/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-prod-cons3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 21:28:59,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 21:28:59,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 21:28:59,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 21:28:59,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 21:28:59,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 21:28:59,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 21:28:59,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 21:28:59,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 21:28:59,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 21:28:59,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 21:28:59,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 21:28:59,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 21:28:59,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 21:28:59,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 21:28:59,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 21:28:59,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 21:28:59,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 21:28:59,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 21:28:59,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 21:28:59,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 21:28:59,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 21:28:59,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 21:28:59,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 21:28:59,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 21:28:59,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 21:28:59,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 21:28:59,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 21:28:59,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 21:28:59,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 21:28:59,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 21:28:59,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 21:28:59,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 21:28:59,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 21:28:59,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 21:28:59,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 21:28:59,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 21:28:59,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 21:28:59,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 21:28:59,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 21:28:59,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 21:28:59,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 21:28:59,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 21:28:59,447 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 21:28:59,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 21:28:59,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 21:28:59,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 21:28:59,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 21:28:59,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 21:28:59,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 21:28:59,449 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 21:28:59,449 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 21:28:59,449 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 21:28:59,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 21:28:59,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 21:28:59,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 21:28:59,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 21:28:59,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 21:28:59,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 21:28:59,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 21:28:59,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 21:28:59,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 21:28:59,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:28:59,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 21:28:59,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 21:28:59,452 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 21:28:59,452 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 21:28:59,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 21:28:59,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 21:28:59,453 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 21:28:59,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 21:28:59,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 21:28:59,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 21:28:59,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 21:28:59,873 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 21:28:59,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2021-10-13 21:28:59,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e4e28de/65e14e029b734e26abf489b524e6e147/FLAGef83c1a49 [2021-10-13 21:29:00,578 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 21:29:00,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2021-10-13 21:29:00,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e4e28de/65e14e029b734e26abf489b524e6e147/FLAGef83c1a49 [2021-10-13 21:29:00,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e4e28de/65e14e029b734e26abf489b524e6e147 [2021-10-13 21:29:00,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 21:29:00,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 21:29:00,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 21:29:00,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 21:29:00,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 21:29:00,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:29:00" (1/1) ... [2021-10-13 21:29:00,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24bff804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:00, skipping insertion in model container [2021-10-13 21:29:00,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:29:00" (1/1) ... [2021-10-13 21:29:00,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 21:29:00,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:29:01,199 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-prod-cons3.wvr.c[3432,3445] [2021-10-13 21:29:01,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:29:01,225 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 21:29:01,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:29:01,261 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-prod-cons3.wvr.c[3432,3445] [2021-10-13 21:29:01,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:29:01,280 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 21:29:01,322 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-prod-cons3.wvr.c[3432,3445] [2021-10-13 21:29:01,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:29:01,347 INFO L208 MainTranslator]: Completed translation [2021-10-13 21:29:01,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01 WrapperNode [2021-10-13 21:29:01,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 21:29:01,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 21:29:01,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 21:29:01,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 21:29:01,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 21:29:01,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 21:29:01,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 21:29:01,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 21:29:01,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 21:29:01,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 21:29:01,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 21:29:01,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 21:29:01,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (1/1) ... [2021-10-13 21:29:01,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:29:01,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:29:01,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 21:29:01,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 21:29:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 21:29:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 21:29:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 21:29:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 21:29:01,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 21:29:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 21:29:01,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 21:29:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 21:29:01,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 21:29:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 21:29:01,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 21:29:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 21:29:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 21:29:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 21:29:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 21:29:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 21:29:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 21:29:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 21:29:01,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 21:29:03,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 21:29:03,189 INFO L299 CfgBuilder]: Removed 39 assume(true) statements. [2021-10-13 21:29:03,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:29:03 BoogieIcfgContainer [2021-10-13 21:29:03,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 21:29:03,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 21:29:03,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 21:29:03,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 21:29:03,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:29:00" (1/3) ... [2021-10-13 21:29:03,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186cc83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:29:03, skipping insertion in model container [2021-10-13 21:29:03,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:01" (2/3) ... [2021-10-13 21:29:03,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186cc83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:29:03, skipping insertion in model container [2021-10-13 21:29:03,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:29:03" (3/3) ... [2021-10-13 21:29:03,202 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2021-10-13 21:29:03,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 21:29:03,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-13 21:29:03,210 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 21:29:03,251 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,252 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,252 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,252 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,252 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,253 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,254 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,254 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,254 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,254 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,255 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,255 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,255 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,255 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,255 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,256 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,257 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,258 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,258 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,259 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,259 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,261 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,261 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,262 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,263 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,263 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,263 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,264 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,268 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,268 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,268 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,268 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,268 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,269 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,271 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,272 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,272 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,272 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,272 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,273 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,273 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,273 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,274 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,274 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,275 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,275 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,275 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,275 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,276 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,279 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,279 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,280 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,280 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,282 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,282 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,282 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,282 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,288 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,288 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,290 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,290 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,293 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,293 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,293 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,293 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,294 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,294 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,294 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,294 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,296 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,296 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,296 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,297 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_~temp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:29:03,305 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 21:29:03,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 21:29:03,368 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 21:29:03,368 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-10-13 21:29:03,391 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 21:29:03,405 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 237 transitions, 506 flow [2021-10-13 21:29:03,409 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 237 transitions, 506 flow [2021-10-13 21:29:03,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 232 places, 237 transitions, 506 flow [2021-10-13 21:29:03,559 INFO L129 PetriNetUnfolder]: 18/233 cut-off events. [2021-10-13 21:29:03,560 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 21:29:03,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 233 events. 18/233 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2021-10-13 21:29:03,576 INFO L116 LiptonReduction]: Number of co-enabled transitions 3194 [2021-10-13 21:29:43,965 WARN L207 SmtUtils]: Spent 6.45 s on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2021-10-13 21:29:45,646 INFO L131 LiptonReduction]: Checked pairs total: 9998 [2021-10-13 21:29:45,646 INFO L133 LiptonReduction]: Total number of compositions: 249 [2021-10-13 21:29:45,669 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 172 flow [2021-10-13 21:29:45,959 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5357 states, 5051 states have (on average 4.26192833102356) internal successors, (21527), 5356 states have internal predecessors, (21527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 5357 states, 5051 states have (on average 4.26192833102356) internal successors, (21527), 5356 states have internal predecessors, (21527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:29:45,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:29:45,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:29:45,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:29:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:29:46,006 INFO L82 PathProgramCache]: Analyzing trace with hash 32334, now seen corresponding path program 1 times [2021-10-13 21:29:46,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:29:46,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432778261] [2021-10-13 21:29:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:29:46,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:29:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:29:46,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:29:46,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 21:29:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:29:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:29:46,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:29:46,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:29:46,819 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:29:46,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 21:29:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:29:46,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:29:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:29:47,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:29:47,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432778261] [2021-10-13 21:29:47,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432778261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:29:47,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:29:47,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:29:47,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720509766] [2021-10-13 21:29:47,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:29:47,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:29:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:29:47,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:29:47,185 INFO L87 Difference]: Start difference. First operand has 5357 states, 5051 states have (on average 4.26192833102356) internal successors, (21527), 5356 states have internal predecessors, (21527), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:48,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:29:48,268 INFO L93 Difference]: Finished difference Result 10713 states and 43057 transitions. [2021-10-13 21:29:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:29:48,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 2 [2021-10-13 21:29:48,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:29:48,508 INFO L225 Difference]: With dead ends: 10713 [2021-10-13 21:29:48,509 INFO L226 Difference]: Without dead ends: 10713 [2021-10-13 21:29:48,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:29:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10713 states. [2021-10-13 21:29:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10713 to 5360. [2021-10-13 21:29:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 5055 states have (on average 4.261523244312562) internal successors, (21542), 5359 states have internal predecessors, (21542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 21542 transitions. [2021-10-13 21:29:49,045 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 21542 transitions. Word has length 2 [2021-10-13 21:29:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:29:49,046 INFO L470 AbstractCegarLoop]: Abstraction has 5360 states and 21542 transitions. [2021-10-13 21:29:49,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 21542 transitions. [2021-10-13 21:29:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:29:49,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:29:49,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:29:49,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 21:29:49,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:29:49,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:29:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:29:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash 32336, now seen corresponding path program 1 times [2021-10-13 21:29:49,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:29:49,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345573059] [2021-10-13 21:29:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:29:49,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:29:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:29:49,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:29:49,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 21:29:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:29:49,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:29:49,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:29:49,844 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:29:49,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 21:29:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:29:50,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:29:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:29:50,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:29:50,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345573059] [2021-10-13 21:29:50,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345573059] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:29:50,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:29:50,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:29:50,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11436083] [2021-10-13 21:29:50,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:29:50,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:29:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:29:50,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:29:50,827 INFO L87 Difference]: Start difference. First operand 5360 states and 21542 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:51,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:29:51,189 INFO L93 Difference]: Finished difference Result 5358 states and 21536 transitions. [2021-10-13 21:29:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:29:51,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-10-13 21:29:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:29:51,249 INFO L225 Difference]: With dead ends: 5358 [2021-10-13 21:29:51,249 INFO L226 Difference]: Without dead ends: 5358 [2021-10-13 21:29:51,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:29:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2021-10-13 21:29:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 5358. [2021-10-13 21:29:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5055 states have (on average 4.260336300692384) internal successors, (21536), 5357 states have internal predecessors, (21536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 21536 transitions. [2021-10-13 21:29:51,602 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 21536 transitions. Word has length 2 [2021-10-13 21:29:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:29:51,603 INFO L470 AbstractCegarLoop]: Abstraction has 5358 states and 21536 transitions. [2021-10-13 21:29:51,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:29:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 21536 transitions. [2021-10-13 21:29:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:29:51,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:29:51,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:29:51,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 21:29:51,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:29:51,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:29:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:29:51,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1008832, now seen corresponding path program 1 times [2021-10-13 21:29:51,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:29:51,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852281550] [2021-10-13 21:29:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:29:51,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:29:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:29:51,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:29:51,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 21:29:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:29:51,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:29:51,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:29:52,478 INFO L354 Elim1Store]: treesize reduction 526, result has 12.2 percent of original size [2021-10-13 21:29:52,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 13 case distinctions, treesize of input 264 treesize of output 308 [2021-10-13 21:30:01,462 INFO L354 Elim1Store]: treesize reduction 242, result has 35.8 percent of original size [2021-10-13 21:30:01,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 147 treesize of output 264 [2021-10-13 21:30:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:30:23,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:30:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:30:23,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:30:23,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852281550] [2021-10-13 21:30:23,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852281550] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:30:23,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:30:23,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-13 21:30:23,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078951681] [2021-10-13 21:30:23,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 21:30:23,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:30:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 21:30:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-13 21:30:23,200 INFO L87 Difference]: Start difference. First operand 5358 states and 21536 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:30:35,646 WARN L207 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 142 DAG size of output: 137 [2021-10-13 21:32:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:32:30,516 INFO L93 Difference]: Finished difference Result 8364 states and 33627 transitions. [2021-10-13 21:32:30,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:32:30,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 21:32:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:32:30,611 INFO L225 Difference]: With dead ends: 8364 [2021-10-13 21:32:30,611 INFO L226 Difference]: Without dead ends: 8364 [2021-10-13 21:32:30,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16253.0ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-13 21:32:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2021-10-13 21:32:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 4601. [2021-10-13 21:32:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 4344 states have (on average 4.1738029465930016) internal successors, (18131), 4600 states have internal predecessors, (18131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:32:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 18131 transitions. [2021-10-13 21:32:30,942 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 18131 transitions. Word has length 3 [2021-10-13 21:32:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:32:30,943 INFO L470 AbstractCegarLoop]: Abstraction has 4601 states and 18131 transitions. [2021-10-13 21:32:30,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:32:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 18131 transitions. [2021-10-13 21:32:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 21:32:30,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:32:30,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 21:32:30,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 21:32:31,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:32:31,159 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:32:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:32:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1008831, now seen corresponding path program 1 times [2021-10-13 21:32:31,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:32:31,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755193111] [2021-10-13 21:32:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:32:31,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:32:31,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:32:31,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:32:31,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 21:32:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:32:31,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:32:31,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:32:32,176 INFO L354 Elim1Store]: treesize reduction 367, result has 14.1 percent of original size [2021-10-13 21:32:32,176 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 6 case distinctions, treesize of input 99 treesize of output 139 [2021-10-13 21:32:32,201 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-13 21:32:32,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 613 treesize of output 577 [2021-10-13 21:32:39,276 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-13 21:32:39,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 135 [2021-10-13 21:33:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:33:04,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:33:06,281 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_133 (_ BitVec 32))) (or (and (forall ((v_ULTIMATE.start_create_fresh_int_array_~size_143 (_ BitVec 32))) (bvule (bvadd |c_ULTIMATE.start_main_~#t1~0.offset| (_ bv4 32)) (select (store |c_#length| v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_133 (bvmul v_ULTIMATE.start_create_fresh_int_array_~size_143 (_ bv4 32))) |c_ULTIMATE.start_main_~#t1~0.base|))) (bvule |c_ULTIMATE.start_main_~#t1~0.offset| (bvadd |c_ULTIMATE.start_main_~#t1~0.offset| (_ bv4 32)))) (not (bvult v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_133 |c_#StackHeapBarrier|)))) is different from false [2021-10-13 21:33:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:33:06,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:33:06,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755193111] [2021-10-13 21:33:06,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755193111] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:33:06,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:33:06,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:33:06,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808464261] [2021-10-13 21:33:06,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:33:06,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:33:06,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:33:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2021-10-13 21:33:06,288 INFO L87 Difference]: Start difference. First operand 4601 states and 18131 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:33:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:33:13,494 INFO L93 Difference]: Finished difference Result 3844 states and 14726 transitions. [2021-10-13 21:33:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:33:13,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 21:33:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:33:13,524 INFO L225 Difference]: With dead ends: 3844 [2021-10-13 21:33:13,524 INFO L226 Difference]: Without dead ends: 3844 [2021-10-13 21:33:13,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3737.0ms TimeCoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2021-10-13 21:33:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2021-10-13 21:33:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 3844. [2021-10-13 21:33:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3633 states have (on average 4.0533993944398565) internal successors, (14726), 3843 states have internal predecessors, (14726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:33:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 14726 transitions. [2021-10-13 21:33:13,712 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 14726 transitions. Word has length 3 [2021-10-13 21:33:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:33:13,713 INFO L470 AbstractCegarLoop]: Abstraction has 3844 states and 14726 transitions. [2021-10-13 21:33:13,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:33:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 14726 transitions. [2021-10-13 21:33:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:33:13,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:33:13,714 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 21:33:13,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 21:33:13,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:33:13,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:33:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:33:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash 31218830, now seen corresponding path program 1 times [2021-10-13 21:33:13,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:33:13,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960002791] [2021-10-13 21:33:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:33:13,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:33:13,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:33:13,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:33:13,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 21:33:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:33:14,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:33:14,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:33:14,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:33:14,497 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:33:14,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 21:33:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:33:14,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:33:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:33:15,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:33:15,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960002791] [2021-10-13 21:33:15,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960002791] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:33:15,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:33:15,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:33:15,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611219223] [2021-10-13 21:33:15,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:33:15,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:33:15,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:33:15,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:33:15,156 INFO L87 Difference]: Start difference. First operand 3844 states and 14726 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:33:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:33:21,441 INFO L93 Difference]: Finished difference Result 19191 states and 73584 transitions. [2021-10-13 21:33:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:33:21,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 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 4 [2021-10-13 21:33:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:33:21,756 INFO L225 Difference]: With dead ends: 19191 [2021-10-13 21:33:21,757 INFO L226 Difference]: Without dead ends: 19191 [2021-10-13 21:33:21,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 881.7ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:33:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19191 states. [2021-10-13 21:33:22,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19191 to 3851. [2021-10-13 21:33:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3640 states have (on average 4.049450549450549) internal successors, (14740), 3850 states have internal predecessors, (14740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:33:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 14740 transitions. [2021-10-13 21:33:22,294 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 14740 transitions. Word has length 4 [2021-10-13 21:33:22,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:33:22,295 INFO L470 AbstractCegarLoop]: Abstraction has 3851 states and 14740 transitions. [2021-10-13 21:33:22,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:33:22,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 14740 transitions. [2021-10-13 21:33:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:33:22,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:33:22,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:33:22,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 21:33:22,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:33:22,511 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:33:22,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:33:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash 969512091, now seen corresponding path program 1 times [2021-10-13 21:33:22,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:33:22,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822908221] [2021-10-13 21:33:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:33:22,519 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:33:22,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:33:22,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:33:22,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 21:33:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:33:22,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 21:33:22,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:33:23,393 INFO L354 Elim1Store]: treesize reduction 361, result has 15.5 percent of original size [2021-10-13 21:33:23,393 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 6 case distinctions, treesize of input 78 treesize of output 124 [2021-10-13 21:33:23,414 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 21:33:23,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 355 treesize of output 343 [2021-10-13 21:33:32,202 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-13 21:33:32,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 131 [2021-10-13 21:34:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:34:34,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:34:36,517 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_135 (_ BitVec 32))) (or (and (forall ((v_ULTIMATE.start_create_fresh_int_array_~size_145 (_ BitVec 32))) (bvule (bvadd |c_ULTIMATE.start_main_~#t2~0.offset| (_ bv4 32)) (select (store |c_#length| v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_135 (bvmul v_ULTIMATE.start_create_fresh_int_array_~size_145 (_ bv4 32))) |c_ULTIMATE.start_main_~#t2~0.base|))) (bvule |c_ULTIMATE.start_main_~#t2~0.offset| (bvadd |c_ULTIMATE.start_main_~#t2~0.offset| (_ bv4 32)))) (not (bvult v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_135 |c_#StackHeapBarrier|)))) is different from false [2021-10-13 21:34:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:34:36,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:34:36,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822908221] [2021-10-13 21:34:36,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822908221] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:34:36,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:34:36,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:34:36,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220229602] [2021-10-13 21:34:36,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:34:36,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:34:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:34:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2021-10-13 21:34:36,525 INFO L87 Difference]: Start difference. First operand 3851 states and 14740 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:34:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:34:43,731 INFO L93 Difference]: Finished difference Result 3719 states and 14287 transitions. [2021-10-13 21:34:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:34:43,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 21:34:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:34:43,757 INFO L225 Difference]: With dead ends: 3719 [2021-10-13 21:34:43,757 INFO L226 Difference]: Without dead ends: 3719 [2021-10-13 21:34:43,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4107.1ms TimeCoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2021-10-13 21:34:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-10-13 21:34:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3719. [2021-10-13 21:34:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3719 states, 3526 states have (on average 4.051900170164492) internal successors, (14287), 3718 states have internal predecessors, (14287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:34:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 14287 transitions. [2021-10-13 21:34:43,926 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 14287 transitions. Word has length 5 [2021-10-13 21:34:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:34:43,927 INFO L470 AbstractCegarLoop]: Abstraction has 3719 states and 14287 transitions. [2021-10-13 21:34:43,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:34:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 14287 transitions. [2021-10-13 21:34:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:34:43,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:34:43,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:34:43,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 21:34:44,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:34:44,159 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:34:44,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:34:44,160 INFO L82 PathProgramCache]: Analyzing trace with hash 969512092, now seen corresponding path program 1 times [2021-10-13 21:34:44,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:34:44,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335388182] [2021-10-13 21:34:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:34:44,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:34:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:34:44,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:34:44,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 21:34:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:34:44,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:34:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:34:44,792 INFO L354 Elim1Store]: treesize reduction 510, result has 12.5 percent of original size [2021-10-13 21:34:44,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 886 treesize of output 900 [2021-10-13 21:34:52,676 INFO L354 Elim1Store]: treesize reduction 242, result has 35.8 percent of original size [2021-10-13 21:34:52,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 138 treesize of output 255 [2021-10-13 21:36:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:36:19,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:36:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:36:19,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:36:19,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335388182] [2021-10-13 21:36:19,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335388182] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:36:19,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:36:19,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 1] imperfect sequences [] total 4 [2021-10-13 21:36:19,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007337819] [2021-10-13 21:36:19,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:36:19,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:36:19,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:36:19,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=12, Unknown=6, NotChecked=0, Total=30 [2021-10-13 21:36:19,486 INFO L87 Difference]: Start difference. First operand 3719 states and 14287 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:38,859 WARN L207 SmtUtils]: Spent 12.16 s on a formula simplification. DAG size of input: 176 DAG size of output: 166 [2021-10-13 21:36:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:36:48,379 INFO L93 Difference]: Finished difference Result 3587 states and 13834 transitions. [2021-10-13 21:36:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:36:48,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 21:36:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:36:48,396 INFO L225 Difference]: With dead ends: 3587 [2021-10-13 21:36:48,397 INFO L226 Difference]: Without dead ends: 3587 [2021-10-13 21:36:48,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30420.6ms TimeCoverageRelationStatistics Valid=18, Invalid=15, Unknown=9, NotChecked=0, Total=42 [2021-10-13 21:36:48,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-10-13 21:36:48,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3587. [2021-10-13 21:36:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 3412 states have (on average 4.054513481828839) internal successors, (13834), 3586 states have internal predecessors, (13834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 13834 transitions. [2021-10-13 21:36:48,548 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 13834 transitions. Word has length 5 [2021-10-13 21:36:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:36:48,548 INFO L470 AbstractCegarLoop]: Abstraction has 3587 states and 13834 transitions. [2021-10-13 21:36:48,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 13834 transitions. [2021-10-13 21:36:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:36:48,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:36:48,550 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:36:48,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 21:36:48,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:36:48,766 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:36:48,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:36:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash -9902507, now seen corresponding path program 1 times [2021-10-13 21:36:48,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:36:48,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756570900] [2021-10-13 21:36:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:36:48,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:36:48,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:36:48,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:36:48,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 21:36:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:36:48,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:36:48,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:36:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:36:48,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:36:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:36:49,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:36:49,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756570900] [2021-10-13 21:36:49,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756570900] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:36:49,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:36:49,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:36:49,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715490024] [2021-10-13 21:36:49,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:36:49,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:36:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:36:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:36:49,014 INFO L87 Difference]: Start difference. First operand 3587 states and 13834 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:36:49,305 INFO L93 Difference]: Finished difference Result 4741 states and 17676 transitions. [2021-10-13 21:36:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:36:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 6 [2021-10-13 21:36:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:36:49,340 INFO L225 Difference]: With dead ends: 4741 [2021-10-13 21:36:49,340 INFO L226 Difference]: Without dead ends: 4702 [2021-10-13 21:36:49,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:36:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2021-10-13 21:36:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 4547. [2021-10-13 21:36:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 4342 states have (on average 3.9578535237217873) internal successors, (17185), 4546 states have internal predecessors, (17185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 17185 transitions. [2021-10-13 21:36:49,492 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 17185 transitions. Word has length 6 [2021-10-13 21:36:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:36:49,492 INFO L470 AbstractCegarLoop]: Abstraction has 4547 states and 17185 transitions. [2021-10-13 21:36:49,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 17185 transitions. [2021-10-13 21:36:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:36:49,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:36:49,494 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:36:49,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 21:36:49,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:36:49,707 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:36:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:36:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1909785529, now seen corresponding path program 1 times [2021-10-13 21:36:49,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:36:49,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561929069] [2021-10-13 21:36:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:36:49,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:36:49,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:36:49,711 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:36:49,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 21:36:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:36:49,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:36:49,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:36:50,268 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:36:50,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 21:36:51,124 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 21:36:51,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-10-13 21:36:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:36:51,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:36:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:36:51,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:36:51,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561929069] [2021-10-13 21:36:51,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561929069] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:36:51,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:36:51,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 21:36:51,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048418266] [2021-10-13 21:36:51,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:36:51,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:36:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:36:51,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:36:51,195 INFO L87 Difference]: Start difference. First operand 4547 states and 17185 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:36:51,434 INFO L93 Difference]: Finished difference Result 3677 states and 13779 transitions. [2021-10-13 21:36:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:36:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:36:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:36:51,454 INFO L225 Difference]: With dead ends: 3677 [2021-10-13 21:36:51,454 INFO L226 Difference]: Without dead ends: 3677 [2021-10-13 21:36:51,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:36:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-10-13 21:36:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3677. [2021-10-13 21:36:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3549 states have (on average 3.882502113271344) internal successors, (13779), 3676 states have internal predecessors, (13779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 13779 transitions. [2021-10-13 21:36:51,577 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 13779 transitions. Word has length 7 [2021-10-13 21:36:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:36:51,578 INFO L470 AbstractCegarLoop]: Abstraction has 3677 states and 13779 transitions. [2021-10-13 21:36:51,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:36:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 13779 transitions. [2021-10-13 21:36:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:36:51,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:36:51,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:36:51,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 21:36:51,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:36:51,794 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:36:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:36:51,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1909785527, now seen corresponding path program 1 times [2021-10-13 21:36:51,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:36:51,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444806115] [2021-10-13 21:36:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:36:51,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:36:51,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:36:51,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:36:51,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 21:36:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:36:51,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 21:36:51,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:36:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:36:52,396 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:36:52,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 116 [2021-10-13 21:36:52,821 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:36:52,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 116 treesize of output 169 [2021-10-13 21:37:17,072 INFO L354 Elim1Store]: treesize reduction 108, result has 18.8 percent of original size [2021-10-13 21:37:17,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 328 treesize of output 281 [2021-10-13 21:37:17,195 INFO L354 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2021-10-13 21:37:17,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 330 treesize of output 374 [2021-10-13 21:37:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:37:28,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:37:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:37:30,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:37:30,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444806115] [2021-10-13 21:37:30,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444806115] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:37:30,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:37:30,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:37:30,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190172711] [2021-10-13 21:37:30,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:37:30,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:37:30,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:37:30,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:37:30,469 INFO L87 Difference]: Start difference. First operand 3677 states and 13779 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:37:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:37:50,069 INFO L93 Difference]: Finished difference Result 8701 states and 32413 transitions. [2021-10-13 21:37:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 21:37:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:37:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:37:50,118 INFO L225 Difference]: With dead ends: 8701 [2021-10-13 21:37:50,118 INFO L226 Difference]: Without dead ends: 8701 [2021-10-13 21:37:50,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 13269.4ms TimeCoverageRelationStatistics Valid=50, Invalid=130, Unknown=2, NotChecked=0, Total=182 [2021-10-13 21:37:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8701 states. [2021-10-13 21:37:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8701 to 5304. [2021-10-13 21:37:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5176 states have (on average 3.9692812982998453) internal successors, (20545), 5303 states have internal predecessors, (20545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:37:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 20545 transitions. [2021-10-13 21:37:50,351 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 20545 transitions. Word has length 7 [2021-10-13 21:37:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:37:50,351 INFO L470 AbstractCegarLoop]: Abstraction has 5304 states and 20545 transitions. [2021-10-13 21:37:50,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:37:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 20545 transitions. [2021-10-13 21:37:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:37:50,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:37:50,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:37:50,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 21:37:50,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:37:50,567 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:37:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:37:50,568 INFO L82 PathProgramCache]: Analyzing trace with hash -306761261, now seen corresponding path program 1 times [2021-10-13 21:37:50,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:37:50,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388080495] [2021-10-13 21:37:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:37:50,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:37:50,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:37:50,571 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:37:50,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 21:37:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:37:50,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:37:50,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:37:51,250 INFO L354 Elim1Store]: treesize reduction 355, result has 16.9 percent of original size [2021-10-13 21:37:51,250 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 6 case distinctions, treesize of input 56 treesize of output 108 [2021-10-13 21:37:51,260 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 884 treesize of output 852 [2021-10-13 21:37:57,172 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-13 21:37:57,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 123 [2021-10-13 21:40:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:07,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:10,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:10,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388080495] [2021-10-13 21:40:10,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388080495] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:10,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:10,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:40:10,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644394898] [2021-10-13 21:40:10,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:40:10,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:40:10,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-13 21:40:10,166 INFO L87 Difference]: Start difference. First operand 5304 states and 20545 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:18,977 INFO L93 Difference]: Finished difference Result 5210 states and 20270 transitions. [2021-10-13 21:40:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:40:18,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:40:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:19,002 INFO L225 Difference]: With dead ends: 5210 [2021-10-13 21:40:19,003 INFO L226 Difference]: Without dead ends: 5210 [2021-10-13 21:40:19,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6333.1ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-10-13 21:40:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5210 states. [2021-10-13 21:40:19,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5210 to 5210. [2021-10-13 21:40:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 5096 states have (on average 3.977629513343799) internal successors, (20270), 5209 states have internal predecessors, (20270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 20270 transitions. [2021-10-13 21:40:19,273 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 20270 transitions. Word has length 7 [2021-10-13 21:40:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:19,273 INFO L470 AbstractCegarLoop]: Abstraction has 5210 states and 20270 transitions. [2021-10-13 21:40:19,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:40:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 20270 transitions. [2021-10-13 21:40:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:40:19,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:19,278 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:19,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 21:40:19,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:40:19,479 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:40:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:19,481 INFO L82 PathProgramCache]: Analyzing trace with hash -306761259, now seen corresponding path program 1 times [2021-10-13 21:40:19,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:19,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042098374] [2021-10-13 21:40:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:19,482 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:19,483 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:40:19,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 21:40:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:19,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 21:40:19,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:20,170 INFO L354 Elim1Store]: treesize reduction 502, result has 12.7 percent of original size [2021-10-13 21:40:20,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 253 treesize of output 295 [2021-10-13 21:40:24,553 INFO L354 Elim1Store]: treesize reduction 242, result has 35.8 percent of original size [2021-10-13 21:40:24,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 118 treesize of output 235 [2021-10-13 21:40:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:50,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:40:50,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:50,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042098374] [2021-10-13 21:40:50,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042098374] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:50,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:50,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-13 21:40:50,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408607630] [2021-10-13 21:40:50,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 21:40:50,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:50,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 21:40:50,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-13 21:40:50,611 INFO L87 Difference]: Start difference. First operand 5210 states and 20270 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:03,008 WARN L207 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2021-10-13 21:41:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:10,646 INFO L93 Difference]: Finished difference Result 5116 states and 19995 transitions. [2021-10-13 21:41:10,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:41:10,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 21:41:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:10,668 INFO L225 Difference]: With dead ends: 5116 [2021-10-13 21:41:10,668 INFO L226 Difference]: Without dead ends: 5116 [2021-10-13 21:41:10,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16243.4ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-13 21:41:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2021-10-13 21:41:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5116. [2021-10-13 21:41:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 5016 states have (on average 3.986244019138756) internal successors, (19995), 5115 states have internal predecessors, (19995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 19995 transitions. [2021-10-13 21:41:10,849 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 19995 transitions. Word has length 7 [2021-10-13 21:41:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:10,850 INFO L470 AbstractCegarLoop]: Abstraction has 5116 states and 19995 transitions. [2021-10-13 21:41:10,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 19995 transitions. [2021-10-13 21:41:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 21:41:10,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:10,851 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-13 21:41:10,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:11,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:41:11,066 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:41:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -730044146, now seen corresponding path program 2 times [2021-10-13 21:41:11,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:11,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163670300] [2021-10-13 21:41:11,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:41:11,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:11,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:11,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:41:11,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 21:41:11,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:41:11,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:11,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:41:11,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:41:11,816 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 21:41:11,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 21:41:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:12,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:14,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:14,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163670300] [2021-10-13 21:41:14,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163670300] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:41:14,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:41:14,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 21:41:14,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588132514] [2021-10-13 21:41:14,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:41:14,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:41:14,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:41:14,072 INFO L87 Difference]: Start difference. First operand 5116 states and 19995 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2021-10-13 21:41:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:37,630 INFO L93 Difference]: Finished difference Result 45837 states and 179549 transitions. [2021-10-13 21:41:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:41:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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 8 [2021-10-13 21:41:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:38,149 INFO L225 Difference]: With dead ends: 45837 [2021-10-13 21:41:38,150 INFO L226 Difference]: Without dead ends: 45837 [2021-10-13 21:41:38,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6956.1ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:41:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45837 states. [2021-10-13 21:41:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45837 to 5133. [2021-10-13 21:41:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 5033 states have (on average 3.979535068547586) internal successors, (20029), 5132 states have internal predecessors, (20029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:41:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 20029 transitions. [2021-10-13 21:41:39,217 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 20029 transitions. Word has length 8 [2021-10-13 21:41:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:39,217 INFO L470 AbstractCegarLoop]: Abstraction has 5133 states and 20029 transitions. [2021-10-13 21:41:39,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2021-10-13 21:41:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 20029 transitions. [2021-10-13 21:41:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:41:39,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:39,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:39,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:39,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:41:39,422 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-13 21:41:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1555196235, now seen corresponding path program 1 times [2021-10-13 21:41:39,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:39,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425875734] [2021-10-13 21:41:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:41:39,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:39,427 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:41:39,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 21:41:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:39,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:41:39,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:40,138 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 21:41:40,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 361 treesize of output 398 [2021-10-13 21:41:45,533 INFO L354 Elim1Store]: treesize reduction 231, result has 38.7 percent of original size [2021-10-13 21:41:45,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 124 treesize of output 252 Received shutdown request... [2021-10-13 21:42:45,765 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-13 21:42:45,767 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 21:42:45,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 21:42:45,794 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:42:45,797 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:42:45,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:42:45,969 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. [2021-10-13 21:42:45,971 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:42:45,971 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:42:45,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 21:42:45,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 21:42:45,974 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 21:42:45,974 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 21:42:45,974 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 21:42:45,974 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 21:42:45,974 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 21:42:45,974 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 21:42:45,975 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 21:42:45,975 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 21:42:45,975 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:42:45,975 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:42:45,975 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:42:45,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:42:45,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 21:42:45,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 21:42:45,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:42:45,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:42:45,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:42:45,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:42:45,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-13 21:42:45,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-13 21:42:45,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:42:45,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:42:45,985 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:42:45,986 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:42:45,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:42:45 BasicIcfg [2021-10-13 21:42:45,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:42:45,991 INFO L168 Benchmark]: Toolchain (without parser) took 825070.20 ms. Allocated memory was 157.3 MB in the beginning and 496.0 MB in the end (delta: 338.7 MB). Free memory was 132.0 MB in the beginning and 180.0 MB in the end (delta: -48.0 MB). Peak memory consumption was 358.6 MB. Max. memory is 8.0 GB. [2021-10-13 21:42:45,991 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 157.3 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:42:45,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.10 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 117.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-13 21:42:45,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.24 ms. Allocated memory is still 157.3 MB. Free memory was 117.8 MB in the beginning and 115.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:42:45,997 INFO L168 Benchmark]: Boogie Preprocessor took 79.66 ms. Allocated memory is still 157.3 MB. Free memory was 115.3 MB in the beginning and 113.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 21:42:45,998 INFO L168 Benchmark]: RCFGBuilder took 1685.53 ms. Allocated memory is still 157.3 MB. Free memory was 113.2 MB in the beginning and 113.6 MB in the end (delta: -471.7 kB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2021-10-13 21:42:45,998 INFO L168 Benchmark]: TraceAbstraction took 822794.59 ms. Allocated memory was 157.3 MB in the beginning and 496.0 MB in the end (delta: 338.7 MB). Free memory was 113.1 MB in the beginning and 180.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 339.9 MB. Max. memory is 8.0 GB. [2021-10-13 21:42:46,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 157.3 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 417.10 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 117.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 74.24 ms. Allocated memory is still 157.3 MB. Free memory was 117.8 MB in the beginning and 115.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.66 ms. Allocated memory is still 157.3 MB. Free memory was 115.3 MB in the beginning and 113.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1685.53 ms. Allocated memory is still 157.3 MB. Free memory was 113.2 MB in the beginning and 113.6 MB in the end (delta: -471.7 kB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 822794.59 ms. Allocated memory was 157.3 MB in the beginning and 496.0 MB in the end (delta: 338.7 MB). Free memory was 113.1 MB in the beginning and 180.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 339.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42237.9ms, 232 PlacesBefore, 78 PlacesAfterwards, 237 TransitionsBefore, 70 TransitionsAfterwards, 3194 CoEnabledTransitionPairs, 8 FixpointIterations, 135 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 9 ConcurrentYvCompositions, 13 ChoiceCompositions, 249 TotalNumberOfCompositions, 9998 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6868, positive: 6656, positive conditional: 0, positive unconditional: 6656, negative: 212, negative conditional: 0, negative unconditional: 212, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2314, positive: 2257, positive conditional: 0, positive unconditional: 2257, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2314, positive: 2252, positive conditional: 0, positive unconditional: 2252, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3763, positive: 1026, positive conditional: 0, positive unconditional: 1026, negative: 2738, negative conditional: 0, negative unconditional: 2738, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6868, positive: 4399, positive conditional: 0, positive unconditional: 4399, negative: 155, negative conditional: 0, negative unconditional: 155, unknown: 2314, unknown conditional: 0, unknown unconditional: 2314] , Statistics on independence cache: Total cache size (in pairs): 399, Positive cache size: 381, Positive conditional cache size: 0, Positive unconditional cache size: 381, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 5ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 261 locations, 42 error locations. Started 1 CEGAR loops. OverallTime: 822624.1ms, OverallIterations: 14, TraceHistogramMax: 6, EmptinessCheckTime: 58.7ms, AutomataDifference: 252439.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42591.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 619 SDtfs, 3014 SDslu, 1686 SDs, 0 SdLazy, 2166 SolverSat, 210 SolverUnsat, 79 SolverUnknown, 0 SolverNotchecked, 185900.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 98432.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5360occurred in iteration=1, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4256.7ms AutomataMinimizationTime, 13 MinimizatonAttempts, 68712 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 143.6ms SsaConstructionTime, 713.3ms SatisfiabilityAnalysisTime, 451936.9ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 106 ConstructedInterpolants, 39 QuantifiedInterpolants, 6285 SizeOfPredicates, 107 NumberOfNonLiveVariables, 999 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 26 InterpolantComputations, 20 PerfectInterpolantSequences, 2/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown