/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20/threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:34:05,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:34:05,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:34:05,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:34:05,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:34:05,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:34:05,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:34:05,398 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 21:34:05,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:34:05,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:34:05,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:34:05,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:34:05,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:34:05,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:34:05,452 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:34:05,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:34:05,453 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:34:05,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:34:05,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:34:05,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:34:05,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:34:05,455 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:34:05,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:34:05,456 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:34:05,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:34:05,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:34:05,456 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:34:05,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:34:05,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:34:05,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:34:05,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:34:05,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:34:05,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:34:05,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:34:05,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:34:05,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:34:05,458 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:34:05,459 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:34:05,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:34:05,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:34:05,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:34:05,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:34:05,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:34:05,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:34:05,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:34:05,918 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:34:05,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/threaded-sum-3.wvr.c [2021-10-06 21:34:05,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d42f617c/b8983561ec68447980340cf4069ff22c/FLAG2c6349be6 [2021-10-06 21:34:06,715 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:34:06,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/threaded-sum-3.wvr.c [2021-10-06 21:34:06,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d42f617c/b8983561ec68447980340cf4069ff22c/FLAG2c6349be6 [2021-10-06 21:34:07,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d42f617c/b8983561ec68447980340cf4069ff22c [2021-10-06 21:34:07,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:34:07,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:34:07,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:34:07,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:34:07,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:34:07,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c71d7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07, skipping insertion in model container [2021-10-06 21:34:07,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:34:07,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:34:07,388 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/threaded-sum-3.wvr.c[2390,2403] [2021-10-06 21:34:07,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:34:07,407 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:34:07,434 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/threaded-sum-3.wvr.c[2390,2403] [2021-10-06 21:34:07,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:34:07,455 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:34:07,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07 WrapperNode [2021-10-06 21:34:07,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:34:07,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:34:07,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:34:07,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:34:07,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:34:07,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:34:07,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:34:07,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:34:07,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:34:07,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:34:07,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:34:07,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:34:07,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (1/1) ... [2021-10-06 21:34:07,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:34:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:34:07,602 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 21:34:07,607 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 21:34:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:34:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:34:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:34:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:34:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:34:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:34:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:34:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:34:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:34:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:34:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:34:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:34:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:34:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:34:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:34:07,678 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 21:34:08,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:34:08,488 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-06 21:34:08,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:34:08 BoogieIcfgContainer [2021-10-06 21:34:08,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:34:08,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:34:08,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:34:08,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:34:08,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:34:07" (1/3) ... [2021-10-06 21:34:08,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d5ea19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:34:08, skipping insertion in model container [2021-10-06 21:34:08,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:34:07" (2/3) ... [2021-10-06 21:34:08,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d5ea19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:34:08, skipping insertion in model container [2021-10-06 21:34:08,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:34:08" (3/3) ... [2021-10-06 21:34:08,515 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.c [2021-10-06 21:34:08,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:34:08,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 21:34:08,531 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:34:08,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,592 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,592 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,593 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,593 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,593 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,593 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,593 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,594 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,594 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,594 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,595 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,595 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,602 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,602 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,605 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,605 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,606 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,606 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:34:08,614 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:34:08,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:34:08,676 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 21:34:08,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 21:34:08,694 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:34:08,708 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 111 transitions, 246 flow [2021-10-06 21:34:08,712 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 111 transitions, 246 flow [2021-10-06 21:34:08,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 111 transitions, 246 flow [2021-10-06 21:34:08,768 INFO L129 PetriNetUnfolder]: 8/108 cut-off events. [2021-10-06 21:34:08,769 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:34:08,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 8/108 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-06 21:34:08,777 INFO L116 LiptonReduction]: Number of co-enabled transitions 740 [2021-10-06 21:34:21,866 INFO L131 LiptonReduction]: Checked pairs total: 2034 [2021-10-06 21:34:21,866 INFO L133 LiptonReduction]: Total number of compositions: 108 [2021-10-06 21:34:21,878 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 39 transitions, 102 flow [2021-10-06 21:34:21,905 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 21:34:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 21:34:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:34:21,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:21,915 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:34:21,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:21,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:21,922 INFO L82 PathProgramCache]: Analyzing trace with hash 455, now seen corresponding path program 1 times [2021-10-06 21:34:21,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:21,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339800524] [2021-10-06 21:34:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:21,934 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:21,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:21,935 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 21:34:21,937 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 21:34:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:21,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:34:21,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:21,994 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 21:34:21,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:21,995 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 21:34:21,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:21,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339800524] [2021-10-06 21:34:21,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339800524] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:21,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:21,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:34:21,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550078359] [2021-10-06 21:34:22,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:34:22,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:34:22,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:34:22,024 INFO L87 Difference]: Start difference. First operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 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 21:34:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:22,055 INFO L93 Difference]: Finished difference Result 208 states and 673 transitions. [2021-10-06 21:34:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:34:22,058 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 21:34:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:22,081 INFO L225 Difference]: With dead ends: 208 [2021-10-06 21:34:22,081 INFO L226 Difference]: Without dead ends: 208 [2021-10-06 21:34:22,082 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 21:34:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-06 21:34:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-10-06 21:34:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 197 states have (on average 3.416243654822335) internal successors, (673), 207 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 21:34:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 673 transitions. [2021-10-06 21:34:22,162 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 673 transitions. Word has length 1 [2021-10-06 21:34:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:22,163 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 673 transitions. [2021-10-06 21:34:22,163 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 21:34:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 673 transitions. [2021-10-06 21:34:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:34:22,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:22,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:34:22,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:34:22,376 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 21:34:22,377 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:22,379 INFO L82 PathProgramCache]: Analyzing trace with hash 448326, now seen corresponding path program 1 times [2021-10-06 21:34:22,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:22,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820652783] [2021-10-06 21:34:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:22,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:22,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:22,382 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 21:34:22,385 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 21:34:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:22,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:34:22,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:22,625 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:34:22,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:34:22,670 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 21:34:22,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:22,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:22,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820652783] [2021-10-06 21:34:22,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820652783] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:22,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:22,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:34:22,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314165370] [2021-10-06 21:34:22,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:34:22,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:34:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:22,685 INFO L87 Difference]: Start difference. First operand 208 states and 673 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 21:34:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:22,737 INFO L93 Difference]: Finished difference Result 196 states and 640 transitions. [2021-10-06 21:34:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:22,738 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 21:34:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:22,741 INFO L225 Difference]: With dead ends: 196 [2021-10-06 21:34:22,741 INFO L226 Difference]: Without dead ends: 196 [2021-10-06 21:34:22,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-06 21:34:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-06 21:34:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 187 states have (on average 3.4224598930481283) internal successors, (640), 195 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 21:34:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 640 transitions. [2021-10-06 21:34:22,762 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 640 transitions. Word has length 3 [2021-10-06 21:34:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:22,763 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 640 transitions. [2021-10-06 21:34:22,763 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 21:34:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 640 transitions. [2021-10-06 21:34:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:34:22,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:22,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:34:22,777 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 21:34:22,978 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 21:34:22,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash 448328, now seen corresponding path program 1 times [2021-10-06 21:34:22,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:22,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910091780] [2021-10-06 21:34:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:22,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:22,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:22,983 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 21:34:22,986 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 21:34:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:23,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:34:23,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:23,220 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:34:23,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:34:23,345 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 21:34:23,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:23,403 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 21:34:23,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:23,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910091780] [2021-10-06 21:34:23,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910091780] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:23,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:23,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:34:23,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513835157] [2021-10-06 21:34:23,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:34:23,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:34:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:34:23,407 INFO L87 Difference]: Start difference. First operand 196 states and 640 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 21:34:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:23,473 INFO L93 Difference]: Finished difference Result 184 states and 607 transitions. [2021-10-06 21:34:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:23,474 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 21:34:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:23,477 INFO L225 Difference]: With dead ends: 184 [2021-10-06 21:34:23,477 INFO L226 Difference]: Without dead ends: 184 [2021-10-06 21:34:23,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:34:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-06 21:34:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-10-06 21:34:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 3.4293785310734464) internal successors, (607), 183 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 21:34:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 607 transitions. [2021-10-06 21:34:23,494 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 607 transitions. Word has length 3 [2021-10-06 21:34:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:23,495 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 607 transitions. [2021-10-06 21:34:23,495 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 21:34:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 607 transitions. [2021-10-06 21:34:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:34:23,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:23,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:34:23,514 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 21:34:23,709 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 21:34:23,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:23,710 INFO L82 PathProgramCache]: Analyzing trace with hash 430852289, now seen corresponding path program 1 times [2021-10-06 21:34:23,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:23,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627128245] [2021-10-06 21:34:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:23,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:23,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:23,713 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 21:34:23,743 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 21:34:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:23,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:34:23,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:23,914 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:34:23,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:34:24,011 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 21:34:24,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:24,102 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 21:34:24,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:24,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627128245] [2021-10-06 21:34:24,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627128245] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:24,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:24,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:34:24,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789994476] [2021-10-06 21:34:24,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:34:24,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:34:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:34:24,106 INFO L87 Difference]: Start difference. First operand 184 states and 607 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 21:34:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:24,139 INFO L93 Difference]: Finished difference Result 172 states and 574 transitions. [2021-10-06 21:34:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:24,140 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 21:34:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:24,142 INFO L225 Difference]: With dead ends: 172 [2021-10-06 21:34:24,143 INFO L226 Difference]: Without dead ends: 172 [2021-10-06 21:34:24,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:34:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-06 21:34:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-06 21:34:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 3.437125748502994) internal successors, (574), 171 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 21:34:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 574 transitions. [2021-10-06 21:34:24,156 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 574 transitions. Word has length 5 [2021-10-06 21:34:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:24,156 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 574 transitions. [2021-10-06 21:34:24,156 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 21:34:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 574 transitions. [2021-10-06 21:34:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:34:24,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:24,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:34:24,172 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 21:34:24,369 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 21:34:24,370 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:24,371 INFO L82 PathProgramCache]: Analyzing trace with hash 430852290, now seen corresponding path program 1 times [2021-10-06 21:34:24,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:24,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478041107] [2021-10-06 21:34:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:24,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:24,374 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 21:34:24,377 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 21:34:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:24,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:34:24,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:24,454 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:34:24,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:34:24,499 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 21:34:24,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:24,517 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 21:34:24,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:24,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478041107] [2021-10-06 21:34:24,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478041107] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:24,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:24,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:34:24,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286940399] [2021-10-06 21:34:24,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:34:24,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:24,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:34:24,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:24,522 INFO L87 Difference]: Start difference. First operand 172 states and 574 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 21:34:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:24,553 INFO L93 Difference]: Finished difference Result 160 states and 541 transitions. [2021-10-06 21:34:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:24,554 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 21:34:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:24,556 INFO L225 Difference]: With dead ends: 160 [2021-10-06 21:34:24,556 INFO L226 Difference]: Without dead ends: 160 [2021-10-06 21:34:24,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:24,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-06 21:34:24,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-06 21:34:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 3.445859872611465) internal successors, (541), 159 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 21:34:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 541 transitions. [2021-10-06 21:34:24,572 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 541 transitions. Word has length 5 [2021-10-06 21:34:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:24,572 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 541 transitions. [2021-10-06 21:34:24,572 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 21:34:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 541 transitions. [2021-10-06 21:34:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:34:24,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:24,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:24,588 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 21:34:24,789 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 21:34:24,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:24,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1732198508, now seen corresponding path program 1 times [2021-10-06 21:34:24,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:24,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070652800] [2021-10-06 21:34:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:24,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:24,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:24,793 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 21:34:24,794 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 21:34:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:24,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:34:24,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:24,899 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:34:24,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:34:24,976 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 21:34:24,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:25,028 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 21:34:25,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:25,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070652800] [2021-10-06 21:34:25,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070652800] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:25,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:25,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:34:25,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639390284] [2021-10-06 21:34:25,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:34:25,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:25,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:34:25,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:34:25,031 INFO L87 Difference]: Start difference. First operand 160 states and 541 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:25,064 INFO L93 Difference]: Finished difference Result 133 states and 433 transitions. [2021-10-06 21:34:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:25,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:34:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:25,067 INFO L225 Difference]: With dead ends: 133 [2021-10-06 21:34:25,067 INFO L226 Difference]: Without dead ends: 133 [2021-10-06 21:34:25,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:34:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-06 21:34:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-06 21:34:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 3.3053435114503817) internal successors, (433), 132 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 21:34:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 433 transitions. [2021-10-06 21:34:25,075 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 433 transitions. Word has length 7 [2021-10-06 21:34:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:25,075 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 433 transitions. [2021-10-06 21:34:25,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 433 transitions. [2021-10-06 21:34:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:34:25,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:25,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:25,090 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 21:34:25,282 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 21:34:25,283 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:25,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1732198509, now seen corresponding path program 1 times [2021-10-06 21:34:25,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:25,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288157516] [2021-10-06 21:34:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:25,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:25,287 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 21:34:25,291 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 21:34:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:25,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:34:25,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:25,524 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:34:25,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 58 [2021-10-06 21:34:25,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2021-10-06 21:34:25,727 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 21:34:25,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:25,831 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 21:34:25,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:25,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288157516] [2021-10-06 21:34:25,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288157516] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:25,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:25,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:34:25,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721233428] [2021-10-06 21:34:25,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:34:25,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:25,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:34:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:34:25,834 INFO L87 Difference]: Start difference. First operand 133 states and 433 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:25,857 INFO L93 Difference]: Finished difference Result 106 states and 325 transitions. [2021-10-06 21:34:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:25,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:34:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:25,860 INFO L225 Difference]: With dead ends: 106 [2021-10-06 21:34:25,860 INFO L226 Difference]: Without dead ends: 106 [2021-10-06 21:34:25,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:34:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-06 21:34:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-06 21:34:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 3.0952380952380953) internal successors, (325), 105 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 21:34:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 325 transitions. [2021-10-06 21:34:25,866 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 325 transitions. Word has length 7 [2021-10-06 21:34:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:25,866 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 325 transitions. [2021-10-06 21:34:25,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 325 transitions. [2021-10-06 21:34:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:34:25,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:25,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:25,884 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 21:34:26,080 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 21:34:26,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1185098761, now seen corresponding path program 1 times [2021-10-06 21:34:26,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:26,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124133645] [2021-10-06 21:34:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:26,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:26,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:26,085 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 21:34:26,086 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 21:34:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:26,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:34:26,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:26,214 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 21:34:26,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:26,248 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 21:34:26,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:26,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124133645] [2021-10-06 21:34:26,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124133645] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:26,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:26,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-06 21:34:26,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403695147] [2021-10-06 21:34:26,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:34:26,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:34:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:26,251 INFO L87 Difference]: Start difference. First operand 106 states and 325 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 21:34:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:26,277 INFO L93 Difference]: Finished difference Result 102 states and 305 transitions. [2021-10-06 21:34:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 21:34:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:26,280 INFO L225 Difference]: With dead ends: 102 [2021-10-06 21:34:26,280 INFO L226 Difference]: Without dead ends: 102 [2021-10-06 21:34:26,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-06 21:34:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-06 21:34:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 3.01980198019802) internal successors, (305), 101 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 21:34:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 305 transitions. [2021-10-06 21:34:26,286 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 305 transitions. Word has length 16 [2021-10-06 21:34:26,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:26,308 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 305 transitions. [2021-10-06 21:34:26,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 21:34:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 305 transitions. [2021-10-06 21:34:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:34:26,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:26,313 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:26,327 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 21:34:26,514 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 21:34:26,515 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:26,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:26,516 INFO L82 PathProgramCache]: Analyzing trace with hash 869849687, now seen corresponding path program 1 times [2021-10-06 21:34:26,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:26,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851312024] [2021-10-06 21:34:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:26,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:26,518 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 21:34:26,520 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 21:34:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:26,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:34:26,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:26,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:26,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:26,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851312024] [2021-10-06 21:34:26,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851312024] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:26,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:26,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-06 21:34:26,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632131107] [2021-10-06 21:34:26,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:34:26,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:26,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:34:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:26,722 INFO L87 Difference]: Start difference. First operand 102 states and 305 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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 21:34:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:26,746 INFO L93 Difference]: Finished difference Result 158 states and 487 transitions. [2021-10-06 21:34:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:34:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:34:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:26,748 INFO L225 Difference]: With dead ends: 158 [2021-10-06 21:34:26,748 INFO L226 Difference]: Without dead ends: 158 [2021-10-06 21:34:26,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:34:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-06 21:34:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2021-10-06 21:34:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 3.0697674418604652) internal successors, (396), 129 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 21:34:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 396 transitions. [2021-10-06 21:34:26,756 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 396 transitions. Word has length 18 [2021-10-06 21:34:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:26,756 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 396 transitions. [2021-10-06 21:34:26,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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 21:34:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 396 transitions. [2021-10-06 21:34:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:34:26,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:26,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:26,773 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 21:34:26,972 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 21:34:26,973 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:34:26,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:26,974 INFO L82 PathProgramCache]: Analyzing trace with hash 468767047, now seen corresponding path program 1 times [2021-10-06 21:34:26,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:26,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251782155] [2021-10-06 21:34:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:34:26,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:26,977 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 21:34:26,980 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 21:34:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:34:27,106 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 21:34:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:34:27,231 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-06 21:34:27,231 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 21:34:27,232 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:34:27,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:34:27,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:34:27,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:34:27,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:34:27,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:34:27,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:34:27,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:34:27,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:34:27,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:34:27,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:34:27,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:34:27,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:34:27,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:34:27,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:34:27,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:34:27,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:34:27,255 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 21:34:27,451 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 21:34:27,459 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:34:27,459 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:34:27,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:34:27 BasicIcfg [2021-10-06 21:34:27,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:34:27,511 INFO L168 Benchmark]: Toolchain (without parser) took 20434.24 ms. Allocated memory was 170.9 MB in the beginning and 220.2 MB in the end (delta: 49.3 MB). Free memory was 145.3 MB in the beginning and 164.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:34:27,511 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 170.9 MB. Free memory is still 145.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:34:27,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.53 ms. Allocated memory is still 170.9 MB. Free memory was 144.9 MB in the beginning and 134.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:34:27,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.07 ms. Allocated memory is still 170.9 MB. Free memory was 134.0 MB in the beginning and 132.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:34:27,513 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 170.9 MB. Free memory was 132.3 MB in the beginning and 130.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:34:27,513 INFO L168 Benchmark]: RCFGBuilder took 932.47 ms. Allocated memory is still 170.9 MB. Free memory was 130.8 MB in the beginning and 145.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:34:27,514 INFO L168 Benchmark]: TraceAbstraction took 19011.92 ms. Allocated memory was 170.9 MB in the beginning and 220.2 MB in the end (delta: 49.3 MB). Free memory was 145.1 MB in the beginning and 164.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-10-06 21:34:27,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 170.9 MB. Free memory is still 145.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 370.53 ms. Allocated memory is still 170.9 MB. Free memory was 144.9 MB in the beginning and 134.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.07 ms. Allocated memory is still 170.9 MB. Free memory was 134.0 MB in the beginning and 132.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 170.9 MB. Free memory was 132.3 MB in the beginning and 130.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 932.47 ms. Allocated memory is still 170.9 MB. Free memory was 130.8 MB in the beginning and 145.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19011.92 ms. Allocated memory was 170.9 MB in the beginning and 220.2 MB in the end (delta: 49.3 MB). Free memory was 145.1 MB in the beginning and 164.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13154.6ms, 113 PlacesBefore, 46 PlacesAfterwards, 111 TransitionsBefore, 39 TransitionsAfterwards, 740 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 108 TotalNumberOfCompositions, 2034 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1657, positive: 1595, positive conditional: 0, positive unconditional: 1595, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 501, positive: 491, positive conditional: 0, positive unconditional: 491, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 501, positive: 483, positive conditional: 0, positive unconditional: 483, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 164, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 115, negative conditional: 0, negative unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1657, positive: 1104, positive conditional: 0, positive unconditional: 1104, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 501, unknown conditional: 0, unknown unconditional: 501] , Statistics on independence cache: Total cache size (in pairs): 140, Positive cache size: 133, Positive conditional cache size: 0, Positive unconditional cache size: 133, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - 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 - UnprovableResult [Line: 94]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 94. Possible FailurePath: [L38] 0 int s, t, m, c, T, S, u, U; [L74] 0 pthread_t t1, t2, t3; [L76] 0 S = __VERIFIER_nondet_int() [L77] 0 T = __VERIFIER_nondet_int() [L78] 0 U = __VERIFIER_nondet_int() [L79] 0 s = S [L80] 0 t = T [L81] 0 u = U [L35] COND FALSE 0 !(!cond) [L86] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [c=0, m=0, S=1, s=1, T=2147483647, t=2147483647, u=1, U=1] [L41] COND TRUE 1 s > 0 || t > 0 || u > 0 VAL [c=0, m=0, s=1, S=1, T=2147483647, t=2147483647, u=1, U=1] [L87] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [c=0, m=0, S=1, s=1, T=2147483647, t=2147483647, U=1, u=1] [L43] COND TRUE 1 s > 0 [L44] 1 s-- [L45] 1 m++ VAL [c=0, m=1, m++=10, S=1, s=0, s--=9, T=2147483647, t=2147483647, u=1, U=1] [L88] FCALL, FORK 0 pthread_create(&t3, NULL, thread3, NULL) VAL [c=0, m=1, m++=10, s=0, S=1, s--=9, T=2147483647, t=2147483647, u=1, U=1] [L63] COND TRUE 3 u > 0 [L65] 3 t++ VAL [c=0, m=1, m++=10, s=0, S=1, s--=9, t=-2147483648, T=2147483647, u=1, U=1] [L68] 3 u-- VAL [c=0, m=1, m++=10, S=1, s=0, s--=9, t=-2147483648, T=2147483647, U=1, u=0] [L52] COND FALSE 2 !(t > 0 || u > 0) [L41] COND FALSE 1 !(s > 0 || t > 0 || u > 0) [L63] COND FALSE 3 !(u > 0) [L89] 0 \read(t1) VAL [c=0, m=1, m++=10, S=1, s=0, s--=9, t=-2147483648, T=2147483647, u=0, U=1] [L89] FCALL, JOIN 1 pthread_join(t1, 0) VAL [c=0, m=1, m++=10, S=1, s=0, s--=9, t=-2147483648, T=2147483647, U=1, u=0] [L90] 0 \read(t2) VAL [c=0, m=1, m++=10, s=0, S=1, s--=9, t=-2147483648, T=2147483647, u=0, U=1] [L90] FCALL, JOIN 2 pthread_join(t2, 0) VAL [c=0, m=1, m++=10, S=1, s=0, s--=9, t=-2147483648, T=2147483647, u=0, U=1] [L91] 0 \read(t3) VAL [c=0, m=1, m++=10, S=1, s=0, s--=9, T=2147483647, t=-2147483648, U=1, u=0] [L91] FCALL, JOIN 3 pthread_join(t3, 0) VAL [c=0, m=1, m++=10, S=1, s=0, s--=9, T=2147483647, t=-2147483648, U=1, u=0] [L35] COND FALSE 0 !(!cond) [L94] 0 reach_error() VAL [c=0, m=1, m++=10, s=0, S=1, s--=9, t=-2147483648, T=2147483647, u=0, U=1] - UnprovableResult [Line: 86]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 89]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 89]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 120 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 18791.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 21.7ms, AutomataDifference: 404.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13228.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 183 SDtfs, 194 SDslu, 25 SDs, 0 SdLazy, 60 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 179.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 182.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 152.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 28 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 97.5ms SsaConstructionTime, 348.9ms SatisfiabilityAnalysisTime, 1842.7ms InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 6 QuantifiedInterpolants, 676 SizeOfPredicates, 32 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-06 21:34:27,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...