference]: With dead ends: 6006 [2021-10-08 17:59:09,675 INFO L226 Difference]: Without dead ends: 5964 [2021-10-08 17:59:09,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 342.3ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:59:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2021-10-08 17:59:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 5112. [2021-10-08 17:59:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5111 states have (on average 4.355116415574251) internal successors, (22259), 5111 states have internal predecessors, (22259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 22259 transitions. [2021-10-08 17:59:09,964 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 22259 transitions. Word has length 30 [2021-10-08 17:59:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:09,966 INFO L470 AbstractCegarLoop]: Abstraction has 5112 states and 22259 transitions. [2021-10-08 17:59:09,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 22259 transitions. [2021-10-08 17:59:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:09,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:09,991 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:10,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:10,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:10,205 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1249027510, now seen corresponding path program 5 times [2021-10-08 17:59:10,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:10,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607026861] [2021-10-08 17:59:10,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:59:10,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:10,209 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:10,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 17:59:10,473 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:59:10,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:10,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:10,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:10,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:10,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:10,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607026861] [2021-10-08 17:59:10,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607026861] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:10,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:10,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:59:10,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678664054] [2021-10-08 17:59:10,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:59:10,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:59:10,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:59:10,909 INFO L87 Difference]: Start difference. First operand 5112 states and 22259 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:11,687 INFO L93 Difference]: Finished difference Result 9096 states and 40465 transitions. [2021-10-08 17:59:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 17:59:11,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 30 [2021-10-08 17:59:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:11,718 INFO L225 Difference]: With dead ends: 9096 [2021-10-08 17:59:11,718 INFO L226 Difference]: Without dead ends: 9024 [2021-10-08 17:59:11,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 335.5ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:59:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2021-10-08 17:59:12,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 7150. [2021-10-08 17:59:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 7149 states have (on average 4.651419778990069) internal successors, (33253), 7149 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) [2021-10-08 17:59:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 33253 transitions. [2021-10-08 17:59:12,145 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 33253 transitions. Word has length 30 [2021-10-08 17:59:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:12,145 INFO L470 AbstractCegarLoop]: Abstraction has 7150 states and 33253 transitions. [2021-10-08 17:59:12,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 33253 transitions. [2021-10-08 17:59:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:12,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:12,200 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:12,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:12,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:12,415 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:12,416 INFO L82 PathProgramCache]: Analyzing trace with hash 171891044, now seen corresponding path program 6 times [2021-10-08 17:59:12,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:12,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430239253] [2021-10-08 17:59:12,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:59:12,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:12,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:12,419 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:12,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 17:59:12,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:59:12,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:12,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:59:12,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:12,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:13,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:13,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430239253] [2021-10-08 17:59:13,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430239253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:13,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:13,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:59:13,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750475494] [2021-10-08 17:59:13,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:59:13,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:59:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:59:13,458 INFO L87 Difference]: Start difference. First operand 7150 states and 33253 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:15,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:15,824 INFO L93 Difference]: Finished difference Result 15252 states and 64785 transitions. [2021-10-08 17:59:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 17:59:15,825 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:15,875 INFO L225 Difference]: With dead ends: 15252 [2021-10-08 17:59:15,876 INFO L226 Difference]: Without dead ends: 14870 [2021-10-08 17:59:15,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 863.9ms TimeCoverageRelationStatistics Valid=320, Invalid=736, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:59:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14870 states. [2021-10-08 17:59:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14870 to 8654. [2021-10-08 17:59:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8654 states, 8653 states have (on average 4.815439731884895) internal successors, (41668), 8653 states have internal predecessors, (41668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8654 states to 8654 states and 41668 transitions. [2021-10-08 17:59:16,417 INFO L78 Accepts]: Start accepts. Automaton has 8654 states and 41668 transitions. Word has length 30 [2021-10-08 17:59:16,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:16,417 INFO L470 AbstractCegarLoop]: Abstraction has 8654 states and 41668 transitions. [2021-10-08 17:59:16,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:16,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8654 states and 41668 transitions. [2021-10-08 17:59:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:16,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:16,455 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:16,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:16,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:16,670 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:16,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2143328261, now seen corresponding path program 7 times [2021-10-08 17:59:16,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:16,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176688541] [2021-10-08 17:59:16,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:59:16,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:16,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:16,673 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:16,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 17:59:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:16,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:16,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:17,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:17,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:17,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176688541] [2021-10-08 17:59:17,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176688541] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:17,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:17,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 17:59:17,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260916129] [2021-10-08 17:59:17,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:59:17,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:59:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:59:17,339 INFO L87 Difference]: Start difference. First operand 8654 states and 41668 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:18,611 INFO L93 Difference]: Finished difference Result 13494 states and 61549 transitions. [2021-10-08 17:59:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:59:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:18,662 INFO L225 Difference]: With dead ends: 13494 [2021-10-08 17:59:18,662 INFO L226 Difference]: Without dead ends: 13438 [2021-10-08 17:59:18,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 497.3ms TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:59:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2021-10-08 17:59:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 8964. [2021-10-08 17:59:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8963 states have (on average 4.825839562646435) internal successors, (43254), 8963 states have internal predecessors, (43254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 43254 transitions. [2021-10-08 17:59:19,114 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 43254 transitions. Word has length 30 [2021-10-08 17:59:19,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:19,114 INFO L470 AbstractCegarLoop]: Abstraction has 8964 states and 43254 transitions. [2021-10-08 17:59:19,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 43254 transitions. [2021-10-08 17:59:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:19,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:19,261 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:19,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-08 17:59:19,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:19,475 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:19,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1952505657, now seen corresponding path program 8 times [2021-10-08 17:59:19,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:19,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438648530] [2021-10-08 17:59:19,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:59:19,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:19,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:19,478 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:19,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 17:59:19,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:59:19,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:19,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:59:19,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:20,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:20,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:20,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438648530] [2021-10-08 17:59:20,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438648530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:20,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:20,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:59:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316834924] [2021-10-08 17:59:20,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:59:20,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:59:20,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:59:20,386 INFO L87 Difference]: Start difference. First operand 8964 states and 43254 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:21,431 INFO L93 Difference]: Finished difference Result 13626 states and 65017 transitions. [2021-10-08 17:59:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 17:59:21,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:21,483 INFO L225 Difference]: With dead ends: 13626 [2021-10-08 17:59:21,483 INFO L226 Difference]: Without dead ends: 13484 [2021-10-08 17:59:21,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 412.6ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:59:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13484 states. [2021-10-08 17:59:22,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13484 to 10786. [2021-10-08 17:59:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10786 states, 10785 states have (on average 4.983866481223922) internal successors, (53751), 10785 states have internal predecessors, (53751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10786 states to 10786 states and 53751 transitions. [2021-10-08 17:59:22,147 INFO L78 Accepts]: Start accepts. Automaton has 10786 states and 53751 transitions. Word has length 30 [2021-10-08 17:59:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:22,148 INFO L470 AbstractCegarLoop]: Abstraction has 10786 states and 53751 transitions. [2021-10-08 17:59:22,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 10786 states and 53751 transitions. [2021-10-08 17:59:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:22,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:22,187 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:22,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:22,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:22,389 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1306857423, now seen corresponding path program 9 times [2021-10-08 17:59:22,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:22,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862307660] [2021-10-08 17:59:22,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:59:22,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:22,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:22,392 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:22,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 17:59:22,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:59:22,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:22,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:59:22,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:23,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:23,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:23,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862307660] [2021-10-08 17:59:23,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862307660] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:23,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:23,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:59:23,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493303392] [2021-10-08 17:59:23,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:59:23,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:59:23,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:59:23,439 INFO L87 Difference]: Start difference. First operand 10786 states and 53751 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:25,289 INFO L93 Difference]: Finished difference Result 17890 states and 83496 transitions. [2021-10-08 17:59:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:59:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:25,356 INFO L225 Difference]: With dead ends: 17890 [2021-10-08 17:59:25,357 INFO L226 Difference]: Without dead ends: 17612 [2021-10-08 17:59:25,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 852.3ms TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:59:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17612 states. [2021-10-08 17:59:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17612 to 11722. [2021-10-08 17:59:26,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11722 states, 11721 states have (on average 4.988738162272844) internal successors, (58473), 11721 states have internal predecessors, (58473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11722 states to 11722 states and 58473 transitions. [2021-10-08 17:59:26,092 INFO L78 Accepts]: Start accepts. Automaton has 11722 states and 58473 transitions. Word has length 30 [2021-10-08 17:59:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:26,092 INFO L470 AbstractCegarLoop]: Abstraction has 11722 states and 58473 transitions. [2021-10-08 17:59:26,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 11722 states and 58473 transitions. [2021-10-08 17:59:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:26,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:26,329 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:26,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:26,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:26,530 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:26,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:26,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1230049831, now seen corresponding path program 10 times [2021-10-08 17:59:26,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:26,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604234225] [2021-10-08 17:59:26,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:59:26,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:26,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:26,535 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 17:59:26,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:59:26,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:26,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:26,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:27,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:27,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:27,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604234225] [2021-10-08 17:59:27,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604234225] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:27,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:27,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 17:59:27,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179994557] [2021-10-08 17:59:27,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:59:27,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:59:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:59:27,248 INFO L87 Difference]: Start difference. First operand 11722 states and 58473 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:28,498 INFO L93 Difference]: Finished difference Result 16324 states and 80815 transitions. [2021-10-08 17:59:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:59:28,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:28,575 INFO L225 Difference]: With dead ends: 16324 [2021-10-08 17:59:28,575 INFO L226 Difference]: Without dead ends: 16012 [2021-10-08 17:59:28,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 330.8ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:59:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16012 states. [2021-10-08 17:59:29,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16012 to 13476. [2021-10-08 17:59:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13476 states, 13475 states have (on average 5.129573283858998) internal successors, (69121), 13475 states have internal predecessors, (69121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13476 states to 13476 states and 69121 transitions. [2021-10-08 17:59:29,258 INFO L78 Accepts]: Start accepts. Automaton has 13476 states and 69121 transitions. Word has length 30 [2021-10-08 17:59:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:29,258 INFO L470 AbstractCegarLoop]: Abstraction has 13476 states and 69121 transitions. [2021-10-08 17:59:29,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 13476 states and 69121 transitions. [2021-10-08 17:59:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:29,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:29,299 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:29,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:29,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:29,500 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash -147778353, now seen corresponding path program 11 times [2021-10-08 17:59:29,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:29,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757770182] [2021-10-08 17:59:29,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:59:29,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:29,504 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:29,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 17:59:29,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:59:29,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:29,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:29,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:30,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:30,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:30,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757770182] [2021-10-08 17:59:30,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757770182] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:30,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:30,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:59:30,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225231920] [2021-10-08 17:59:30,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:59:30,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:59:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:59:30,374 INFO L87 Difference]: Start difference. First operand 13476 states and 69121 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:31,602 INFO L93 Difference]: Finished difference Result 20132 states and 97964 transitions. [2021-10-08 17:59:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:59:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:31,691 INFO L225 Difference]: With dead ends: 20132 [2021-10-08 17:59:31,691 INFO L226 Difference]: Without dead ends: 20026 [2021-10-08 17:59:31,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 505.7ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:59:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2021-10-08 17:59:32,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 15138. [2021-10-08 17:59:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 5.1345048556517145) internal successors, (77721), 15137 states have internal predecessors, (77721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 77721 transitions. [2021-10-08 17:59:32,531 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 77721 transitions. Word has length 30 [2021-10-08 17:59:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:32,532 INFO L470 AbstractCegarLoop]: Abstraction has 15138 states and 77721 transitions. [2021-10-08 17:59:32,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 77721 transitions. [2021-10-08 17:59:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:32,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:32,581 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:32,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:32,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:32,795 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:32,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:32,796 INFO L82 PathProgramCache]: Analyzing trace with hash -91560709, now seen corresponding path program 12 times [2021-10-08 17:59:32,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:32,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808998100] [2021-10-08 17:59:32,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:59:32,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:32,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:32,799 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:32,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 17:59:33,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:59:33,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:33,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:59:33,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:33,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:33,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:33,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808998100] [2021-10-08 17:59:33,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808998100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:33,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:33,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-08 17:59:33,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295229176] [2021-10-08 17:59:33,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:59:33,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:33,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:59:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:59:33,693 INFO L87 Difference]: Start difference. First operand 15138 states and 77721 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:35,236 INFO L93 Difference]: Finished difference Result 30474 states and 146407 transitions. [2021-10-08 17:59:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:59:35,237 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:35,582 INFO L225 Difference]: With dead ends: 30474 [2021-10-08 17:59:35,583 INFO L226 Difference]: Without dead ends: 30172 [2021-10-08 17:59:35,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 769.1ms TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:59:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30172 states. [2021-10-08 17:59:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30172 to 16068. [2021-10-08 17:59:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16068 states, 16067 states have (on average 5.04674176884297) internal successors, (81086), 16067 states have internal predecessors, (81086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16068 states to 16068 states and 81086 transitions. [2021-10-08 17:59:36,626 INFO L78 Accepts]: Start accepts. Automaton has 16068 states and 81086 transitions. Word has length 30 [2021-10-08 17:59:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:36,627 INFO L470 AbstractCegarLoop]: Abstraction has 16068 states and 81086 transitions. [2021-10-08 17:59:36,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 16068 states and 81086 transitions. [2021-10-08 17:59:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:36,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:36,687 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:36,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-08 17:59:36,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:36,901 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:36,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1965175933, now seen corresponding path program 13 times [2021-10-08 17:59:36,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:36,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934589465] [2021-10-08 17:59:36,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:59:36,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:36,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:36,904 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:36,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 17:59:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:37,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:37,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:37,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:37,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:37,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934589465] [2021-10-08 17:59:37,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934589465] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:37,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:37,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 17:59:37,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86579156] [2021-10-08 17:59:37,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:59:37,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:59:37,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:59:37,697 INFO L87 Difference]: Start difference. First operand 16068 states and 81086 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:39,076 INFO L93 Difference]: Finished difference Result 30264 states and 144696 transitions. [2021-10-08 17:59:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:59:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:39,385 INFO L225 Difference]: With dead ends: 30264 [2021-10-08 17:59:39,385 INFO L226 Difference]: Without dead ends: 29986 [2021-10-08 17:59:39,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 542.8ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:59:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29986 states. [2021-10-08 17:59:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29986 to 18668. [2021-10-08 17:59:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18668 states, 18667 states have (on average 5.145390260888198) internal successors, (96049), 18667 states have internal predecessors, (96049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18668 states to 18668 states and 96049 transitions. [2021-10-08 17:59:40,496 INFO L78 Accepts]: Start accepts. Automaton has 18668 states and 96049 transitions. Word has length 30 [2021-10-08 17:59:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:40,497 INFO L470 AbstractCegarLoop]: Abstraction has 18668 states and 96049 transitions. [2021-10-08 17:59:40,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 18668 states and 96049 transitions. [2021-10-08 17:59:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:40,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:40,561 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:40,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-08 17:59:40,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:40,762 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:40,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1408552163, now seen corresponding path program 14 times [2021-10-08 17:59:40,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:40,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100674394] [2021-10-08 17:59:40,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:59:40,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:40,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:40,766 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:40,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 17:59:41,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:59:41,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:41,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:59:41,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:41,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:41,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:41,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100674394] [2021-10-08 17:59:41,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100674394] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:41,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:41,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:59:41,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128490183] [2021-10-08 17:59:41,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:59:41,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:41,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:59:41,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:59:41,729 INFO L87 Difference]: Start difference. First operand 18668 states and 96049 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:44,191 INFO L93 Difference]: Finished difference Result 30524 states and 150889 transitions. [2021-10-08 17:59:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:59:44,192 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:44,338 INFO L225 Difference]: With dead ends: 30524 [2021-10-08 17:59:44,338 INFO L226 Difference]: Without dead ends: 30088 [2021-10-08 17:59:44,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 965.0ms TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:59:44,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30088 states. [2021-10-08 17:59:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30088 to 20698. [2021-10-08 17:59:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20698 states, 20697 states have (on average 5.177658597864425) internal successors, (107162), 20697 states have internal predecessors, (107162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20698 states to 20698 states and 107162 transitions. [2021-10-08 17:59:45,446 INFO L78 Accepts]: Start accepts. Automaton has 20698 states and 107162 transitions. Word has length 30 [2021-10-08 17:59:45,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:45,446 INFO L470 AbstractCegarLoop]: Abstraction has 20698 states and 107162 transitions. [2021-10-08 17:59:45,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 20698 states and 107162 transitions. [2021-10-08 17:59:45,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:45,522 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:45,522 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:45,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:45,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:45,723 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:45,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1704255697, now seen corresponding path program 15 times [2021-10-08 17:59:45,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:45,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578787431] [2021-10-08 17:59:45,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:59:45,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:45,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:45,727 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:45,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 17:59:46,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:59:46,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:46,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:59:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:46,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:59:46,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:46,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578787431] [2021-10-08 17:59:46,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578787431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:46,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:46,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 17:59:46,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818796981] [2021-10-08 17:59:46,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:59:46,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:59:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:59:46,819 INFO L87 Difference]: Start difference. First operand 20698 states and 107162 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:48,999 INFO L93 Difference]: Finished difference Result 40456 states and 199303 transitions. [2021-10-08 17:59:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:59:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:49,244 INFO L225 Difference]: With dead ends: 40456 [2021-10-08 17:59:49,244 INFO L226 Difference]: Without dead ends: 40350 [2021-10-08 17:59:49,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 799.2ms TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:59:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40350 states. [2021-10-08 17:59:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40350 to 24360. [2021-10-08 17:59:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24360 states, 24359 states have (on average 5.271603924627448) internal successors, (128411), 24359 states have internal predecessors, (128411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24360 states to 24360 states and 128411 transitions. [2021-10-08 17:59:50,600 INFO L78 Accepts]: Start accepts. Automaton has 24360 states and 128411 transitions. Word has length 30 [2021-10-08 17:59:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:50,600 INFO L470 AbstractCegarLoop]: Abstraction has 24360 states and 128411 transitions. [2021-10-08 17:59:50,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 24360 states and 128411 transitions. [2021-10-08 17:59:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:50,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:50,688 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, 1, 1, 1, 1, 1] [2021-10-08 17:59:50,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-08 17:59:50,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:50,889 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1974958780, now seen corresponding path program 1 times [2021-10-08 17:59:50,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:50,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185447013] [2021-10-08 17:59:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:50,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:50,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:50,893 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:50,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 17:59:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:51,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:59:51,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:51,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:51,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:51,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185447013] [2021-10-08 17:59:51,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185447013] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:51,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:51,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 17:59:51,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852311194] [2021-10-08 17:59:51,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:59:51,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:59:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:59:51,625 INFO L87 Difference]: Start difference. First operand 24360 states and 128411 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:52,985 INFO L93 Difference]: Finished difference Result 28032 states and 142257 transitions. [2021-10-08 17:59:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:59:52,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:53,231 INFO L225 Difference]: With dead ends: 28032 [2021-10-08 17:59:53,231 INFO L226 Difference]: Without dead ends: 27522 [2021-10-08 17:59:53,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 531.9ms TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:59:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27522 states. [2021-10-08 17:59:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27522 to 25142. [2021-10-08 17:59:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25142 states, 25141 states have (on average 5.234596873632712) internal successors, (131603), 25141 states have internal predecessors, (131603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 131603 transitions. [2021-10-08 17:59:54,743 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 131603 transitions. Word has length 30 [2021-10-08 17:59:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:54,743 INFO L470 AbstractCegarLoop]: Abstraction has 25142 states and 131603 transitions. [2021-10-08 17:59:54,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 131603 transitions. [2021-10-08 17:59:54,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:54,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:54,823 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:54,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 17:59:55,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:55,024 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:55,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:55,026 INFO L82 PathProgramCache]: Analyzing trace with hash 21620165, now seen corresponding path program 16 times [2021-10-08 17:59:55,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:55,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676518436] [2021-10-08 17:59:55,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:59:55,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:55,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:55,028 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:55,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 17:59:55,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:59:55,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:55,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:55,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:55,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:56,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:56,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676518436] [2021-10-08 17:59:56,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676518436] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:56,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:56,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 17:59:56,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464127278] [2021-10-08 17:59:56,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:59:56,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:59:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:59:56,080 INFO L87 Difference]: Start difference. First operand 25142 states and 131603 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:57,554 INFO L93 Difference]: Finished difference Result 28716 states and 146422 transitions. [2021-10-08 17:59:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:59:57,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 17:59:57,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:57,817 INFO L225 Difference]: With dead ends: 28716 [2021-10-08 17:59:57,817 INFO L226 Difference]: Without dead ends: 28200 [2021-10-08 17:59:57,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 461.4ms TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:59:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28200 states. [2021-10-08 17:59:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28200 to 25552. [2021-10-08 17:59:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25552 states, 25551 states have (on average 5.266838871277054) internal successors, (134573), 25551 states have internal predecessors, (134573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25552 states to 25552 states and 134573 transitions. [2021-10-08 17:59:59,325 INFO L78 Accepts]: Start accepts. Automaton has 25552 states and 134573 transitions. Word has length 30 [2021-10-08 17:59:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:59,326 INFO L470 AbstractCegarLoop]: Abstraction has 25552 states and 134573 transitions. [2021-10-08 17:59:59,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 25552 states and 134573 transitions. [2021-10-08 17:59:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 17:59:59,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:59,412 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:59,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-08 17:59:59,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:59,625 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 17:59:59,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:59,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1971042085, now seen corresponding path program 17 times [2021-10-08 17:59:59,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:59,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967232726] [2021-10-08 17:59:59,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:59:59,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:59,629 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:59,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 18:00:00,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:00:00,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:00,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:00:00,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:00,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:00,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:00,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967232726] [2021-10-08 18:00:00,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967232726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:00,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:00,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 18:00:00,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602566138] [2021-10-08 18:00:00,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:00:00,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:00:00,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:00:00,606 INFO L87 Difference]: Start difference. First operand 25552 states and 134573 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:01,838 INFO L93 Difference]: Finished difference Result 31758 states and 161991 transitions. [2021-10-08 18:00:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:00:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:00:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:02,157 INFO L225 Difference]: With dead ends: 31758 [2021-10-08 18:00:02,157 INFO L226 Difference]: Without dead ends: 31524 [2021-10-08 18:00:02,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 404.3ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31524 states. [2021-10-08 18:00:03,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31524 to 28090. [2021-10-08 18:00:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28090 states, 28089 states have (on average 5.285343016839332) internal successors, (148460), 28089 states have internal predecessors, (148460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28090 states to 28090 states and 148460 transitions. [2021-10-08 18:00:03,915 INFO L78 Accepts]: Start accepts. Automaton has 28090 states and 148460 transitions. Word has length 30 [2021-10-08 18:00:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:03,915 INFO L470 AbstractCegarLoop]: Abstraction has 28090 states and 148460 transitions. [2021-10-08 18:00:03,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 28090 states and 148460 transitions. [2021-10-08 18:00:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:00:04,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:04,004 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:04,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-08 18:00:04,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:04,206 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:00:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:04,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1067393372, now seen corresponding path program 18 times [2021-10-08 18:00:04,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:04,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872313147] [2021-10-08 18:00:04,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:00:04,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:04,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:04,209 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:04,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 18:00:04,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 18:00:04,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:04,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:00:04,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:00:04,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:00:05,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:05,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872313147] [2021-10-08 18:00:05,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872313147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:05,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:05,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-08 18:00:05,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821531711] [2021-10-08 18:00:05,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:00:05,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:00:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:05,463 INFO L87 Difference]: Start difference. First operand 28090 states and 148460 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:07,062 INFO L93 Difference]: Finished difference Result 51944 states and 257086 transitions. [2021-10-08 18:00:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 18:00:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:00:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:07,992 INFO L225 Difference]: With dead ends: 51944 [2021-10-08 18:00:07,992 INFO L226 Difference]: Without dead ends: 50782 [2021-10-08 18:00:07,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 519.1ms TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:00:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50782 states. [2021-10-08 18:00:09,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50782 to 32004. [2021-10-08 18:00:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32004 states, 32003 states have (on average 5.283629659719401) internal successors, (169092), 32003 states have internal predecessors, (169092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32004 states to 32004 states and 169092 transitions. [2021-10-08 18:00:10,041 INFO L78 Accepts]: Start accepts. Automaton has 32004 states and 169092 transitions. Word has length 30 [2021-10-08 18:00:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:10,042 INFO L470 AbstractCegarLoop]: Abstraction has 32004 states and 169092 transitions. [2021-10-08 18:00:10,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 32004 states and 169092 transitions. [2021-10-08 18:00:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:00:10,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:10,144 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:10,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:10,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:10,345 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:00:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:10,346 INFO L82 PathProgramCache]: Analyzing trace with hash -839705241, now seen corresponding path program 19 times [2021-10-08 18:00:10,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:10,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537202369] [2021-10-08 18:00:10,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:00:10,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:10,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:10,349 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:10,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 18:00:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:11,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:00:11,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:11,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:11,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:11,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537202369] [2021-10-08 18:00:11,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537202369] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:11,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:11,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-08 18:00:11,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848087542] [2021-10-08 18:00:11,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:00:11,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:00:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:00:11,585 INFO L87 Difference]: Start difference. First operand 32004 states and 169092 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:13,589 INFO L93 Difference]: Finished difference Result 49322 states and 250324 transitions. [2021-10-08 18:00:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:00:13,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:00:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:13,933 INFO L225 Difference]: With dead ends: 49322 [2021-10-08 18:00:13,933 INFO L226 Difference]: Without dead ends: 48440 [2021-10-08 18:00:13,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 519.8ms TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:00:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48440 states. [2021-10-08 18:00:15,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48440 to 35458. [2021-10-08 18:00:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35458 states, 35457 states have (on average 5.37115379191697) internal successors, (190445), 35457 states have internal predecessors, (190445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35458 states to 35458 states and 190445 transitions. [2021-10-08 18:00:16,019 INFO L78 Accepts]: Start accepts. Automaton has 35458 states and 190445 transitions. Word has length 30 [2021-10-08 18:00:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:16,020 INFO L470 AbstractCegarLoop]: Abstraction has 35458 states and 190445 transitions. [2021-10-08 18:00:16,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 35458 states and 190445 transitions. [2021-10-08 18:00:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:00:16,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:16,139 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:16,556 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forcibly destroying the process [2021-10-08 18:00:16,556 WARN L724 oredProcess$PipePump]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] The stream was forcibly closed: stdIn [2021-10-08 18:00:16,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:16,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:16,579 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:00:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1781694911, now seen corresponding path program 20 times [2021-10-08 18:00:16,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:16,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037099785] [2021-10-08 18:00:16,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:00:16,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:16,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:16,581 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:16,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 18:00:17,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:17,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:17,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:00:17,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:17,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:17,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:17,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037099785] [2021-10-08 18:00:17,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037099785] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:17,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:17,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 18:00:17,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812916021] [2021-10-08 18:00:17,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:00:17,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:00:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:00:17,545 INFO L87 Difference]: Start difference. First operand 35458 states and 190445 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:19,548 INFO L93 Difference]: Finished difference Result 57598 states and 282493 transitions. [2021-10-08 18:00:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:00:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:00:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:19,924 INFO L225 Difference]: With dead ends: 57598 [2021-10-08 18:00:19,924 INFO L226 Difference]: Without dead ends: 57218 [2021-10-08 18:00:19,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 555.0ms TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:00:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57218 states. [2021-10-08 18:00:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57218 to 34266. [2021-10-08 18:00:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34266 states, 34265 states have (on average 5.338333576535824) internal successors, (182918), 34265 states have internal predecessors, (182918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34266 states to 34266 states and 182918 transitions. [2021-10-08 18:00:21,982 INFO L78 Accepts]: Start accepts. Automaton has 34266 states and 182918 transitions. Word has length 30 [2021-10-08 18:00:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:21,982 INFO L470 AbstractCegarLoop]: Abstraction has 34266 states and 182918 transitions. [2021-10-08 18:00:21,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 34266 states and 182918 transitions. [2021-10-08 18:00:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:00:22,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:22,095 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:22,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:22,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:22,296 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:00:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1557843198, now seen corresponding path program 21 times [2021-10-08 18:00:22,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:22,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227423652] [2021-10-08 18:00:22,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:00:22,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:22,300 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:22,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 18:00:23,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:00:23,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:23,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:00:23,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:00:23,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:00:23,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:23,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227423652] [2021-10-08 18:00:23,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227423652] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:23,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:23,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 18:00:23,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123424029] [2021-10-08 18:00:23,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:00:23,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:00:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:00:23,679 INFO L87 Difference]: Start difference. First operand 34266 states and 182918 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) 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) [2021-10-08 18:00:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:27,211 INFO L93 Difference]: Finished difference Result 70010 states and 355359 transitions. [2021-10-08 18:00:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 18:00:27,212 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) 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 30 [2021-10-08 18:00:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:27,664 INFO L225 Difference]: With dead ends: 70010 [2021-10-08 18:00:27,664 INFO L226 Difference]: Without dead ends: 69244 [2021-10-08 18:00:27,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1115.5ms TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:00:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69244 states. [2021-10-08 18:00:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69244 to 46964. [2021-10-08 18:00:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46964 states, 46963 states have (on average 5.427208653620935) internal successors, (254878), 46963 states have internal predecessors, (254878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46964 states to 46964 states and 254878 transitions. [2021-10-08 18:00:30,600 INFO L78 Accepts]: Start accepts. Automaton has 46964 states and 254878 transitions. Word has length 30 [2021-10-08 18:00:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:30,600 INFO L470 AbstractCegarLoop]: Abstraction has 46964 states and 254878 transitions. [2021-10-08 18:00:30,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) 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) [2021-10-08 18:00:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 46964 states and 254878 transitions. [2021-10-08 18:00:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:00:31,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:31,377 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, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:31,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:31,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:31,590 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:00:31,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:31,591 INFO L82 PathProgramCache]: Analyzing trace with hash -689404415, now seen corresponding path program 22 times [2021-10-08 18:00:31,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:31,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831606542] [2021-10-08 18:00:31,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:00:31,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:31,594 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:31,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 18:00:32,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:00:32,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:32,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:00:32,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:00:32,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:00:32,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:32,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831606542] [2021-10-08 18:00:32,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831606542] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:32,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:32,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 18:00:32,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840286910] [2021-10-08 18:00:32,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:00:32,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:00:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:00:32,513 INFO L87 Difference]: Start difference. First operand 46964 states and 254878 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:34,905 INFO L93 Difference]: Finished difference Result 70282 states and 375511 transitions. [2021-10-08 18:00:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:00:34,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:00:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:35,423 INFO L225 Difference]: With dead ends: 70282 [2021-10-08 18:00:35,423 INFO L226 Difference]: Without dead ends: 69748 [2021-10-08 18:00:35,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 504.6ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:00:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69748 states. [2021-10-08 18:00:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69748 to 52578. [2021-10-08 18:00:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52578 states, 52577 states have (on average 5.475721323011963) internal successors, (287897), 52577 states have internal predecessors, (287897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52578 states to 52578 states and 287897 transitions. [2021-10-08 18:00:39,413 INFO L78 Accepts]: Start accepts. Automaton has 52578 states and 287897 transitions. Word has length 30 [2021-10-08 18:00:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:39,416 INFO L470 AbstractCegarLoop]: Abstraction has 52578 states and 287897 transitions. [2021-10-08 18:00:39,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 52578 states and 287897 transitions. [2021-10-08 18:00:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:00:39,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:39,807 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:39,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-08 18:00:40,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:40,022 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:00:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash -451264157, now seen corresponding path program 23 times [2021-10-08 18:00:40,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:40,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472302366] [2021-10-08 18:00:40,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:00:40,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:40,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:40,025 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:40,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 18:00:40,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:00:40,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:40,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:00:40,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:40,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:41,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:41,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472302366] [2021-10-08 18:00:41,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472302366] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:41,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:41,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 18:00:41,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336642587] [2021-10-08 18:00:41,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:00:41,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:00:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:00:41,103 INFO L87 Difference]: Start difference. First operand 52578 states and 287897 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:43,372 INFO L93 Difference]: Finished difference Result 79174 states and 418743 transitions. [2021-10-08 18:00:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:00:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 30 [2021-10-08 18:00:43,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:44,335 INFO L225 Difference]: With dead ends: 79174 [2021-10-08 18:00:44,336 INFO L226 Difference]: Without dead ends: 76986 [2021-10-08 18:00:44,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 394.8ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:00:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76986 states. [2021-10-08 18:00:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76986 to 63126. [2021-10-08 18:00:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63126 states, 63125 states have (on average 5.55550099009901) internal successors, (350691), 63125 states have internal predecessors, (350691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63126 states to 63126 states and 350691 transitions. [2021-10-08 18:00:47,901 INFO L78 Accepts]: Start accepts. Automaton has 63126 states and 350691 transitions. Word has length 30 [2021-10-08 18:00:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:47,902 INFO L470 AbstractCegarLoop]: Abstraction has 63126 states and 350691 transitions. [2021-10-08 18:00:47,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 63126 states and 350691 transitions. [2021-10-08 18:00:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:00:48,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:48,657 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:48,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:48,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:48,869 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:00:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1626479783, now seen corresponding path program 24 times [2021-10-08 18:00:48,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:48,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695768718] [2021-10-08 18:00:48,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:00:48,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:48,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:48,873 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:48,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 18:00:49,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:00:49,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:49,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:00:49,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:49,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:49,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:49,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695768718] [2021-10-08 18:00:49,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695768718] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:49,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 18:00:49,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510780776] [2021-10-08 18:00:49,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:00:49,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:49,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:00:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:00:49,984 INFO L87 Difference]: Start difference. First operand 63126 states and 350691 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:54,509 INFO L93 Difference]: Finished difference Result 137102 states and 715490 transitions. [2021-10-08 18:00:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 18:00:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:00:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:56,253 INFO L225 Difference]: With dead ends: 137102 [2021-10-08 18:00:56,253 INFO L226 Difference]: Without dead ends: 136892 [2021-10-08 18:00:56,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1175.9ms TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:00:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136892 states. [2021-10-08 18:01:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136892 to 82204. [2021-10-08 18:01:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82204 states, 82203 states have (on average 5.665717796187487) internal successors, (465739), 82203 states have internal predecessors, (465739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82204 states to 82204 states and 465739 transitions. [2021-10-08 18:01:02,282 INFO L78 Accepts]: Start accepts. Automaton has 82204 states and 465739 transitions. Word has length 30 [2021-10-08 18:01:02,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:02,282 INFO L470 AbstractCegarLoop]: Abstraction has 82204 states and 465739 transitions. [2021-10-08 18:01:02,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 82204 states and 465739 transitions. [2021-10-08 18:01:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:01:03,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:03,332 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:03,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:03,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:03,546 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:01:03,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:03,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1627827031, now seen corresponding path program 25 times [2021-10-08 18:01:03,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:03,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222777609] [2021-10-08 18:01:03,548 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:01:03,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:03,549 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:03,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 18:01:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:01:04,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:01:04,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:04,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:04,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:04,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222777609] [2021-10-08 18:01:04,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222777609] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:04,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:04,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 18:01:04,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521526541] [2021-10-08 18:01:04,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:01:04,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:01:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:01:04,556 INFO L87 Difference]: Start difference. First operand 82204 states and 465739 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:07,424 INFO L93 Difference]: Finished difference Result 108360 states and 592875 transitions. [2021-10-08 18:01:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:01:07,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:01:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:08,424 INFO L225 Difference]: With dead ends: 108360 [2021-10-08 18:01:08,424 INFO L226 Difference]: Without dead ends: 104458 [2021-10-08 18:01:08,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 372.6ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:01:08,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104458 states. [2021-10-08 18:01:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104458 to 89180. [2021-10-08 18:01:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89180 states, 89179 states have (on average 5.686540553269268) internal successors, (507120), 89179 states have internal predecessors, (507120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89180 states to 89180 states and 507120 transitions. [2021-10-08 18:01:14,554 INFO L78 Accepts]: Start accepts. Automaton has 89180 states and 507120 transitions. Word has length 30 [2021-10-08 18:01:14,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:14,554 INFO L470 AbstractCegarLoop]: Abstraction has 89180 states and 507120 transitions. [2021-10-08 18:01:14,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 89180 states and 507120 transitions. [2021-10-08 18:01:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:01:15,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:15,618 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:15,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:15,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:15,832 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:01:15,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:15,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1077089537, now seen corresponding path program 26 times [2021-10-08 18:01:15,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:15,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034936598] [2021-10-08 18:01:15,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:01:15,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:15,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:15,834 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:15,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 18:01:16,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:01:16,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:16,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:01:16,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:16,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:16,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:16,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034936598] [2021-10-08 18:01:16,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034936598] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:16,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:16,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 18:01:16,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143860297] [2021-10-08 18:01:16,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:01:16,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:01:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:01:16,921 INFO L87 Difference]: Start difference. First operand 89180 states and 507120 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:21,241 INFO L93 Difference]: Finished difference Result 149374 states and 816395 transitions. [2021-10-08 18:01:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:01:21,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:01:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:23,149 INFO L225 Difference]: With dead ends: 149374 [2021-10-08 18:01:23,149 INFO L226 Difference]: Without dead ends: 148400 [2021-10-08 18:01:23,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 875.2ms TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:01:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148400 states. [2021-10-08 18:01:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148400 to 105870. [2021-10-08 18:01:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105870 states, 105869 states have (on average 5.795605890298388) internal successors, (613575), 105869 states have internal predecessors, (613575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105870 states to 105870 states and 613575 transitions. [2021-10-08 18:01:32,223 INFO L78 Accepts]: Start accepts. Automaton has 105870 states and 613575 transitions. Word has length 30 [2021-10-08 18:01:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:32,223 INFO L470 AbstractCegarLoop]: Abstraction has 105870 states and 613575 transitions. [2021-10-08 18:01:32,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 105870 states and 613575 transitions. [2021-10-08 18:01:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:01:33,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:33,228 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:33,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:33,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:33,442 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:01:33,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:33,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1817779950, now seen corresponding path program 27 times [2021-10-08 18:01:33,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:33,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686556302] [2021-10-08 18:01:33,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:01:33,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:33,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:33,445 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:33,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 18:01:34,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:01:34,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:34,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:01:34,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:01:34,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:01:34,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:34,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686556302] [2021-10-08 18:01:34,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686556302] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:34,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:34,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-08 18:01:34,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546506537] [2021-10-08 18:01:34,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:01:34,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:01:34,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:01:34,805 INFO L87 Difference]: Start difference. First operand 105870 states and 613575 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:43,064 INFO L93 Difference]: Finished difference Result 240866 states and 1353003 transitions. [2021-10-08 18:01:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 18:01:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:01:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:46,305 INFO L225 Difference]: With dead ends: 240866 [2021-10-08 18:01:46,305 INFO L226 Difference]: Without dead ends: 239316 [2021-10-08 18:01:46,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 832.8ms TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-10-08 18:01:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239316 states. [2021-10-08 18:01:58,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239316 to 165986. [2021-10-08 18:01:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165986 states, 165985 states have (on average 5.911534174774829) internal successors, (981226), 165985 states have internal predecessors, (981226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165986 states to 165986 states and 981226 transitions. [2021-10-08 18:02:02,267 INFO L78 Accepts]: Start accepts. Automaton has 165986 states and 981226 transitions. Word has length 30 [2021-10-08 18:02:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:02,267 INFO L470 AbstractCegarLoop]: Abstraction has 165986 states and 981226 transitions. [2021-10-08 18:02:02,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 165986 states and 981226 transitions. [2021-10-08 18:02:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:02:03,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:03,299 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:03,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:03,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:03,501 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:02:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:03,501 INFO L82 PathProgramCache]: Analyzing trace with hash 409412460, now seen corresponding path program 28 times [2021-10-08 18:02:03,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:03,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939001986] [2021-10-08 18:02:03,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:02:03,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:03,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:03,504 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:03,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 18:02:04,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:02:04,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:04,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:02:04,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:04,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:04,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:04,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939001986] [2021-10-08 18:02:04,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939001986] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:04,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:04,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 18:02:04,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663184824] [2021-10-08 18:02:04,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:02:04,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:04,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:02:04,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:02:04,896 INFO L87 Difference]: Start difference. First operand 165986 states and 981226 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:10,417 INFO L93 Difference]: Finished difference Result 228110 states and 1306388 transitions. [2021-10-08 18:02:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:02:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:02:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:13,373 INFO L225 Difference]: With dead ends: 228110 [2021-10-08 18:02:13,374 INFO L226 Difference]: Without dead ends: 227228 [2021-10-08 18:02:13,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 483.9ms TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:02:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227228 states. [2021-10-08 18:02:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227228 to 165230. [2021-10-08 18:02:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165230 states, 165229 states have (on average 5.90873272851618) internal successors, (976294), 165229 states have internal predecessors, (976294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165230 states to 165230 states and 976294 transitions. [2021-10-08 18:02:32,572 INFO L78 Accepts]: Start accepts. Automaton has 165230 states and 976294 transitions. Word has length 30 [2021-10-08 18:02:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:32,572 INFO L470 AbstractCegarLoop]: Abstraction has 165230 states and 976294 transitions. [2021-10-08 18:02:32,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 165230 states and 976294 transitions. [2021-10-08 18:02:34,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:02:34,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:34,228 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:34,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:34,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:34,429 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:02:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:34,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1778635348, now seen corresponding path program 29 times [2021-10-08 18:02:34,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:34,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035344133] [2021-10-08 18:02:34,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:02:34,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:34,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:34,434 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:34,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 18:02:34,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:02:34,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:34,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:02:34,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:35,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:35,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:35,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035344133] [2021-10-08 18:02:35,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035344133] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:35,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:35,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 18:02:35,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406579391] [2021-10-08 18:02:35,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:02:35,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:35,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:02:35,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:02:35,258 INFO L87 Difference]: Start difference. First operand 165230 states and 976294 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:41,096 INFO L93 Difference]: Finished difference Result 217750 states and 1274770 transitions. [2021-10-08 18:02:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 18:02:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 30 [2021-10-08 18:02:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:44,090 INFO L225 Difference]: With dead ends: 217750 [2021-10-08 18:02:44,090 INFO L226 Difference]: Without dead ends: 216614 [2021-10-08 18:02:44,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 356.9ms TimeCoverageRelationStatistics Valid=104, Invalid=168, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:02:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216614 states. [2021-10-08 18:02:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216614 to 180892. [2021-10-08 18:02:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180892 states, 180891 states have (on average 5.950998114886866) internal successors, (1076482), 180891 states have internal predecessors, (1076482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180892 states to 180892 states and 1076482 transitions. [2021-10-08 18:03:00,291 INFO L78 Accepts]: Start accepts. Automaton has 180892 states and 1076482 transitions. Word has length 30 [2021-10-08 18:03:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:00,292 INFO L470 AbstractCegarLoop]: Abstraction has 180892 states and 1076482 transitions. [2021-10-08 18:03:00,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 180892 states and 1076482 transitions. [2021-10-08 18:03:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 18:03:02,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:02,229 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:02,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:02,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:02,442 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 18:03:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash -679833134, now seen corresponding path program 30 times [2021-10-08 18:03:02,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:02,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224482416] [2021-10-08 18:03:02,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:03:02,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:02,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:02,446 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:03,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 18:03:03,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 18:03:03,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:03,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:03:03,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:03,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:04,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:04,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224482416] [2021-10-08 18:03:04,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224482416] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:04,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:04,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 18:03:04,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994589576] [2021-10-08 18:03:04,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 18:03:04,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 18:03:04,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:03:04,288 INFO L87 Difference]: Start difference. First operand 180892 states and 1076482 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:14,818 INFO L93 Difference]: Finished difference Result 278842 states and 1575805 transitions. [2021-10-08 18:03:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:03:14,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 18:03:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:20,059 INFO L225 Difference]: With dead ends: 278842 [2021-10-08 18:03:20,059 INFO L226 Difference]: Without dead ends: 278566 [2021-10-08 18:03:20,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1194.0ms TimeCoverageRelationStatistics Valid=314, Invalid=1092, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 18:03:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278566 states. [2021-10-08 18:03:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278566 to 195550. [2021-10-08 18:03:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195550 states, 195549 states have (on average 5.973280354284604) internal successors, (1168069), 195549 states have internal predecessors, (1168069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195550 states to 195550 states and 1168069 transitions. [2021-10-08 18:03:42,859 INFO L78 Accepts]: Start accepts. Automaton has 195550 states and 1168069 transitions. Word has length 30 [2021-10-08 18:03:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:42,859 INFO L470 AbstractCegarLoop]: Abstraction has 195550 states and 1168069 transitions. [2021-10-08 18:03:42,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:42,860 INFO L276 IsEmpty]: Start isEmpty. Operand 195550 states and 1168069 transitions.