/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/parallel/misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:19:41,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:19:41,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:19:41,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:19:41,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:19:41,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:19:41,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:19:41,526 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 21:19:41,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:19:41,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:19:41,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:19:41,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:19:41,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:19:41,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:19:41,593 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:19:41,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:19:41,593 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:19:41,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:19:41,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:19:41,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:19:41,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:19:41,596 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:19:41,596 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:19:41,596 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:19:41,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:19:41,597 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:19:41,597 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:19:41,597 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:19:41,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:19:41,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:19:41,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:19:41,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:19:41,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:19:41,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:19:41,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:19:41,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:19:41,600 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:19:41,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:19:41,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:19:41,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:19:41,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:19:42,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:19:42,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:19:42,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:19:42,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:19:42,100 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:19:42,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/misc-3.wvr.c [2021-10-06 21:19:42,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/731355980/b9571b87ddab45adb7a853b5827eaa6e/FLAG603f49fe6 [2021-10-06 21:19:42,884 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:19:42,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-3.wvr.c [2021-10-06 21:19:42,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/731355980/b9571b87ddab45adb7a853b5827eaa6e/FLAG603f49fe6 [2021-10-06 21:19:43,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/731355980/b9571b87ddab45adb7a853b5827eaa6e [2021-10-06 21:19:43,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:19:43,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:19:43,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:19:43,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:19:43,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:19:43,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c02547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43, skipping insertion in model container [2021-10-06 21:19:43,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:19:43,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:19:43,429 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/parallel/misc-3.wvr.c[2254,2267] [2021-10-06 21:19:43,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:19:43,449 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:19:43,476 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/parallel/misc-3.wvr.c[2254,2267] [2021-10-06 21:19:43,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:19:43,501 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:19:43,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43 WrapperNode [2021-10-06 21:19:43,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:19:43,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:19:43,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:19:43,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:19:43,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:19:43,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:19:43,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:19:43,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:19:43,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:19:43,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:19:43,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:19:43,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:19:43,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (1/1) ... [2021-10-06 21:19:43,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:19:43,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:19:43,709 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 21:19:43,735 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 21:19:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:19:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:19:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:19:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:19:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:19:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:19:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:19:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:19:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:19:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:19:43,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:19:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:19:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:19:43,810 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 21:19:44,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:19:44,335 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-06 21:19:44,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:19:44 BoogieIcfgContainer [2021-10-06 21:19:44,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:19:44,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:19:44,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:19:44,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:19:44,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:19:43" (1/3) ... [2021-10-06 21:19:44,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7e8187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:19:44, skipping insertion in model container [2021-10-06 21:19:44,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:43" (2/3) ... [2021-10-06 21:19:44,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7e8187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:19:44, skipping insertion in model container [2021-10-06 21:19:44,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:19:44" (3/3) ... [2021-10-06 21:19:44,350 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3.wvr.c [2021-10-06 21:19:44,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:19:44,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:19:44,357 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:19:44,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,436 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,443 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,443 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,444 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,444 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:44,459 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:19:44,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:19:44,552 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 21:19:44,553 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:19:44,578 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:19:44,591 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 98 transitions, 212 flow [2021-10-06 21:19:44,599 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 98 transitions, 212 flow [2021-10-06 21:19:44,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 212 flow [2021-10-06 21:19:44,677 INFO L129 PetriNetUnfolder]: 11/96 cut-off events. [2021-10-06 21:19:44,677 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:19:44,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 11/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 52. Up to 4 conditions per place. [2021-10-06 21:19:44,691 INFO L116 LiptonReduction]: Number of co-enabled transitions 1360 [2021-10-06 21:19:54,059 INFO L131 LiptonReduction]: Checked pairs total: 1350 [2021-10-06 21:19:54,061 INFO L133 LiptonReduction]: Total number of compositions: 106 [2021-10-06 21:19:54,076 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-06 21:19:54,091 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 21:19:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 21:19:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:19:54,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:54,107 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:19:54,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:54,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:54,116 INFO L82 PathProgramCache]: Analyzing trace with hash 421, now seen corresponding path program 1 times [2021-10-06 21:19:54,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:54,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250495585] [2021-10-06 21:19:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:54,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:54,134 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 21:19:54,136 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 21:19:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:54,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:19:54,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:54,198 INFO 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 21:19:54,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:54,200 INFO 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 21:19:54,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:54,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250495585] [2021-10-06 21:19:54,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250495585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:54,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:54,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:19:54,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078906952] [2021-10-06 21:19:54,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:19:54,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:19:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:19:54,229 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 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 21:19:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:54,244 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2021-10-06 21:19:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:19:54,246 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 21:19:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:54,256 INFO L225 Difference]: With dead ends: 36 [2021-10-06 21:19:54,256 INFO L226 Difference]: Without dead ends: 36 [2021-10-06 21:19:54,258 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 21:19:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-06 21:19:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-06 21:19:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 35 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 21:19:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2021-10-06 21:19:54,297 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2021-10-06 21:19:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:54,298 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2021-10-06 21:19:54,298 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 21:19:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2021-10-06 21:19:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:19:54,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:54,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:19:54,312 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 21:19:54,508 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 21:19:54,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:54,511 INFO L82 PathProgramCache]: Analyzing trace with hash 412765, now seen corresponding path program 1 times [2021-10-06 21:19:54,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:54,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960402043] [2021-10-06 21:19:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:54,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:54,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:54,514 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 21:19:54,519 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 21:19:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:54,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:19:54,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:54,822 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:19:54,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:19:55,204 INFO 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 21:19:55,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:55,216 INFO 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 21:19:55,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:55,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960402043] [2021-10-06 21:19:55,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960402043] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:55,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:55,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:19:55,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585204699] [2021-10-06 21:19:55,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:19:55,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:19:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:55,235 INFO L87 Difference]: Start difference. First operand 36 states and 80 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 21:19:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:55,274 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2021-10-06 21:19:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:55,274 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 21:19:55,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:55,278 INFO L225 Difference]: With dead ends: 32 [2021-10-06 21:19:55,278 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:19:55,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:19:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:19:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 21:19:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2021-10-06 21:19:55,295 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2021-10-06 21:19:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:55,296 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2021-10-06 21:19:55,296 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 21:19:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2021-10-06 21:19:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:19:55,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:55,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:19:55,314 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 21:19:55,510 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 21:19:55,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash 412766, now seen corresponding path program 1 times [2021-10-06 21:19:55,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:55,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058812770] [2021-10-06 21:19:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:55,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:55,515 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 21:19:55,522 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 21:19:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:55,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:19:55,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:55,671 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:19:55,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:19:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:55,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:55,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:55,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058812770] [2021-10-06 21:19:55,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058812770] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:55,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:55,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:19:55,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944977954] [2021-10-06 21:19:55,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:19:55,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:55,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:19:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:55,800 INFO L87 Difference]: Start difference. First operand 32 states and 72 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 21:19:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:55,825 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2021-10-06 21:19:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:55,826 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 21:19:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:55,827 INFO L225 Difference]: With dead ends: 28 [2021-10-06 21:19:55,827 INFO L226 Difference]: Without dead ends: 28 [2021-10-06 21:19:55,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:55,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-06 21:19:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-06 21:19:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 21:19:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2021-10-06 21:19:55,833 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2021-10-06 21:19:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:55,834 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2021-10-06 21:19:55,834 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 21:19:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2021-10-06 21:19:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:19:55,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:55,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:19:55,849 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 21:19:56,036 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 21:19:56,037 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:56,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:56,038 INFO L82 PathProgramCache]: Analyzing trace with hash 396678150, now seen corresponding path program 1 times [2021-10-06 21:19:56,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:56,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651348067] [2021-10-06 21:19:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:56,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:56,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:56,041 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 21:19:56,058 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 21:19:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:56,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:19:56,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:56,200 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-06 21:19:56,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 51 [2021-10-06 21:19:56,214 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 182 treesize of output 174 [2021-10-06 21:19:56,405 INFO 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 21:19:56,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:56,482 INFO 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 21:19:56,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:56,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651348067] [2021-10-06 21:19:56,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651348067] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:56,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:56,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:19:56,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497674066] [2021-10-06 21:19:56,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:19:56,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:19:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:56,486 INFO L87 Difference]: Start difference. First operand 28 states and 64 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 21:19:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:56,508 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2021-10-06 21:19:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:56,509 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 21:19:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:56,510 INFO L225 Difference]: With dead ends: 24 [2021-10-06 21:19:56,510 INFO L226 Difference]: Without dead ends: 24 [2021-10-06 21:19:56,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-06 21:19:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-06 21:19:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 21:19:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2021-10-06 21:19:56,515 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2021-10-06 21:19:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:56,515 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2021-10-06 21:19:56,515 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 21:19:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2021-10-06 21:19:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:19:56,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:56,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:19:56,530 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 21:19:56,725 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 21:19:56,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash 396678149, now seen corresponding path program 1 times [2021-10-06 21:19:56,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:56,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150204880] [2021-10-06 21:19:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:56,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:56,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:56,730 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 21:19:56,765 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 21:19:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:56,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:19:56,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:56,900 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:19:56,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:19:57,170 INFO 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 21:19:57,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:57,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:57,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150204880] [2021-10-06 21:19:57,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150204880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:57,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:57,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:19:57,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796909260] [2021-10-06 21:19:57,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:19:57,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:19:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:57,190 INFO L87 Difference]: Start difference. First operand 24 states and 52 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 21:19:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:57,203 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2021-10-06 21:19:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:57,204 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 21:19:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:57,204 INFO L225 Difference]: With dead ends: 20 [2021-10-06 21:19:57,205 INFO L226 Difference]: Without dead ends: 20 [2021-10-06 21:19:57,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-06 21:19:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-06 21:19:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 21:19:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2021-10-06 21:19:57,209 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2021-10-06 21:19:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:57,209 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2021-10-06 21:19:57,209 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 21:19:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2021-10-06 21:19:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:19:57,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:57,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:57,227 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 21:19:57,422 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 21:19:57,423 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:57,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:57,425 INFO L82 PathProgramCache]: Analyzing trace with hash -315609498, now seen corresponding path program 1 times [2021-10-06 21:19:57,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:57,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45267584] [2021-10-06 21:19:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:57,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:57,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:57,427 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 21:19:57,435 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 21:19:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:19:57,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:57,511 INFO 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 21:19:57,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:57,538 INFO 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 21:19:57,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:57,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45267584] [2021-10-06 21:19:57,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45267584] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:57,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:57,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:19:57,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473957174] [2021-10-06 21:19:57,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:19:57,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:57,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:19:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:57,544 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) 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 21:19:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:57,557 INFO L93 Difference]: Finished difference Result 26 states and 54 transitions. [2021-10-06 21:19:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) 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 11 [2021-10-06 21:19:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:57,560 INFO L225 Difference]: With dead ends: 26 [2021-10-06 21:19:57,561 INFO L226 Difference]: Without dead ends: 26 [2021-10-06 21:19:57,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-06 21:19:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-06 21:19:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 54 transitions. [2021-10-06 21:19:57,566 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 54 transitions. Word has length 11 [2021-10-06 21:19:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:57,567 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 54 transitions. [2021-10-06 21:19:57,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) 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 21:19:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 54 transitions. [2021-10-06 21:19:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:19:57,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:57,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:57,580 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 21:19:57,779 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 21:19:57,780 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:57,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1083058810, now seen corresponding path program 1 times [2021-10-06 21:19:57,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:57,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494531755] [2021-10-06 21:19:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:57,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:57,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:57,784 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 21:19:57,814 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 21:19:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:57,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:19:57,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:19:57,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:19:57,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:57,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494531755] [2021-10-06 21:19:57,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494531755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:57,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:57,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:19:57,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11867762] [2021-10-06 21:19:57,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:19:57,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:19:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:57,913 INFO L87 Difference]: Start difference. First operand 26 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:57,927 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 21:19:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:19:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:57,929 INFO L225 Difference]: With dead ends: 34 [2021-10-06 21:19:57,929 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 21:19:57,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 21:19:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 21:19:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 21:19:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 21:19:57,947 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 12 [2021-10-06 21:19:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:57,950 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 21:19:57,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 21:19:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:19:57,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:57,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:57,965 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 21:19:58,165 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 21:19:58,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:58,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1402113611, now seen corresponding path program 1 times [2021-10-06 21:19:58,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:58,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586955358] [2021-10-06 21:19:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:58,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:58,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:58,169 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 21:19:58,170 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 21:19:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:58,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:19:58,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:19:58,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:19:58,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:58,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586955358] [2021-10-06 21:19:58,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586955358] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:58,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:58,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:19:58,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20323311] [2021-10-06 21:19:58,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:19:58,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:19:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:58,402 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:58,426 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2021-10-06 21:19:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:19:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:19:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:58,428 INFO L225 Difference]: With dead ends: 42 [2021-10-06 21:19:58,428 INFO L226 Difference]: Without dead ends: 42 [2021-10-06 21:19:58,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-06 21:19:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-06 21:19:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 21:19:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-06 21:19:58,433 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-06 21:19:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:58,434 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-06 21:19:58,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:58,434 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-06 21:19:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:19:58,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:58,435 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:58,454 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 21:19:58,652 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 21:19:58,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 330980503, now seen corresponding path program 2 times [2021-10-06 21:19:58,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:58,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754916734] [2021-10-06 21:19:58,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:19:58,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:58,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:58,658 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 21:19:58,660 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 21:19:58,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:19:58,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:58,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:19:58,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:19:58,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:19:59,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:59,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754916734] [2021-10-06 21:19:59,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754916734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:59,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:59,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:19:59,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879247641] [2021-10-06 21:19:59,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:19:59,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:19:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:59,004 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 21:19:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:59,024 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-06 21:19:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:19:59,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:19:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:59,025 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:19:59,026 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:19:59,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:19:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:19:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 21:19:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-06 21:19:59,031 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-06 21:19:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:59,032 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-06 21:19:59,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 21:19:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-06 21:19:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:19:59,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:59,033 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:59,049 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 21:19:59,245 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 21:19:59,246 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1671271322, now seen corresponding path program 3 times [2021-10-06 21:19:59,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:59,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776757822] [2021-10-06 21:19:59,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:19:59,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:59,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:59,250 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 21:19:59,262 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 21:19:59,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:19:59,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:59,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:19:59,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:59,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:19:59,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:59,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776757822] [2021-10-06 21:19:59,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776757822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:59,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:59,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-10-06 21:19:59,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368754316] [2021-10-06 21:19:59,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:19:59,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:59,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:19:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:19:59,908 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 21:20:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:00,335 INFO L93 Difference]: Finished difference Result 199 states and 429 transitions. [2021-10-06 21:20:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:20:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:20:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:00,338 INFO L225 Difference]: With dead ends: 199 [2021-10-06 21:20:00,338 INFO L226 Difference]: Without dead ends: 184 [2021-10-06 21:20:00,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 402.5ms TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:20:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-06 21:20:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 106. [2021-10-06 21:20:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.6) internal successors, (273), 105 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 21:20:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 273 transitions. [2021-10-06 21:20:00,350 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 273 transitions. Word has length 15 [2021-10-06 21:20:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:00,350 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 273 transitions. [2021-10-06 21:20:00,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 21:20:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 273 transitions. [2021-10-06 21:20:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:20:00,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:00,353 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:00,367 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 21:20:00,565 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 21:20:00,566 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:00,567 INFO L82 PathProgramCache]: Analyzing trace with hash 358196430, now seen corresponding path program 4 times [2021-10-06 21:20:00,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:00,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650624149] [2021-10-06 21:20:00,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:20:00,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:00,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:00,570 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 21:20:00,571 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 21:20:00,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:20:00,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:00,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:20:00,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:00,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:01,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:01,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650624149] [2021-10-06 21:20:01,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650624149] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:01,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:01,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:20:01,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415768615] [2021-10-06 21:20:01,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:20:01,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:01,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:20:01,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:20:01,347 INFO L87 Difference]: Start difference. First operand 106 states and 273 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 21:20:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:01,915 INFO L93 Difference]: Finished difference Result 277 states and 654 transitions. [2021-10-06 21:20:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:20:01,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:20:01,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:01,918 INFO L225 Difference]: With dead ends: 277 [2021-10-06 21:20:01,918 INFO L226 Difference]: Without dead ends: 250 [2021-10-06 21:20:01,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 541.2ms TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:20:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-06 21:20:01,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 132. [2021-10-06 21:20:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.8244274809160306) internal successors, (370), 131 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 21:20:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 370 transitions. [2021-10-06 21:20:01,931 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 370 transitions. Word has length 15 [2021-10-06 21:20:01,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:01,932 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 370 transitions. [2021-10-06 21:20:01,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 21:20:01,932 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 370 transitions. [2021-10-06 21:20:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:20:01,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:01,934 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:01,951 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 21:20:02,151 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 21:20:02,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1124194364, now seen corresponding path program 5 times [2021-10-06 21:20:02,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:02,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800896526] [2021-10-06 21:20:02,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:20:02,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:02,155 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 21:20:02,156 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 21:20:02,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:20:02,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:02,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:20:02,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:02,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:20:02,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:02,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800896526] [2021-10-06 21:20:02,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800896526] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:02,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:02,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-06 21:20:02,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548900693] [2021-10-06 21:20:02,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:20:02,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:20:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:20:02,940 INFO L87 Difference]: Start difference. First operand 132 states and 370 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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 21:20:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:03,181 INFO L93 Difference]: Finished difference Result 235 states and 592 transitions. [2021-10-06 21:20:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:20:03,182 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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 15 [2021-10-06 21:20:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:03,184 INFO L225 Difference]: With dead ends: 235 [2021-10-06 21:20:03,185 INFO L226 Difference]: Without dead ends: 230 [2021-10-06 21:20:03,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 214.1ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:20:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-06 21:20:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 144. [2021-10-06 21:20:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.923076923076923) internal successors, (418), 143 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 21:20:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 418 transitions. [2021-10-06 21:20:03,211 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 418 transitions. Word has length 15 [2021-10-06 21:20:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:03,211 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 418 transitions. [2021-10-06 21:20:03,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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 21:20:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 418 transitions. [2021-10-06 21:20:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:20:03,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:03,214 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:03,227 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 21:20:03,414 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 21:20:03,415 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:03,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1849227736, now seen corresponding path program 6 times [2021-10-06 21:20:03,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:03,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957997715] [2021-10-06 21:20:03,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:20:03,416 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:03,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:03,420 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 21:20:03,423 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 21:20:03,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:20:03,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:03,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:20:03,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:03,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:04,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:04,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957997715] [2021-10-06 21:20:04,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957997715] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:04,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:04,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:20:04,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683438277] [2021-10-06 21:20:04,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:20:04,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:20:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:20:04,290 INFO L87 Difference]: Start difference. First operand 144 states and 418 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:05,000 INFO L93 Difference]: Finished difference Result 261 states and 748 transitions. [2021-10-06 21:20:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:20:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:20:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:05,004 INFO L225 Difference]: With dead ends: 261 [2021-10-06 21:20:05,004 INFO L226 Difference]: Without dead ends: 256 [2021-10-06 21:20:05,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 675.1ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:20:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-06 21:20:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 196. [2021-10-06 21:20:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.1487179487179486) internal successors, (614), 195 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 614 transitions. [2021-10-06 21:20:05,017 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 614 transitions. Word has length 15 [2021-10-06 21:20:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:05,017 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 614 transitions. [2021-10-06 21:20:05,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 614 transitions. [2021-10-06 21:20:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:05,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:05,021 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:05,038 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 21:20:05,238 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 21:20:05,238 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:05,239 INFO L82 PathProgramCache]: Analyzing trace with hash 270613751, now seen corresponding path program 7 times [2021-10-06 21:20:05,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:05,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851375379] [2021-10-06 21:20:05,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:20:05,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:05,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:05,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:05,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:20:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:05,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:20:05,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:20:05,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:20:05,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:05,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851375379] [2021-10-06 21:20:05,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851375379] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:05,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:05,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:20:05,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93814826] [2021-10-06 21:20:05,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:20:05,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:20:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:20:05,704 INFO L87 Difference]: Start difference. First operand 196 states and 614 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:05,765 INFO L93 Difference]: Finished difference Result 218 states and 626 transitions. [2021-10-06 21:20:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:20:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:20:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:05,768 INFO L225 Difference]: With dead ends: 218 [2021-10-06 21:20:05,768 INFO L226 Difference]: Without dead ends: 200 [2021-10-06 21:20:05,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:20:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-06 21:20:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 142. [2021-10-06 21:20:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.8085106382978724) internal successors, (396), 141 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 21:20:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 396 transitions. [2021-10-06 21:20:05,775 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 396 transitions. Word has length 16 [2021-10-06 21:20:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:05,776 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 396 transitions. [2021-10-06 21:20:05,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 396 transitions. [2021-10-06 21:20:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:05,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:05,777 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:05,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-06 21:20:05,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:05,996 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:05,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:05,996 INFO L82 PathProgramCache]: Analyzing trace with hash -442676812, now seen corresponding path program 8 times [2021-10-06 21:20:05,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:05,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451018834] [2021-10-06 21:20:05,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:20:05,997 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:05,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:05,998 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:06,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:20:06,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:20:06,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:06,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:20:06,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:20:06,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:20:06,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:06,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451018834] [2021-10-06 21:20:06,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451018834] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:06,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:06,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-10-06 21:20:06,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054926292] [2021-10-06 21:20:06,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:20:06,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:06,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:20:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:20:06,360 INFO L87 Difference]: Start difference. First operand 142 states and 396 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 21:20:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:06,409 INFO L93 Difference]: Finished difference Result 168 states and 444 transitions. [2021-10-06 21:20:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:20:06,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 21:20:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:06,411 INFO L225 Difference]: With dead ends: 168 [2021-10-06 21:20:06,411 INFO L226 Difference]: Without dead ends: 168 [2021-10-06 21:20:06,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:20:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-06 21:20:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2021-10-06 21:20:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.6222222222222222) internal successors, (354), 135 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 21:20:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 354 transitions. [2021-10-06 21:20:06,417 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 354 transitions. Word has length 16 [2021-10-06 21:20:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:06,417 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 354 transitions. [2021-10-06 21:20:06,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 21:20:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 354 transitions. [2021-10-06 21:20:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:20:06,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:06,419 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:06,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:06,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,632 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:06,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1037912040, now seen corresponding path program 9 times [2021-10-06 21:20:06,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:06,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465831847] [2021-10-06 21:20:06,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:20:06,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:06,639 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:06,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:20:06,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:20:06,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:06,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:20:06,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:20:07,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:07,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:07,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465831847] [2021-10-06 21:20:07,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465831847] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:07,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:07,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:20:07,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453406080] [2021-10-06 21:20:07,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:20:07,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:20:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:20:07,578 INFO L87 Difference]: Start difference. First operand 136 states and 354 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 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 21:20:08,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:08,094 INFO L93 Difference]: Finished difference Result 268 states and 664 transitions. [2021-10-06 21:20:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:20:08,095 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 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) Word has length 17 [2021-10-06 21:20:08,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:08,097 INFO L225 Difference]: With dead ends: 268 [2021-10-06 21:20:08,097 INFO L226 Difference]: Without dead ends: 216 [2021-10-06 21:20:08,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 575.4ms TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:20:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-06 21:20:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 128. [2021-10-06 21:20:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.5511811023622046) internal successors, (324), 127 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:20:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 324 transitions. [2021-10-06 21:20:08,104 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 324 transitions. Word has length 17 [2021-10-06 21:20:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:08,104 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 324 transitions. [2021-10-06 21:20:08,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 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 21:20:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 324 transitions. [2021-10-06 21:20:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:20:08,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:08,106 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:08,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:08,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:08,319 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:08,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:08,320 INFO L82 PathProgramCache]: Analyzing trace with hash -794805406, now seen corresponding path program 10 times [2021-10-06 21:20:08,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:08,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389582958] [2021-10-06 21:20:08,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:20:08,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:08,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:08,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:08,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:20:08,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:20:08,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:08,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:20:08,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:08,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:09,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:09,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389582958] [2021-10-06 21:20:09,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389582958] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:09,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:09,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:20:09,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265384340] [2021-10-06 21:20:09,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:20:09,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:20:09,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:20:09,257 INFO L87 Difference]: Start difference. First operand 128 states and 324 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:10,607 INFO L93 Difference]: Finished difference Result 526 states and 1340 transitions. [2021-10-06 21:20:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:20:10,608 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:20:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:10,612 INFO L225 Difference]: With dead ends: 526 [2021-10-06 21:20:10,613 INFO L226 Difference]: Without dead ends: 486 [2021-10-06 21:20:10,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1312.5ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:20:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-06 21:20:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 228. [2021-10-06 21:20:10,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.616740088105727) internal successors, (594), 227 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 21:20:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 594 transitions. [2021-10-06 21:20:10,627 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 594 transitions. Word has length 17 [2021-10-06 21:20:10,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:10,627 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 594 transitions. [2021-10-06 21:20:10,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 594 transitions. [2021-10-06 21:20:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:20:10,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:10,629 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:10,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:10,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:10,842 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:10,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2067829792, now seen corresponding path program 11 times [2021-10-06 21:20:10,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:10,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088652835] [2021-10-06 21:20:10,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:20:10,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:10,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:10,846 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:10,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:20:11,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:20:11,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:11,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:20:11,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:20:11,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:20:11,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:11,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088652835] [2021-10-06 21:20:11,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088652835] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:11,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:11,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 14 [2021-10-06 21:20:11,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812449637] [2021-10-06 21:20:11,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:20:11,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:20:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:20:11,894 INFO L87 Difference]: Start difference. First operand 228 states and 594 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:12,247 INFO L93 Difference]: Finished difference Result 266 states and 680 transitions. [2021-10-06 21:20:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:20:12,251 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:20:12,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:12,251 INFO L225 Difference]: With dead ends: 266 [2021-10-06 21:20:12,251 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:20:12,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 418.1ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:20:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:20:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:20:12,252 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 21:20:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:20:12,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-06 21:20:12,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:12,252 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:20:12,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:20:12,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:20:12,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:20:12,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:20:12,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:20:12,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:20:12,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:20:12,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:20:12,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:20:12,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:20:12,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:20:12,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:20:12,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:20:12,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:20:12,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:12,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:12,474 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:20:12,474 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:20:12,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:20:12 BasicIcfg [2021-10-06 21:20:12,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:20:12,478 INFO L168 Benchmark]: Toolchain (without parser) took 29266.03 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.1 MB in the beginning and 116.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 43.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:20:12,478 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:20:12,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.32 ms. Allocated memory is still 151.0 MB. Free memory was 129.9 MB in the beginning and 119.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:20:12,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 151.0 MB. Free memory was 119.1 MB in the beginning and 117.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:20:12,479 INFO L168 Benchmark]: Boogie Preprocessor took 100.68 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 133.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:20:12,480 INFO L168 Benchmark]: RCFGBuilder took 683.04 ms. Allocated memory is still 151.0 MB. Free memory was 133.6 MB in the beginning and 119.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:20:12,480 INFO L168 Benchmark]: TraceAbstraction took 28136.14 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.1 MB in the beginning and 116.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:20:12,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.32 ms. Allocated memory is still 151.0 MB. Free memory was 129.9 MB in the beginning and 119.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 151.0 MB. Free memory was 119.1 MB in the beginning and 117.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.68 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 133.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 683.04 ms. Allocated memory is still 151.0 MB. Free memory was 133.6 MB in the beginning and 119.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28136.14 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.1 MB in the beginning and 116.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9463.1ms, 94 PlacesBefore, 30 PlacesAfterwards, 98 TransitionsBefore, 25 TransitionsAfterwards, 1360 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 9 ChoiceCompositions, 106 TotalNumberOfCompositions, 1350 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1350, positive: 1350, positive conditional: 0, positive unconditional: 1350, 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: 867, positive: 867, positive conditional: 0, positive unconditional: 867, 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: 867, positive: 857, positive conditional: 0, positive unconditional: 857, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 394, positive: 394, positive conditional: 0, positive unconditional: 394, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1350, positive: 483, positive conditional: 0, positive unconditional: 483, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 867, unknown conditional: 0, unknown unconditional: 867] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, 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: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 92]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 92]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: 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 5 procedures, 116 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 27937.3ms, OverallIterations: 18, TraceHistogramMax: 4, EmptinessCheckTime: 34.1ms, AutomataDifference: 4581.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9538.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 333 SDtfs, 1215 SDslu, 956 SDs, 0 SdLazy, 574 SolverSat, 335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1070.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4408.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=17, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 174.8ms AutomataMinimizationTime, 18 MinimizatonAttempts, 778 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 145.8ms SsaConstructionTime, 648.2ms SatisfiabilityAnalysisTime, 7612.0ms InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 388 ConstructedInterpolants, 4 QuantifiedInterpolants, 2940 SizeOfPredicates, 72 NumberOfNonLiveVariables, 1051 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 36 InterpolantComputations, 14 PerfectInterpolantSequences, 31/190 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 21:20:12,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...