/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/chl/exp-term-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:59:46,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:59:46,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:59:46,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:59:46,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 20:59:46,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 20:59:46,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 20:59:46,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 20:59:46,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 20:59:46,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 20:59:46,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 20:59:46,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 20:59:46,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 20:59:46,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 20:59:46,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 20:59:46,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 20:59:46,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 20:59:46,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 20:59:46,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 20:59:46,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 20:59:46,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:59:46,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:59:46,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:59:46,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:59:46,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:59:46,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:59:46,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:59:46,357 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:59:46,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:59:46,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:59:46,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:59:46,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:59:46,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:59:46,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:59:46,359 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:59:46,360 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:59:46,361 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:59:46,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:59:46,361 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:59:46,361 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:59:46,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:59:46,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:59:46,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:59:46,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:59:46,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:59:46,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:59:46,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:59:46,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:59:46,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:59:46,364 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:59:46,364 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:59:46,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:59:46,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:59:46,365 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:59:46,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:59:46,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:59:46,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:59:46,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:59:46,808 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:59:46,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/exp-term-subst.wvr.c [2021-10-06 20:59:46,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769d74432/26a2cd150029480bb6ffd19ce49e43c8/FLAG8fca2aa84 [2021-10-06 20:59:47,556 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:59:47,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/exp-term-subst.wvr.c [2021-10-06 20:59:47,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769d74432/26a2cd150029480bb6ffd19ce49e43c8/FLAG8fca2aa84 [2021-10-06 20:59:47,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769d74432/26a2cd150029480bb6ffd19ce49e43c8 [2021-10-06 20:59:47,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:59:47,953 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:59:47,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:59:47,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:59:47,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:59:47,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:59:47" (1/1) ... [2021-10-06 20:59:47,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289e4fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:47, skipping insertion in model container [2021-10-06 20:59:47,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:59:47" (1/1) ... [2021-10-06 20:59:47,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:59:48,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:59:48,284 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/chl/exp-term-subst.wvr.c[2972,2985] [2021-10-06 20:59:48,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:59:48,309 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:59:48,344 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/chl/exp-term-subst.wvr.c[2972,2985] [2021-10-06 20:59:48,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:59:48,365 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:59:48,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48 WrapperNode [2021-10-06 20:59:48,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:59:48,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:59:48,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:59:48,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:59:48,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:59:48,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:59:48,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:59:48,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:59:48,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:59:48,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:59:48,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:59:48,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:59:48,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (1/1) ... [2021-10-06 20:59:48,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:59:48,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:59:48,505 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) [2021-10-06 20:59:48,510 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 [2021-10-06 20:59:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:59:48,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:59:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:59:48,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:59:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 20:59:48,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 20:59:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:59:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:59:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:59:48,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:59:48,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:59:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:59:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:59:48,588 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:59:49,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:59:49,221 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-06 20:59:49,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:59:49 BoogieIcfgContainer [2021-10-06 20:59:49,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:59:49,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:59:49,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:59:49,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:59:49,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:59:47" (1/3) ... [2021-10-06 20:59:49,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2d0d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:59:49, skipping insertion in model container [2021-10-06 20:59:49,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:48" (2/3) ... [2021-10-06 20:59:49,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2d0d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:59:49, skipping insertion in model container [2021-10-06 20:59:49,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:59:49" (3/3) ... [2021-10-06 20:59:49,236 INFO L111 eAbstractionObserver]: Analyzing ICFG exp-term-subst.wvr.c [2021-10-06 20:59:49,244 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:59:49,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 20:59:49,245 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:59:49,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,373 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,374 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,374 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,374 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,374 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,375 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,380 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,385 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,385 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,385 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,386 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,386 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,386 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,386 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,399 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,399 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,400 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,405 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,407 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,408 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,408 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,408 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,409 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,409 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,410 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,410 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,411 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,421 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,442 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,442 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:49,464 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 20:59:49,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:59:49,535 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 [2021-10-06 20:59:49,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 20:59:49,556 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:59:49,569 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 150 transitions, 324 flow [2021-10-06 20:59:49,573 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 150 transitions, 324 flow [2021-10-06 20:59:49,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 150 transitions, 324 flow [2021-10-06 20:59:49,677 INFO L129 PetriNetUnfolder]: 11/147 cut-off events. [2021-10-06 20:59:49,677 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 20:59:49,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 11/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2021-10-06 20:59:49,700 INFO L116 LiptonReduction]: Number of co-enabled transitions 3570 [2021-10-06 21:00:04,724 INFO L131 LiptonReduction]: Checked pairs total: 3661 [2021-10-06 21:00:04,724 INFO L133 LiptonReduction]: Total number of compositions: 170 [2021-10-06 21:00:04,734 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 33 transitions, 90 flow [2021-10-06 21:00:04,751 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:00:04,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:04,760 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:00:04,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 598, now seen corresponding path program 1 times [2021-10-06 21:00:04,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:04,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000307801] [2021-10-06 21:00:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:04,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:04,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:04,787 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) [2021-10-06 21:00:04,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:00:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:04,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:00:04,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:04,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:04,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:04,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000307801] [2021-10-06 21:00:04,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000307801] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:04,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:04,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:00:04,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628366296] [2021-10-06 21:00:04,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:00:04,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:00:04,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:00:04,935 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 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) [2021-10-06 21:00:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:04,958 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2021-10-06 21:00:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:00:04,960 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 [2021-10-06 21:00:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:04,973 INFO L225 Difference]: With dead ends: 84 [2021-10-06 21:00:04,973 INFO L226 Difference]: Without dead ends: 84 [2021-10-06 21:00:04,974 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 [2021-10-06 21:00:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-06 21:00:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-06 21:00:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 83 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2021-10-06 21:00:05,018 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 1 [2021-10-06 21:00:05,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:05,019 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2021-10-06 21:00:05,019 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) [2021-10-06 21:00:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2021-10-06 21:00:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:00:05,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:05,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:00:05,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:05,232 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 [2021-10-06 21:00:05,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 586450, now seen corresponding path program 1 times [2021-10-06 21:00:05,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:05,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665669563] [2021-10-06 21:00:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:05,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:05,238 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) [2021-10-06 21:00:05,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:00:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:05,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:00:05,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:05,689 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:00:05,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:00:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:05,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:05,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:05,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665669563] [2021-10-06 21:00:05,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665669563] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:05,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:05,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:00:05,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577813586] [2021-10-06 21:00:05,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:00:05,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:00:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:00:05,920 INFO L87 Difference]: Start difference. First operand 84 states and 164 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) [2021-10-06 21:00:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:05,976 INFO L93 Difference]: Finished difference Result 78 states and 153 transitions. [2021-10-06 21:00:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:00:05,977 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 [2021-10-06 21:00:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:05,979 INFO L225 Difference]: With dead ends: 78 [2021-10-06 21:00:05,979 INFO L226 Difference]: Without dead ends: 78 [2021-10-06 21:00:05,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:00:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-06 21:00:05,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-06 21:00:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.217391304347826) internal successors, (153), 77 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 153 transitions. [2021-10-06 21:00:05,990 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 153 transitions. Word has length 3 [2021-10-06 21:00:05,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:05,991 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 153 transitions. [2021-10-06 21:00:05,991 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) [2021-10-06 21:00:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 153 transitions. [2021-10-06 21:00:05,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:00:05,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:05,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:00:06,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:06,203 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 [2021-10-06 21:00:06,204 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash 586451, now seen corresponding path program 1 times [2021-10-06 21:00:06,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:06,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071995925] [2021-10-06 21:00:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:06,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:06,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:06,208 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) [2021-10-06 21:00:06,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:00:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:06,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:00:06,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:06,319 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:00:06,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:00:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:06,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:06,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:06,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071995925] [2021-10-06 21:00:06,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071995925] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:06,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:06,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:00:06,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118820661] [2021-10-06 21:00:06,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:00:06,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:00:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:00:06,381 INFO L87 Difference]: Start difference. First operand 78 states and 153 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:06,423 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2021-10-06 21:00:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:00:06,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:00:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:06,426 INFO L225 Difference]: With dead ends: 72 [2021-10-06 21:00:06,426 INFO L226 Difference]: Without dead ends: 72 [2021-10-06 21:00:06,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:00:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-06 21:00:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-06 21:00:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 71 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2021-10-06 21:00:06,439 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 3 [2021-10-06 21:00:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:06,439 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2021-10-06 21:00:06,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:06,439 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2021-10-06 21:00:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:00:06,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:06,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:00:06,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:06,643 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 [2021-10-06 21:00:06,644 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:06,645 INFO L82 PathProgramCache]: Analyzing trace with hash 563590163, now seen corresponding path program 1 times [2021-10-06 21:00:06,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:06,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322438050] [2021-10-06 21:00:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:06,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:06,649 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) [2021-10-06 21:00:06,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:00:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:06,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:00:06,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:06,758 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:00:06,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:00:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:06,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:06,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:06,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322438050] [2021-10-06 21:00:06,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322438050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:06,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:06,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:00:06,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158605836] [2021-10-06 21:00:06,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:00:06,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:00:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:00:06,833 INFO L87 Difference]: Start difference. First operand 72 states and 142 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:06,882 INFO L93 Difference]: Finished difference Result 66 states and 131 transitions. [2021-10-06 21:00:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:00:06,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:00:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:06,884 INFO L225 Difference]: With dead ends: 66 [2021-10-06 21:00:06,884 INFO L226 Difference]: Without dead ends: 66 [2021-10-06 21:00:06,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:00:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-06 21:00:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-06 21:00:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 2.1475409836065573) internal successors, (131), 65 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2021-10-06 21:00:06,895 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 5 [2021-10-06 21:00:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:06,896 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2021-10-06 21:00:06,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:06,896 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2021-10-06 21:00:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:00:06,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:06,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:00:06,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:07,102 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 [2021-10-06 21:00:07,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:07,104 INFO L82 PathProgramCache]: Analyzing trace with hash 563590165, now seen corresponding path program 1 times [2021-10-06 21:00:07,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:07,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899263870] [2021-10-06 21:00:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:07,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:07,108 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) [2021-10-06 21:00:07,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:00:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:07,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:00:07,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:07,325 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:00:07,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:00:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:07,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:07,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:07,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899263870] [2021-10-06 21:00:07,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899263870] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:07,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:07,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:00:07,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330416167] [2021-10-06 21:00:07,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:00:07,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:00:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:00:07,552 INFO L87 Difference]: Start difference. First operand 66 states and 131 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) [2021-10-06 21:00:07,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:07,581 INFO L93 Difference]: Finished difference Result 60 states and 120 transitions. [2021-10-06 21:00:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:00:07,582 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 [2021-10-06 21:00:07,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:07,583 INFO L225 Difference]: With dead ends: 60 [2021-10-06 21:00:07,583 INFO L226 Difference]: Without dead ends: 60 [2021-10-06 21:00:07,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:00:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-06 21:00:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-06 21:00:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 59 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2021-10-06 21:00:07,590 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 5 [2021-10-06 21:00:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:07,590 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2021-10-06 21:00:07,591 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) [2021-10-06 21:00:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2021-10-06 21:00:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:00:07,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:07,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:07,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:07,792 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 [2021-10-06 21:00:07,793 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:07,794 INFO L82 PathProgramCache]: Analyzing trace with hash 444281073, now seen corresponding path program 1 times [2021-10-06 21:00:07,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:07,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787764799] [2021-10-06 21:00:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:07,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:07,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:07,797 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) [2021-10-06 21:00:07,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:00:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:00:07,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:07,901 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:00:07,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:00:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:07,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:08,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:08,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787764799] [2021-10-06 21:00:08,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787764799] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:08,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:08,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:00:08,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519144560] [2021-10-06 21:00:08,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:00:08,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:00:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:00:08,012 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:08,047 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2021-10-06 21:00:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:00:08,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:00:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:08,048 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:00:08,049 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:00:08,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:00:08,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:00:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:00:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2021-10-06 21:00:08,054 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 7 [2021-10-06 21:00:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:08,054 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2021-10-06 21:00:08,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2021-10-06 21:00:08,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:00:08,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:08,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:08,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:08,256 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 [2021-10-06 21:00:08,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:08,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:08,258 INFO L82 PathProgramCache]: Analyzing trace with hash 444281074, now seen corresponding path program 1 times [2021-10-06 21:00:08,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:08,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326704214] [2021-10-06 21:00:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:08,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:08,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:08,261 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) [2021-10-06 21:00:08,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:00:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:08,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:00:08,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:08,483 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:00:08,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 58 [2021-10-06 21:00:08,494 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 59 treesize of output 57 [2021-10-06 21:00:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:08,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:08,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:08,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326704214] [2021-10-06 21:00:08,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326704214] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:08,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:08,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:00:08,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949655848] [2021-10-06 21:00:08,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:00:08,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:00:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:00:08,819 INFO L87 Difference]: Start difference. First operand 52 states and 100 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) [2021-10-06 21:00:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:08,842 INFO L93 Difference]: Finished difference Result 44 states and 80 transitions. [2021-10-06 21:00:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:00:08,843 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 [2021-10-06 21:00:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:08,844 INFO L225 Difference]: With dead ends: 44 [2021-10-06 21:00:08,844 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 21:00:08,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:00:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 21:00:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-06 21:00:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 80 transitions. [2021-10-06 21:00:08,848 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 80 transitions. Word has length 7 [2021-10-06 21:00:08,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:08,848 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 80 transitions. [2021-10-06 21:00:08,848 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) [2021-10-06 21:00:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 80 transitions. [2021-10-06 21:00:08,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:00:08,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:08,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:08,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:09,059 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 [2021-10-06 21:00:09,060 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222023, now seen corresponding path program 1 times [2021-10-06 21:00:09,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:09,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576025035] [2021-10-06 21:00:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:09,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:09,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:09,064 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) [2021-10-06 21:00:09,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:00:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:09,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:00:09,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:11,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:13,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:13,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576025035] [2021-10-06 21:00:13,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576025035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:13,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:13,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:00:13,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127311153] [2021-10-06 21:00:13,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:00:13,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:00:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:00:13,810 INFO L87 Difference]: Start difference. First operand 44 states and 80 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:14,775 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-10-06 21:00:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:00:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:00:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:14,777 INFO L225 Difference]: With dead ends: 67 [2021-10-06 21:00:14,777 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:00:14,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1757.7ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:00:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:00:14,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-06 21:00:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2021-10-06 21:00:14,782 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2021-10-06 21:00:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:14,782 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2021-10-06 21:00:14,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2021-10-06 21:00:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:00:14,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:14,784 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:14,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:14,997 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 [2021-10-06 21:00:14,998 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:14,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:14,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1792285269, now seen corresponding path program 2 times [2021-10-06 21:00:15,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:15,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925125812] [2021-10-06 21:00:15,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:00:15,001 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:15,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:15,002 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) [2021-10-06 21:00:15,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:00:15,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:00:15,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:15,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:00:15,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:17,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:18,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:18,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925125812] [2021-10-06 21:00:18,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925125812] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:18,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:18,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:00:18,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564068773] [2021-10-06 21:00:18,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:00:18,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:18,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:00:18,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:00:18,859 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:19,402 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2021-10-06 21:00:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:00:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:00:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:19,404 INFO L225 Difference]: With dead ends: 63 [2021-10-06 21:00:19,404 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 21:00:19,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1141.3ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:00:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 21:00:19,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-10-06 21:00:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-06 21:00:19,409 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-06 21:00:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:19,410 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-06 21:00:19,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-06 21:00:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:00:19,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:19,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:19,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:19,622 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 [2021-10-06 21:00:19,622 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:19,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1499136731, now seen corresponding path program 3 times [2021-10-06 21:00:19,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:19,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115203221] [2021-10-06 21:00:19,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:19,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:19,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:19,627 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) [2021-10-06 21:00:19,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:00:19,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:00:19,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:19,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:00:19,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:22,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:24,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:24,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115203221] [2021-10-06 21:00:24,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115203221] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:24,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:24,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:00:24,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302479972] [2021-10-06 21:00:24,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:00:24,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:24,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:00:24,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:00:24,480 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-10-06 21:00:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:25,334 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-10-06 21:00:25,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:00:25,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:00:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:25,336 INFO L225 Difference]: With dead ends: 51 [2021-10-06 21:00:25,336 INFO L226 Difference]: Without dead ends: 36 [2021-10-06 21:00:25,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1624.1ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:00:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-06 21:00:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-06 21:00:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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) [2021-10-06 21:00:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-10-06 21:00:25,339 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2021-10-06 21:00:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:25,339 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-06 21:00:25,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-10-06 21:00:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-10-06 21:00:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:00:25,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:25,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:25,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:25,554 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 [2021-10-06 21:00:25,554 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1856188983, now seen corresponding path program 4 times [2021-10-06 21:00:25,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:25,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299243568] [2021-10-06 21:00:25,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:25,557 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:25,558 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) [2021-10-06 21:00:25,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:00:25,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:25,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:25,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:00:25,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:27,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:29,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:29,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299243568] [2021-10-06 21:00:29,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299243568] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:29,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:29,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:00:29,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499880670] [2021-10-06 21:00:29,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:00:29,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:29,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:00:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:00:29,373 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-10-06 21:00:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:30,042 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-10-06 21:00:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:00:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:00:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:30,044 INFO L225 Difference]: With dead ends: 37 [2021-10-06 21:00:30,044 INFO L226 Difference]: Without dead ends: 24 [2021-10-06 21:00:30,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1262.9ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:00:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-06 21:00:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-06 21:00:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-10-06 21:00:30,046 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2021-10-06 21:00:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:30,046 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-10-06 21:00:30,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-10-06 21:00:30,047 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-10-06 21:00:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:00:30,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:30,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:30,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:30,256 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 [2021-10-06 21:00:30,257 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:30,258 INFO L82 PathProgramCache]: Analyzing trace with hash 798327869, now seen corresponding path program 5 times [2021-10-06 21:00:30,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:30,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924796669] [2021-10-06 21:00:30,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:00:30,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:30,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:30,262 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) [2021-10-06 21:00:30,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:00:30,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:00:30,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:30,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:00:30,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:32,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:34,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:34,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924796669] [2021-10-06 21:00:34,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924796669] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:34,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:34,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:00:34,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682727742] [2021-10-06 21:00:34,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:00:34,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:00:34,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:00:34,081 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-10-06 21:00:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:34,929 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-06 21:00:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:00:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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 16 [2021-10-06 21:00:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:34,931 INFO L225 Difference]: With dead ends: 31 [2021-10-06 21:00:34,931 INFO L226 Difference]: Without dead ends: 20 [2021-10-06 21:00:34,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1633.0ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:00:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-06 21:00:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-06 21:00:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-06 21:00:34,934 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2021-10-06 21:00:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:34,934 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-06 21:00:34,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-10-06 21:00:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-06 21:00:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:00:34,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:34,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:34,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:35,139 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 [2021-10-06 21:00:35,140 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:00:35,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:35,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1653634523, now seen corresponding path program 6 times [2021-10-06 21:00:35,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:35,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127405635] [2021-10-06 21:00:35,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:00:35,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:35,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:35,144 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) [2021-10-06 21:00:35,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:00:35,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:00:35,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:35,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:00:35,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:37,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:38,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127405635] [2021-10-06 21:00:38,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127405635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:00:38,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:00:38,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:00:38,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902459371] [2021-10-06 21:00:38,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:00:38,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:00:38,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:00:38,788 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-10-06 21:00:39,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:39,882 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-06 21:00:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:00:39,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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 16 [2021-10-06 21:00:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:39,883 INFO L225 Difference]: With dead ends: 19 [2021-10-06 21:00:39,883 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:00:39,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1754.2ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:00:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:00:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:00:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:00:39,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-06 21:00:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:39,885 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:00:39,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-10-06 21:00:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:00:39,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:00:39,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:00:39,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:00:39,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:00:39,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:00:39,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:00:39,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:00:39,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:00:39,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:00:39,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:00:39,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:00:39,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:00:39,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:00:39,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:00:39,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:00:39,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:00:39,891 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:00:39,891 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:00:39,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-06 21:00:40,098 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 [2021-10-06 21:00:40,105 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:00:40,105 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:00:40,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:00:40 BasicIcfg [2021-10-06 21:00:40,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:00:40,109 INFO L168 Benchmark]: Toolchain (without parser) took 52163.86 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.4 MB in the beginning and 70.5 MB in the end (delta: 54.8 MB). Peak memory consumption was 86.3 MB. Max. memory is 8.0 GB. [2021-10-06 21:00:40,109 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:00:40,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.49 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:00:40,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 112.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:00:40,111 INFO L168 Benchmark]: Boogie Preprocessor took 36.95 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 111.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:00:40,111 INFO L168 Benchmark]: RCFGBuilder took 771.59 ms. Allocated memory is still 151.0 MB. Free memory was 111.0 MB in the beginning and 95.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:00:40,111 INFO L168 Benchmark]: TraceAbstraction took 50881.61 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.4 MB in the beginning and 70.5 MB in the end (delta: 24.9 MB). Peak memory consumption was 57.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:00:40,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 410.49 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 112.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.95 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 111.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 771.59 ms. Allocated memory is still 151.0 MB. Free memory was 111.0 MB in the beginning and 95.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50881.61 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.4 MB in the beginning and 70.5 MB in the end (delta: 24.9 MB). Peak memory consumption was 57.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15151.4ms, 149 PlacesBefore, 43 PlacesAfterwards, 150 TransitionsBefore, 33 TransitionsAfterwards, 3570 CoEnabledTransitionPairs, 6 FixpointIterations, 69 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 25 ConcurrentYvCompositions, 11 ChoiceCompositions, 170 TotalNumberOfCompositions, 3661 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3661, positive: 3661, positive conditional: 0, positive unconditional: 3661, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2675, positive: 2675, positive conditional: 0, positive unconditional: 2675, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2675, positive: 2675, positive conditional: 0, positive unconditional: 2675, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3661, positive: 986, positive conditional: 0, positive unconditional: 986, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2675, unknown conditional: 0, unknown unconditional: 2675] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 73]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 53]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 188 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 50578.2ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 15.8ms, AutomataDifference: 5316.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15215.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 236 SDtfs, 350 SDslu, 307 SDs, 0 SdLazy, 191 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 748.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 176 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 9355.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 87.6ms AutomataMinimizationTime, 13 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 158.5ms SsaConstructionTime, 949.1ms SatisfiabilityAnalysisTime, 24623.1ms InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 228 ConstructedInterpolants, 45 QuantifiedInterpolants, 8221 SizeOfPredicates, 100 NumberOfNonLiveVariables, 751 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 21:00:40,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...