/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-counter-fun.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:02:25,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:02:25,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:02:26,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 16:02:26,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 16:02:26,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 16:02:26,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 16:02:26,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 16:02:26,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 16:02:26,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 16:02:26,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 16:02:26,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 16:02:26,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:02:26,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:02:26,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:02:26,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:02:26,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:02:26,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:02:26,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:02:26,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:02:26,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:02:26,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:02:26,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:02:26,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:02:26,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-07 16:02:26,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-07 16:02:26,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-07 16:02:26,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-07 16:02:26,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-07 16:02:26,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-07 16:02:26,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:02:26,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:02:26,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:02:26,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:02:26,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:02:26,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:02:26,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:02:26,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:02:26,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:02:26,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:02:26,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:02:26,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:02:26,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:02:26,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:02:26,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:02:26,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:02:26,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:02:26,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:02:26,122 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:02:26,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:02:26,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:02:26,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:02:26,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:02:26,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:02:26,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:02:26,123 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:02:26,124 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:02:26,124 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:02:26,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:02:26,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:02:26,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:02:26,125 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:02:26,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:02:26,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:02:26,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:02:26,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:02:26,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:02:26,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:02:26,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:02:26,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:02:26,127 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:02:26,127 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:02:26,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:02:26,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:02:26,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:02:26,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:02:26,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:02:26,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:02:26,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:02:26,592 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:02:26,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2021-10-07 16:02:26,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e3e8ae13/48774a0a2ade4616ba8fe06b699b737e/FLAGaf2648f1a [2021-10-07 16:02:27,279 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:02:27,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2021-10-07 16:02:27,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e3e8ae13/48774a0a2ade4616ba8fe06b699b737e/FLAGaf2648f1a [2021-10-07 16:02:27,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e3e8ae13/48774a0a2ade4616ba8fe06b699b737e [2021-10-07 16:02:27,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:02:27,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:02:27,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:02:27,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:02:27,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:02:27,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:02:27" (1/1) ... [2021-10-07 16:02:27,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbe2247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:27, skipping insertion in model container [2021-10-07 16:02:27,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:02:27" (1/1) ... [2021-10-07 16:02:27,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:02:27,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:02:27,906 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-counter-fun.wvr.c[2674,2687] [2021-10-07 16:02:27,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:02:27,929 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:02:27,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:02:27,954 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-counter-fun.wvr.c[2674,2687] [2021-10-07 16:02:27,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:02:27,969 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:02:28,023 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-counter-fun.wvr.c[2674,2687] [2021-10-07 16:02:28,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:02:28,046 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:02:28,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28 WrapperNode [2021-10-07 16:02:28,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:02:28,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:02:28,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:02:28,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:02:28,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:02:28,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:02:28,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:02:28,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:02:28,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:02:28,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:02:28,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:02:28,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:02:28,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (1/1) ... [2021-10-07 16:02:28,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:02:28,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:02:28,195 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) [2021-10-07 16:02:28,197 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 [2021-10-07 16:02:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:02:28,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:02:28,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:02:28,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:02:28,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:02:28,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:02:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:02:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:02:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:02:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:02:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:02:28,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:02:28,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:02:28,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:02:28,253 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:02:30,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:02:30,502 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-07 16:02:30,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:02:30 BoogieIcfgContainer [2021-10-07 16:02:30,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:02:30,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:02:30,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:02:30,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:02:30,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:02:27" (1/3) ... [2021-10-07 16:02:30,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57abb45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:02:30, skipping insertion in model container [2021-10-07 16:02:30,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:02:28" (2/3) ... [2021-10-07 16:02:30,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57abb45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:02:30, skipping insertion in model container [2021-10-07 16:02:30,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:02:30" (3/3) ... [2021-10-07 16:02:30,518 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2021-10-07 16:02:30,530 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:02:30,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-10-07 16:02:30,531 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:02:30,592 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,592 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,592 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,593 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,593 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,593 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,595 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,595 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,595 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,596 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,596 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,596 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,597 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,597 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,597 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,597 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,598 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,598 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,599 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,599 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,599 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,599 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,600 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,600 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,600 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,600 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,600 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,601 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,601 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,601 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,601 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,601 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,601 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,602 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,602 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,602 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,602 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,602 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,603 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,604 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,604 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,604 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,606 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,606 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,606 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,606 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,607 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,609 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,611 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,614 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,616 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,616 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,618 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,619 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,620 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,624 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,626 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,627 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,627 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,628 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,628 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,629 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,629 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,630 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,630 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,631 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,631 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,631 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,631 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,632 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,632 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,632 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,632 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,632 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,633 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,633 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,633 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,633 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,633 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,634 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,634 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,636 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,638 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,638 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,639 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,641 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,643 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,644 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,645 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,646 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,647 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,648 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,649 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,650 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,652 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,653 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,654 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,655 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,655 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,656 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,656 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,657 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,660 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,660 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,660 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,660 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,661 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,661 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,661 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,661 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,661 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,662 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,664 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,665 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:02:30,670 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:02:30,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:02:30,728 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 [2021-10-07 16:02:30,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-10-07 16:02:30,752 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:02:30,762 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 178 transitions, 372 flow [2021-10-07 16:02:30,767 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 178 transitions, 372 flow [2021-10-07 16:02:30,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 172 places, 178 transitions, 372 flow [2021-10-07 16:02:30,858 INFO L129 PetriNetUnfolder]: 13/176 cut-off events. [2021-10-07 16:02:30,859 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:02:30,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 176 events. 13/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 260 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2021-10-07 16:02:30,869 INFO L116 LiptonReduction]: Number of co-enabled transitions 1720 [2021-10-07 16:03:01,107 INFO L131 LiptonReduction]: Checked pairs total: 2458 [2021-10-07 16:03:01,107 INFO L133 LiptonReduction]: Total number of compositions: 186 [2021-10-07 16:03:01,118 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 55 transitions, 126 flow [2021-10-07 16:03:01,191 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 793 states, 379 states have (on average 5.493403693931398) internal successors, (2082), 792 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 793 states, 379 states have (on average 5.493403693931398) internal successors, (2082), 792 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:03:01,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:01,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:03:01,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:01,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:01,210 INFO L82 PathProgramCache]: Analyzing trace with hash 27723, now seen corresponding path program 1 times [2021-10-07 16:03:01,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:01,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615335820] [2021-10-07 16:03:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:01,224 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:01,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:01,227 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) [2021-10-07 16:03:01,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:03:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:01,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:03:01,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:01,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:01,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:01,714 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:03:01,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:03:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:01,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:01,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:01,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615335820] [2021-10-07 16:03:01,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615335820] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:01,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:01,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:03:01,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360085164] [2021-10-07 16:03:01,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:03:01,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:01,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:03:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:01,928 INFO L87 Difference]: Start difference. First operand has 793 states, 379 states have (on average 5.493403693931398) internal successors, (2082), 792 states have internal predecessors, (2082), 0 states have call successors, (0), 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) [2021-10-07 16:03:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:02,523 INFO L93 Difference]: Finished difference Result 529 states and 1335 transitions. [2021-10-07 16:03:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:03:02,526 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 [2021-10-07 16:03:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:02,548 INFO L225 Difference]: With dead ends: 529 [2021-10-07 16:03:02,548 INFO L226 Difference]: Without dead ends: 529 [2021-10-07 16:03:02,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:02,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-10-07 16:03:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 268. [2021-10-07 16:03:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 167 states have (on average 4.077844311377246) internal successors, (681), 267 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 681 transitions. [2021-10-07 16:03:02,626 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 681 transitions. Word has length 2 [2021-10-07 16:03:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:02,626 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 681 transitions. [2021-10-07 16:03:02,627 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) [2021-10-07 16:03:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 681 transitions. [2021-10-07 16:03:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:03:02,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:02,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:03:02,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:02,828 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 [2021-10-07 16:03:02,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:02,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:02,829 INFO L82 PathProgramCache]: Analyzing trace with hash 27724, now seen corresponding path program 1 times [2021-10-07 16:03:02,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:02,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383789004] [2021-10-07 16:03:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:02,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:02,832 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) [2021-10-07 16:03:02,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:03:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:02,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:03:02,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:02,922 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:03:02,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 16:03:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:02,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:02,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:02,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383789004] [2021-10-07 16:03:02,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383789004] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:02,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:02,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:03:02,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698151597] [2021-10-07 16:03:02,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:03:02,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:03:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:03:02,963 INFO L87 Difference]: Start difference. First operand 268 states and 681 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) [2021-10-07 16:03:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:03,174 INFO L93 Difference]: Finished difference Result 266 states and 675 transitions. [2021-10-07 16:03:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:03:03,175 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 [2021-10-07 16:03:03,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:03,179 INFO L225 Difference]: With dead ends: 266 [2021-10-07 16:03:03,179 INFO L226 Difference]: Without dead ends: 266 [2021-10-07 16:03:03,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:03:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-07 16:03:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-07 16:03:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 167 states have (on average 4.041916167664671) internal successors, (675), 265 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 675 transitions. [2021-10-07 16:03:03,202 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 675 transitions. Word has length 2 [2021-10-07 16:03:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:03,202 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 675 transitions. [2021-10-07 16:03:03,202 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) [2021-10-07 16:03:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 675 transitions. [2021-10-07 16:03:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:03:03,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:03,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:03:03,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:03,420 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 [2021-10-07 16:03:03,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:03,423 INFO L82 PathProgramCache]: Analyzing trace with hash 863866, now seen corresponding path program 1 times [2021-10-07 16:03:03,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:03,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923894705] [2021-10-07 16:03:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:03,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:03,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:03,426 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) [2021-10-07 16:03:03,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:03:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:03:03,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:03,570 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:03:03,571 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 3 case distinctions, treesize of input 30 treesize of output 37 [2021-10-07 16:03:03,689 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 16:03:03,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 40 [2021-10-07 16:03:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:03,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:03,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:03,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923894705] [2021-10-07 16:03:03,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923894705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:03,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:03,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:03:03,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790431894] [2021-10-07 16:03:03,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:03:03,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:03:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:03,865 INFO L87 Difference]: Start difference. First operand 266 states and 675 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:04,081 INFO L93 Difference]: Finished difference Result 216 states and 525 transitions. [2021-10-07 16:03:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:03:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:03:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:04,086 INFO L225 Difference]: With dead ends: 216 [2021-10-07 16:03:04,086 INFO L226 Difference]: Without dead ends: 216 [2021-10-07 16:03:04,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-07 16:03:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-07 16:03:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 143 states have (on average 3.6713286713286712) internal successors, (525), 215 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 525 transitions. [2021-10-07 16:03:04,115 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 525 transitions. Word has length 3 [2021-10-07 16:03:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:04,116 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 525 transitions. [2021-10-07 16:03:04,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:04,116 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 525 transitions. [2021-10-07 16:03:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:03:04,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:04,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:03:04,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:04,331 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 [2021-10-07 16:03:04,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:04,334 INFO L82 PathProgramCache]: Analyzing trace with hash 863867, now seen corresponding path program 1 times [2021-10-07 16:03:04,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:04,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661023359] [2021-10-07 16:03:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:04,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:04,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:04,336 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) [2021-10-07 16:03:04,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:03:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:04,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:03:04,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:04,658 INFO L354 Elim1Store]: treesize reduction 145, result has 24.9 percent of original size [2021-10-07 16:03:04,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 68 [2021-10-07 16:03:04,678 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 69 treesize of output 67 [2021-10-07 16:03:04,859 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-07 16:03:04,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 39 [2021-10-07 16:03:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:05,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:05,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:05,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661023359] [2021-10-07 16:03:05,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661023359] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:05,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:05,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:03:05,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484571330] [2021-10-07 16:03:05,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:03:05,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:03:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:03:05,301 INFO L87 Difference]: Start difference. First operand 216 states and 525 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) [2021-10-07 16:03:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:07,520 INFO L93 Difference]: Finished difference Result 166 states and 375 transitions. [2021-10-07 16:03:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:03:07,521 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 [2021-10-07 16:03:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:07,523 INFO L225 Difference]: With dead ends: 166 [2021-10-07 16:03:07,523 INFO L226 Difference]: Without dead ends: 166 [2021-10-07 16:03:07,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 279.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:03:07,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-07 16:03:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-10-07 16:03:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 119 states have (on average 3.1512605042016806) internal successors, (375), 165 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 375 transitions. [2021-10-07 16:03:07,533 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 375 transitions. Word has length 3 [2021-10-07 16:03:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:07,533 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 375 transitions. [2021-10-07 16:03:07,533 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) [2021-10-07 16:03:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 375 transitions. [2021-10-07 16:03:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:03:07,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:07,534 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:03:07,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:07,745 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 [2021-10-07 16:03:07,746 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 26752203, now seen corresponding path program 1 times [2021-10-07 16:03:07,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:07,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914465917] [2021-10-07 16:03:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:07,749 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:07,750 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) [2021-10-07 16:03:07,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:03:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:07,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:03:07,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:07,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:07,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:08,016 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:03:08,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:03:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:08,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:08,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:08,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914465917] [2021-10-07 16:03:08,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914465917] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:08,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:08,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:03:08,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379076731] [2021-10-07 16:03:08,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:03:08,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:03:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:03:08,656 INFO L87 Difference]: Start difference. First operand 166 states and 375 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) [2021-10-07 16:03:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:13,573 INFO L93 Difference]: Finished difference Result 959 states and 2191 transitions. [2021-10-07 16:03:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:03:13,575 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 [2021-10-07 16:03:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:13,583 INFO L225 Difference]: With dead ends: 959 [2021-10-07 16:03:13,583 INFO L226 Difference]: Without dead ends: 959 [2021-10-07 16:03:13,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 752.4ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:03:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-10-07 16:03:13,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 174. [2021-10-07 16:03:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 3.078740157480315) internal successors, (391), 173 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:13,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 391 transitions. [2021-10-07 16:03:13,598 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 391 transitions. Word has length 4 [2021-10-07 16:03:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:13,598 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 391 transitions. [2021-10-07 16:03:13,599 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) [2021-10-07 16:03:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 391 transitions. [2021-10-07 16:03:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:03:13,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:13,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:03:13,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-07 16:03:13,812 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 [2021-10-07 16:03:13,814 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:13,815 INFO L82 PathProgramCache]: Analyzing trace with hash 830198103, now seen corresponding path program 1 times [2021-10-07 16:03:13,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:13,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830607414] [2021-10-07 16:03:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:13,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:13,817 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) [2021-10-07 16:03:13,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:03:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:13,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:03:13,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:13,935 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:03:13,935 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 2 case distinctions, treesize of input 27 treesize of output 34 [2021-10-07 16:03:14,044 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-07 16:03:14,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 57 [2021-10-07 16:03:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:14,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:14,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:14,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830607414] [2021-10-07 16:03:14,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830607414] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:14,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:14,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:03:14,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672061360] [2021-10-07 16:03:14,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:03:14,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:03:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:14,237 INFO L87 Difference]: Start difference. First operand 174 states and 391 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:14,372 INFO L93 Difference]: Finished difference Result 160 states and 363 transitions. [2021-10-07 16:03:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:03:14,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:03:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:14,375 INFO L225 Difference]: With dead ends: 160 [2021-10-07 16:03:14,375 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 16:03:14,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:14,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 16:03:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-07 16:03:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 123 states have (on average 2.951219512195122) internal successors, (363), 159 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 363 transitions. [2021-10-07 16:03:14,383 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 363 transitions. Word has length 5 [2021-10-07 16:03:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:14,384 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 363 transitions. [2021-10-07 16:03:14,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 363 transitions. [2021-10-07 16:03:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:03:14,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:14,385 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:03:14,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:14,598 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 [2021-10-07 16:03:14,598 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:14,599 INFO L82 PathProgramCache]: Analyzing trace with hash 830198105, now seen corresponding path program 1 times [2021-10-07 16:03:14,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:14,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371303599] [2021-10-07 16:03:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:14,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:14,602 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) [2021-10-07 16:03:14,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:03:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:14,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:03:14,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:14,870 INFO L354 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2021-10-07 16:03:14,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 63 [2021-10-07 16:03:14,880 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 65 treesize of output 63 [2021-10-07 16:03:15,153 INFO L354 Elim1Store]: treesize reduction 64, result has 27.3 percent of original size [2021-10-07 16:03:15,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2021-10-07 16:03:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:17,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:18,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:18,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371303599] [2021-10-07 16:03:18,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371303599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:18,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:18,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:03:18,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391898224] [2021-10-07 16:03:18,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:03:18,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:03:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:03:18,147 INFO L87 Difference]: Start difference. First operand 160 states and 363 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) [2021-10-07 16:03:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:22,735 INFO L93 Difference]: Finished difference Result 146 states and 335 transitions. [2021-10-07 16:03:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:03:22,736 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 [2021-10-07 16:03:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:22,737 INFO L225 Difference]: With dead ends: 146 [2021-10-07 16:03:22,737 INFO L226 Difference]: Without dead ends: 146 [2021-10-07 16:03:22,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2308.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:03:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-07 16:03:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-10-07 16:03:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 119 states have (on average 2.8151260504201683) internal successors, (335), 145 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 335 transitions. [2021-10-07 16:03:22,744 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 335 transitions. Word has length 5 [2021-10-07 16:03:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:22,744 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 335 transitions. [2021-10-07 16:03:22,744 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) [2021-10-07 16:03:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 335 transitions. [2021-10-07 16:03:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:03:22,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:22,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:03:22,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:22,955 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 [2021-10-07 16:03:22,956 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:22,969 INFO L82 PathProgramCache]: Analyzing trace with hash -33667969, now seen corresponding path program 1 times [2021-10-07 16:03:22,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:22,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526553255] [2021-10-07 16:03:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:22,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:22,972 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) [2021-10-07 16:03:22,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:03:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:23,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:03:23,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:23,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-07 16:03:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:23,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:23,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:23,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526553255] [2021-10-07 16:03:23,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526553255] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:23,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:23,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 16:03:23,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370051793] [2021-10-07 16:03:23,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:03:23,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:03:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:23,120 INFO L87 Difference]: Start difference. First operand 146 states and 335 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2021-10-07 16:03:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:23,277 INFO L93 Difference]: Finished difference Result 116 states and 262 transitions. [2021-10-07 16:03:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:03:23,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 6 [2021-10-07 16:03:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:23,285 INFO L225 Difference]: With dead ends: 116 [2021-10-07 16:03:23,285 INFO L226 Difference]: Without dead ends: 116 [2021-10-07 16:03:23,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:03:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-07 16:03:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-07 16:03:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 2.673469387755102) internal successors, (262), 115 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 262 transitions. [2021-10-07 16:03:23,290 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 262 transitions. Word has length 6 [2021-10-07 16:03:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:23,291 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 262 transitions. [2021-10-07 16:03:23,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2021-10-07 16:03:23,291 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 262 transitions. [2021-10-07 16:03:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:03:23,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:23,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:03:23,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-07 16:03:23,503 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 [2021-10-07 16:03:23,505 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:23,506 INFO L82 PathProgramCache]: Analyzing trace with hash -33667968, now seen corresponding path program 1 times [2021-10-07 16:03:23,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:23,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217884250] [2021-10-07 16:03:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:23,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:23,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:23,508 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) [2021-10-07 16:03:23,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:03:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:23,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:03:23,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:23,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:23,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:23,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217884250] [2021-10-07 16:03:23,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217884250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:23,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:23,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:03:23,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769337566] [2021-10-07 16:03:23,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:03:23,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:03:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:03:23,786 INFO L87 Difference]: Start difference. First operand 116 states and 262 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) [2021-10-07 16:03:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:24,045 INFO L93 Difference]: Finished difference Result 164 states and 349 transitions. [2021-10-07 16:03:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:03:24,046 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 [2021-10-07 16:03:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:24,047 INFO L225 Difference]: With dead ends: 164 [2021-10-07 16:03:24,047 INFO L226 Difference]: Without dead ends: 155 [2021-10-07 16:03:24,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:03:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-07 16:03:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2021-10-07 16:03:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 132 states have (on average 2.484848484848485) internal successors, (328), 149 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 328 transitions. [2021-10-07 16:03:24,054 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 328 transitions. Word has length 6 [2021-10-07 16:03:24,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:24,054 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 328 transitions. [2021-10-07 16:03:24,054 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) [2021-10-07 16:03:24,054 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 328 transitions. [2021-10-07 16:03:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:03:24,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:24,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:24,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-07 16:03:24,270 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 [2021-10-07 16:03:24,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:24,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:24,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1858453308, now seen corresponding path program 1 times [2021-10-07 16:03:24,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:24,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490361498] [2021-10-07 16:03:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:24,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:24,275 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) [2021-10-07 16:03:24,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:03:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:24,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:03:24,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:24,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:24,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:24,563 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:03:24,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 16:03:24,611 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:03:24,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 16:03:24,781 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:03:24,782 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 41 treesize of output 43 [2021-10-07 16:03:24,794 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:03:24,795 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 40 treesize of output 40 [2021-10-07 16:03:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:26,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:27,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:27,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490361498] [2021-10-07 16:03:27,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490361498] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:27,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:27,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:03:27,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082747992] [2021-10-07 16:03:27,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:03:27,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:03:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:03:27,564 INFO L87 Difference]: Start difference. First operand 150 states and 328 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) [2021-10-07 16:03:36,809 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-10-07 16:03:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:43,602 INFO L93 Difference]: Finished difference Result 874 states and 1971 transitions. [2021-10-07 16:03:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:03:43,603 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 [2021-10-07 16:03:43,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:43,610 INFO L225 Difference]: With dead ends: 874 [2021-10-07 16:03:43,610 INFO L226 Difference]: Without dead ends: 854 [2021-10-07 16:03:43,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 10145.5ms TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:03:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-10-07 16:03:43,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 220. [2021-10-07 16:03:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 202 states have (on average 2.8217821782178216) internal successors, (570), 219 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 570 transitions. [2021-10-07 16:03:43,625 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 570 transitions. Word has length 7 [2021-10-07 16:03:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:43,625 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 570 transitions. [2021-10-07 16:03:43,625 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) [2021-10-07 16:03:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 570 transitions. [2021-10-07 16:03:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:03:43,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:43,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:43,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:43,838 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 [2021-10-07 16:03:43,839 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:43,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1858453302, now seen corresponding path program 1 times [2021-10-07 16:03:43,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:43,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380685618] [2021-10-07 16:03:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:43,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:43,843 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) [2021-10-07 16:03:43,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:03:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:43,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:03:43,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:43,993 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:03:43,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 16:03:44,038 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:03:44,038 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 16 treesize of output 21 [2021-10-07 16:03:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:44,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:44,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:44,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380685618] [2021-10-07 16:03:44,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380685618] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:44,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:44,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 16:03:44,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075941530] [2021-10-07 16:03:44,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:03:44,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:03:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:03:44,141 INFO L87 Difference]: Start difference. First operand 220 states and 570 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-07 16:03:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:44,388 INFO L93 Difference]: Finished difference Result 190 states and 463 transitions. [2021-10-07 16:03:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:03:44,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 7 [2021-10-07 16:03:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:44,391 INFO L225 Difference]: With dead ends: 190 [2021-10-07 16:03:44,391 INFO L226 Difference]: Without dead ends: 190 [2021-10-07 16:03:44,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:03:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-07 16:03:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-10-07 16:03:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 179 states have (on average 2.5865921787709496) internal successors, (463), 189 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 463 transitions. [2021-10-07 16:03:44,401 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 463 transitions. Word has length 7 [2021-10-07 16:03:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:44,402 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 463 transitions. [2021-10-07 16:03:44,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-07 16:03:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 463 transitions. [2021-10-07 16:03:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:03:44,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:44,405 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:44,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:44,617 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 [2021-10-07 16:03:44,618 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1858453312, now seen corresponding path program 1 times [2021-10-07 16:03:44,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:44,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863395475] [2021-10-07 16:03:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:44,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:44,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:44,622 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) [2021-10-07 16:03:44,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:03:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:44,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:03:44,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:44,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:44,850 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:03:44,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 21 [2021-10-07 16:03:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:44,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:44,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863395475] [2021-10-07 16:03:44,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863395475] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:44,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:44,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:03:44,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232280403] [2021-10-07 16:03:44,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:03:44,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:03:44,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:03:44,955 INFO L87 Difference]: Start difference. First operand 190 states and 463 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-10-07 16:03:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:45,201 INFO L93 Difference]: Finished difference Result 298 states and 653 transitions. [2021-10-07 16:03:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:03:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 7 [2021-10-07 16:03:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:45,207 INFO L225 Difference]: With dead ends: 298 [2021-10-07 16:03:45,207 INFO L226 Difference]: Without dead ends: 248 [2021-10-07 16:03:45,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:03:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-07 16:03:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 240. [2021-10-07 16:03:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 229 states have (on average 2.458515283842795) internal successors, (563), 239 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 563 transitions. [2021-10-07 16:03:45,216 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 563 transitions. Word has length 7 [2021-10-07 16:03:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:45,217 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 563 transitions. [2021-10-07 16:03:45,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2021-10-07 16:03:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 563 transitions. [2021-10-07 16:03:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:03:45,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:45,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:45,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:45,430 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 [2021-10-07 16:03:45,431 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:45,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:45,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1787837213, now seen corresponding path program 1 times [2021-10-07 16:03:45,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:45,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039702278] [2021-10-07 16:03:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:45,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:45,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:45,434 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) [2021-10-07 16:03:45,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:03:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:45,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:03:45,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:45,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 16:03:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:45,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:45,808 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:03:45,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 62 [2021-10-07 16:03:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:46,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:46,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039702278] [2021-10-07 16:03:46,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039702278] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:46,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:46,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:03:46,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173242610] [2021-10-07 16:03:46,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:03:46,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:46,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:03:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:03:46,633 INFO L87 Difference]: Start difference. First operand 240 states and 563 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-07 16:03:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:51,135 INFO L93 Difference]: Finished difference Result 492 states and 1159 transitions. [2021-10-07 16:03:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:03:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 8 [2021-10-07 16:03:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:51,141 INFO L225 Difference]: With dead ends: 492 [2021-10-07 16:03:51,141 INFO L226 Difference]: Without dead ends: 469 [2021-10-07 16:03:51,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1290.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:03:51,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-10-07 16:03:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 364. [2021-10-07 16:03:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 353 states have (on average 2.668555240793201) internal successors, (942), 363 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 942 transitions. [2021-10-07 16:03:51,157 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 942 transitions. Word has length 8 [2021-10-07 16:03:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:51,158 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 942 transitions. [2021-10-07 16:03:51,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-07 16:03:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 942 transitions. [2021-10-07 16:03:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:03:51,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:51,159 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:03:51,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:51,372 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 [2021-10-07 16:03:51,373 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:03:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:51,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1675584971, now seen corresponding path program 2 times [2021-10-07 16:03:51,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:51,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683999787] [2021-10-07 16:03:51,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:03:51,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:51,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:51,377 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) [2021-10-07 16:03:51,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:03:51,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:03:51,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:03:51,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:03:51,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:51,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:51,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:51,768 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:03:51,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:03:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:52,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:53,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:53,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683999787] [2021-10-07 16:03:53,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683999787] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:53,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:53,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:03:53,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571816528] [2021-10-07 16:03:53,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:03:53,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:03:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:03:53,977 INFO L87 Difference]: Start difference. First operand 364 states and 942 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) [2021-10-07 16:04:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:13,833 INFO L93 Difference]: Finished difference Result 1259 states and 3085 transitions. [2021-10-07 16:04:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:04:13,835 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 [2021-10-07 16:04:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:13,844 INFO L225 Difference]: With dead ends: 1259 [2021-10-07 16:04:13,845 INFO L226 Difference]: Without dead ends: 1259 [2021-10-07 16:04:13,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6770.5ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:04:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-10-07 16:04:13,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 384. [2021-10-07 16:04:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 373 states have (on average 2.6327077747989276) internal successors, (982), 383 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 982 transitions. [2021-10-07 16:04:13,869 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 982 transitions. Word has length 8 [2021-10-07 16:04:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 982 transitions. [2021-10-07 16:04:13,869 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) [2021-10-07 16:04:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 982 transitions. [2021-10-07 16:04:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:04:13,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:13,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:04:13,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:04:14,082 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 [2021-10-07 16:04:14,083 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:04:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:14,084 INFO L82 PathProgramCache]: Analyzing trace with hash 411625501, now seen corresponding path program 1 times [2021-10-07 16:04:14,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:14,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940904879] [2021-10-07 16:04:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:14,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:14,086 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:04:14,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:04:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:14,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:04:14,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:14,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:14,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:14,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:14,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:14,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:14,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:14,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 19 [2021-10-07 16:04:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:04:14,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:04:14,835 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:04:14,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 73 [2021-10-07 16:04:14,839 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 73 treesize of output 69 [2021-10-07 16:04:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:04:16,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:16,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940904879] [2021-10-07 16:04:16,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940904879] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:04:16,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:04:16,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 16:04:16,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053784004] [2021-10-07 16:04:16,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:04:16,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:04:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:04:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:04:16,316 INFO L87 Difference]: Start difference. First operand 384 states and 982 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:28,248 INFO L93 Difference]: Finished difference Result 743 states and 1874 transitions. [2021-10-07 16:04:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 16:04:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 16:04:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:28,255 INFO L225 Difference]: With dead ends: 743 [2021-10-07 16:04:28,255 INFO L226 Difference]: Without dead ends: 720 [2021-10-07 16:04:28,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 8833.1ms TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:04:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-10-07 16:04:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 450. [2021-10-07 16:04:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 439 states have (on average 2.726651480637813) internal successors, (1197), 449 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1197 transitions. [2021-10-07 16:04:28,289 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1197 transitions. Word has length 9 [2021-10-07 16:04:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:28,289 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1197 transitions. [2021-10-07 16:04:28,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1197 transitions. [2021-10-07 16:04:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:04:28,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:28,291 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:04:28,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:04:28,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:04:28,503 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:04:28,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1745558403, now seen corresponding path program 1 times [2021-10-07 16:04:28,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:28,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86639524] [2021-10-07 16:04:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:28,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:28,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:28,506 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:04:28,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:04:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:28,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:04:28,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:04:28,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:04:29,182 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 35 treesize of output 31 [2021-10-07 16:04:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:04:29,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:29,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86639524] [2021-10-07 16:04:29,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86639524] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:04:29,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:04:29,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:04:29,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522509876] [2021-10-07 16:04:29,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:04:29,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:04:29,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:04:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:04:29,573 INFO L87 Difference]: Start difference. First operand 450 states and 1197 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:32,307 INFO L93 Difference]: Finished difference Result 848 states and 2053 transitions. [2021-10-07 16:04:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 16:04:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 16:04:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:32,313 INFO L225 Difference]: With dead ends: 848 [2021-10-07 16:04:32,313 INFO L226 Difference]: Without dead ends: 727 [2021-10-07 16:04:32,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1198.3ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:04:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-10-07 16:04:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 476. [2021-10-07 16:04:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 465 states have (on average 2.8408602150537634) internal successors, (1321), 475 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1321 transitions. [2021-10-07 16:04:32,333 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1321 transitions. Word has length 10 [2021-10-07 16:04:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:32,333 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1321 transitions. [2021-10-07 16:04:32,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1321 transitions. [2021-10-07 16:04:32,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:04:32,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:32,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:04:32,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:04:32,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:04:32,548 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:04:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash -118787888, now seen corresponding path program 1 times [2021-10-07 16:04:32,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:32,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940502109] [2021-10-07 16:04:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:32,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:32,550 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:04:32,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:04:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:32,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:04:32,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:32,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:32,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:33,022 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:04:33,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 16:04:33,120 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:04:33,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 16:04:33,382 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:04:33,383 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 32 treesize of output 34 [2021-10-07 16:04:33,405 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:04:33,406 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 31 treesize of output 31 [2021-10-07 16:04:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:04:34,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:04:34,987 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:04:34,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 62 [2021-10-07 16:04:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:04:37,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:37,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940502109] [2021-10-07 16:04:37,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940502109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:04:37,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:04:37,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:04:37,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262631835] [2021-10-07 16:04:37,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:04:37,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:04:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:04:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:04:37,466 INFO L87 Difference]: Start difference. First operand 476 states and 1321 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:48,777 INFO L93 Difference]: Finished difference Result 598 states and 1596 transitions. [2021-10-07 16:04:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 16:04:48,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 16:04:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:48,783 INFO L225 Difference]: With dead ends: 598 [2021-10-07 16:04:48,783 INFO L226 Difference]: Without dead ends: 588 [2021-10-07 16:04:48,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5426.7ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:04:48,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-10-07 16:04:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 528. [2021-10-07 16:04:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 517 states have (on average 2.851063829787234) internal successors, (1474), 527 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1474 transitions. [2021-10-07 16:04:48,802 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1474 transitions. Word has length 10 [2021-10-07 16:04:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:48,802 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1474 transitions. [2021-10-07 16:04:48,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1474 transitions. [2021-10-07 16:04:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:04:48,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:48,804 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:04:48,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 16:04:49,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:04:49,017 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:04:49,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:49,018 INFO L82 PathProgramCache]: Analyzing trace with hash -367372967, now seen corresponding path program 2 times [2021-10-07 16:04:49,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:49,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790222408] [2021-10-07 16:04:49,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:04:49,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:49,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:49,021 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:04:49,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:04:49,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:04:49,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:04:49,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:04:49,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:49,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:49,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:49,467 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:04:49,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 16:04:49,538 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:04:49,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 16:04:49,719 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:04:49,719 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 32 treesize of output 34 [2021-10-07 16:04:49,743 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:04:49,744 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 31 treesize of output 31 [2021-10-07 16:04:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 16:04:50,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:04:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 16:04:52,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:52,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790222408] [2021-10-07 16:04:52,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790222408] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:04:52,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:04:52,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:04:52,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986982993] [2021-10-07 16:04:52,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:04:52,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:04:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:04:52,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:04:52,890 INFO L87 Difference]: Start difference. First operand 528 states and 1474 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:53,195 INFO L93 Difference]: Finished difference Result 480 states and 1260 transitions. [2021-10-07 16:04:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:04:53,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 16:04:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:53,200 INFO L225 Difference]: With dead ends: 480 [2021-10-07 16:04:53,200 INFO L226 Difference]: Without dead ends: 463 [2021-10-07 16:04:53,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 435.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:04:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-10-07 16:04:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 300. [2021-10-07 16:04:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 2.642857142857143) internal successors, (777), 299 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 777 transitions. [2021-10-07 16:04:53,211 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 777 transitions. Word has length 10 [2021-10-07 16:04:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:53,211 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 777 transitions. [2021-10-07 16:04:53,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 777 transitions. [2021-10-07 16:04:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:04:53,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:53,212 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:04:53,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:04:53,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:04:53,423 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:04:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:53,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1265913472, now seen corresponding path program 2 times [2021-10-07 16:04:53,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:53,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660449588] [2021-10-07 16:04:53,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:04:53,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:53,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:53,427 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:04:53,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:04:53,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:04:53,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:04:53,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:04:53,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:53,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 16:04:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 16:04:53,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:04:53,835 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:04:53,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 62 [2021-10-07 16:04:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 16:04:54,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:54,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660449588] [2021-10-07 16:04:54,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660449588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:04:54,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:04:54,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:04:54,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284183435] [2021-10-07 16:04:54,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:04:54,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:04:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:04:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:04:54,976 INFO L87 Difference]: Start difference. First operand 300 states and 777 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:55,199 INFO L93 Difference]: Finished difference Result 280 states and 689 transitions. [2021-10-07 16:04:55,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:04:55,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:04:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:55,203 INFO L225 Difference]: With dead ends: 280 [2021-10-07 16:04:55,203 INFO L226 Difference]: Without dead ends: 266 [2021-10-07 16:04:55,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:04:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-07 16:04:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 132. [2021-10-07 16:04:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 129 states have (on average 2.147286821705426) internal successors, (277), 131 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 277 transitions. [2021-10-07 16:04:55,210 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 277 transitions. Word has length 11 [2021-10-07 16:04:55,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:55,210 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 277 transitions. [2021-10-07 16:04:55,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:04:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 277 transitions. [2021-10-07 16:04:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:04:55,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:55,211 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2021-10-07 16:04:55,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-07 16:04:55,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:04:55,424 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:04:55,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:55,424 INFO L82 PathProgramCache]: Analyzing trace with hash 36112137, now seen corresponding path program 1 times [2021-10-07 16:04:55,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:55,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025215539] [2021-10-07 16:04:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:55,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:55,426 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:04:55,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 16:04:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:55,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:04:55,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:55,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 16:04:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:04:56,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:05:00,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:00,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025215539] [2021-10-07 16:05:00,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025215539] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:05:00,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:05:00,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:05:00,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5747598] [2021-10-07 16:05:00,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:05:00,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:05:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:05:00,232 INFO L87 Difference]: Start difference. First operand 132 states and 277 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:09,485 WARN L207 SmtUtils]: Spent 6.98 s on a formula simplification that was a NOOP. DAG size: 113 [2021-10-07 16:05:33,436 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-07 16:05:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:05:48,772 INFO L93 Difference]: Finished difference Result 1593 states and 3630 transitions. [2021-10-07 16:05:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 16:05:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:05:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:05:48,782 INFO L225 Difference]: With dead ends: 1593 [2021-10-07 16:05:48,782 INFO L226 Difference]: Without dead ends: 1593 [2021-10-07 16:05:48,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 27752.3ms TimeCoverageRelationStatistics Valid=339, Invalid=591, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:05:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-10-07 16:05:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 165. [2021-10-07 16:05:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 2.049382716049383) internal successors, (332), 164 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 332 transitions. [2021-10-07 16:05:48,797 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 332 transitions. Word has length 12 [2021-10-07 16:05:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:05:48,797 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 332 transitions. [2021-10-07 16:05:48,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 332 transitions. [2021-10-07 16:05:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:05:48,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:05:48,798 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-07 16:05:48,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 16:05:49,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:05:49,011 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:05:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:05:49,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1101809611, now seen corresponding path program 3 times [2021-10-07 16:05:49,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:05:49,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252545607] [2021-10-07 16:05:49,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:05:49,014 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:05:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:05:49,016 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:05:49,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 16:05:49,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 16:05:49,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:05:49,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:05:49,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:05:49,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:05:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:05:49,684 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:05:49,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:05:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:05:50,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:05:57,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:57,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252545607] [2021-10-07 16:05:57,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252545607] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:05:57,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:05:57,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 16:05:57,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956531580] [2021-10-07 16:05:57,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 16:05:57,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 16:05:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:05:57,422 INFO L87 Difference]: Start difference. First operand 165 states and 332 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:06:10,425 WARN L207 SmtUtils]: Spent 7.89 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 16:06:18,845 WARN L207 SmtUtils]: Spent 7.34 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 16:06:53,413 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 16:07:00,010 WARN L207 SmtUtils]: Spent 5.50 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-07 16:07:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:22,636 INFO L93 Difference]: Finished difference Result 1441 states and 3274 transitions. [2021-10-07 16:07:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:07:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:07:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:22,645 INFO L225 Difference]: With dead ends: 1441 [2021-10-07 16:07:22,646 INFO L226 Difference]: Without dead ends: 1441 [2021-10-07 16:07:22,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 55747.6ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:07:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-10-07 16:07:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 181. [2021-10-07 16:07:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 178 states have (on average 2.044943820224719) internal successors, (364), 180 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 364 transitions. [2021-10-07 16:07:22,661 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 364 transitions. Word has length 16 [2021-10-07 16:07:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:22,661 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 364 transitions. [2021-10-07 16:07:22,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 364 transitions. [2021-10-07 16:07:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:07:22,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:22,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:22,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:22,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:22,864 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1178439461, now seen corresponding path program 1 times [2021-10-07 16:07:22,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:22,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851363884] [2021-10-07 16:07:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:07:22,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:22,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:22,868 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:22,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 16:07:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:23,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:07:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:23,315 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:07:23,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 133 treesize of output 28 [2021-10-07 16:07:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:07:23,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:23,653 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:07:23,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 135 treesize of output 30 [2021-10-07 16:07:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:07:24,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:24,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851363884] [2021-10-07 16:07:24,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851363884] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:24,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:24,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:07:24,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083813429] [2021-10-07 16:07:24,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:07:24,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:07:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:07:24,018 INFO L87 Difference]: Start difference. First operand 181 states and 364 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:24,770 INFO L93 Difference]: Finished difference Result 294 states and 627 transitions. [2021-10-07 16:07:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:07:24,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:07:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:24,772 INFO L225 Difference]: With dead ends: 294 [2021-10-07 16:07:24,772 INFO L226 Difference]: Without dead ends: 246 [2021-10-07 16:07:24,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 773.1ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:07:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-07 16:07:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 202. [2021-10-07 16:07:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 199 states have (on average 2.1105527638190953) internal successors, (420), 201 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 420 transitions. [2021-10-07 16:07:24,778 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 420 transitions. Word has length 18 [2021-10-07 16:07:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:24,778 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 420 transitions. [2021-10-07 16:07:24,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 420 transitions. [2021-10-07 16:07:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:24,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:24,779 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:24,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:24,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:24,981 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:24,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1518917854, now seen corresponding path program 2 times [2021-10-07 16:07:24,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:24,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684825715] [2021-10-07 16:07:24,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:07:24,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:24,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:24,984 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:24,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 16:07:25,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:07:25,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:25,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:07:25,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:25,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:25,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:25,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684825715] [2021-10-07 16:07:25,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684825715] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:07:25,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:07:25,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-10-07 16:07:25,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108527097] [2021-10-07 16:07:25,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:07:25,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:07:25,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:07:25,639 INFO L87 Difference]: Start difference. First operand 202 states and 420 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:25,906 INFO L93 Difference]: Finished difference Result 322 states and 694 transitions. [2021-10-07 16:07:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:07:25,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:25,911 INFO L225 Difference]: With dead ends: 322 [2021-10-07 16:07:25,911 INFO L226 Difference]: Without dead ends: 312 [2021-10-07 16:07:25,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:07:25,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-07 16:07:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 214. [2021-10-07 16:07:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 211 states have (on average 2.1516587677725116) internal successors, (454), 213 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 454 transitions. [2021-10-07 16:07:25,919 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 454 transitions. Word has length 19 [2021-10-07 16:07:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:25,919 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 454 transitions. [2021-10-07 16:07:25,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 454 transitions. [2021-10-07 16:07:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:25,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:25,923 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:25,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-07 16:07:26,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:26,137 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:26,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:26,138 INFO L82 PathProgramCache]: Analyzing trace with hash -678508462, now seen corresponding path program 3 times [2021-10-07 16:07:26,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:26,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078058791] [2021-10-07 16:07:26,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:07:26,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:26,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:26,140 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:26,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 16:07:26,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:07:26,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:26,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:07:26,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:26,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:26,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:26,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078058791] [2021-10-07 16:07:26,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078058791] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:07:26,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:07:26,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-10-07 16:07:26,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223318012] [2021-10-07 16:07:26,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:07:26,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:07:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:07:26,800 INFO L87 Difference]: Start difference. First operand 214 states and 454 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:27,046 INFO L93 Difference]: Finished difference Result 290 states and 623 transitions. [2021-10-07 16:07:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:07:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:27,049 INFO L225 Difference]: With dead ends: 290 [2021-10-07 16:07:27,049 INFO L226 Difference]: Without dead ends: 286 [2021-10-07 16:07:27,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:07:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-10-07 16:07:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 218. [2021-10-07 16:07:27,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 215 states have (on average 2.186046511627907) internal successors, (470), 217 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 470 transitions. [2021-10-07 16:07:27,054 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 470 transitions. Word has length 19 [2021-10-07 16:07:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:27,054 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 470 transitions. [2021-10-07 16:07:27,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 470 transitions. [2021-10-07 16:07:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:27,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:27,055 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:27,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:27,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:27,258 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1042213828, now seen corresponding path program 4 times [2021-10-07 16:07:27,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:27,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271552255] [2021-10-07 16:07:27,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:07:27,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:27,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:27,261 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:27,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 16:07:27,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:07:27,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:27,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:07:27,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:27,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:27,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:27,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271552255] [2021-10-07 16:07:27,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271552255] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:27,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-07 16:07:27,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441688092] [2021-10-07 16:07:27,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:07:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:07:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:07:27,756 INFO L87 Difference]: Start difference. First operand 218 states and 470 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:28,292 INFO L93 Difference]: Finished difference Result 300 states and 643 transitions. [2021-10-07 16:07:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:07:28,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:28,295 INFO L225 Difference]: With dead ends: 300 [2021-10-07 16:07:28,295 INFO L226 Difference]: Without dead ends: 288 [2021-10-07 16:07:28,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 172.7ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:07:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-07 16:07:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 228. [2021-10-07 16:07:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 2.1866666666666665) internal successors, (492), 227 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 492 transitions. [2021-10-07 16:07:28,302 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 492 transitions. Word has length 19 [2021-10-07 16:07:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:28,302 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 492 transitions. [2021-10-07 16:07:28,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 492 transitions. [2021-10-07 16:07:28,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:28,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:28,304 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:28,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:28,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:28,517 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:28,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1687561634, now seen corresponding path program 5 times [2021-10-07 16:07:28,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:28,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868416336] [2021-10-07 16:07:28,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:07:28,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:28,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:28,521 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:28,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 16:07:28,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:07:28,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:07:28,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:28,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:29,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:29,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868416336] [2021-10-07 16:07:29,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868416336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:29,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:29,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-07 16:07:29,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212613106] [2021-10-07 16:07:29,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:07:29,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:29,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:07:29,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:07:29,028 INFO L87 Difference]: Start difference. First operand 228 states and 492 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:29,294 INFO L93 Difference]: Finished difference Result 290 states and 614 transitions. [2021-10-07 16:07:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:07:29,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:29,296 INFO L225 Difference]: With dead ends: 290 [2021-10-07 16:07:29,296 INFO L226 Difference]: Without dead ends: 286 [2021-10-07 16:07:29,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:07:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-10-07 16:07:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 236. [2021-10-07 16:07:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 2.223175965665236) internal successors, (518), 235 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 518 transitions. [2021-10-07 16:07:29,303 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 518 transitions. Word has length 19 [2021-10-07 16:07:29,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:29,304 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 518 transitions. [2021-10-07 16:07:29,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:29,304 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 518 transitions. [2021-10-07 16:07:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:29,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:29,305 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:29,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:29,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:29,519 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:29,520 INFO L82 PathProgramCache]: Analyzing trace with hash -886683372, now seen corresponding path program 6 times [2021-10-07 16:07:29,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:29,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435976858] [2021-10-07 16:07:29,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:07:29,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:29,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:29,522 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:29,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 16:07:29,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 16:07:29,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:29,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:07:29,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:29,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:30,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:30,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435976858] [2021-10-07 16:07:30,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435976858] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:30,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:30,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-07 16:07:30,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480415350] [2021-10-07 16:07:30,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:07:30,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:07:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:07:30,066 INFO L87 Difference]: Start difference. First operand 236 states and 518 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:30,530 INFO L93 Difference]: Finished difference Result 294 states and 615 transitions. [2021-10-07 16:07:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:07:30,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:30,533 INFO L225 Difference]: With dead ends: 294 [2021-10-07 16:07:30,533 INFO L226 Difference]: Without dead ends: 288 [2021-10-07 16:07:30,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 196.1ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:07:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-07 16:07:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 234. [2021-10-07 16:07:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 231 states have (on average 2.1948051948051948) internal successors, (507), 233 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 507 transitions. [2021-10-07 16:07:30,539 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 507 transitions. Word has length 19 [2021-10-07 16:07:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:30,539 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 507 transitions. [2021-10-07 16:07:30,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 507 transitions. [2021-10-07 16:07:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:30,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:30,541 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:30,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:30,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:30,747 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:30,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1513440256, now seen corresponding path program 7 times [2021-10-07 16:07:30,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:30,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023338203] [2021-10-07 16:07:30,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:07:30,749 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:30,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:30,751 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:30,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 16:07:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:31,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:07:31,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:31,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:31,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:31,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023338203] [2021-10-07 16:07:31,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023338203] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:31,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:31,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-07 16:07:31,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627143360] [2021-10-07 16:07:31,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 16:07:31,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:31,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 16:07:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:07:31,259 INFO L87 Difference]: Start difference. First operand 234 states and 507 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:31,498 INFO L93 Difference]: Finished difference Result 260 states and 551 transitions. [2021-10-07 16:07:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:07:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:31,501 INFO L225 Difference]: With dead ends: 260 [2021-10-07 16:07:31,501 INFO L226 Difference]: Without dead ends: 256 [2021-10-07 16:07:31,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 136.0ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:07:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-07 16:07:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 234. [2021-10-07 16:07:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 231 states have (on average 2.1774891774891776) internal successors, (503), 233 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 503 transitions. [2021-10-07 16:07:31,506 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 503 transitions. Word has length 19 [2021-10-07 16:07:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:31,507 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 503 transitions. [2021-10-07 16:07:31,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 503 transitions. [2021-10-07 16:07:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:31,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:31,508 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:31,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:31,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:31,722 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1189933935, now seen corresponding path program 1 times [2021-10-07 16:07:31,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:31,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261409566] [2021-10-07 16:07:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:07:31,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:31,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:31,725 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:31,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 16:07:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:32,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:07:32,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:32,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:32,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:32,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261409566] [2021-10-07 16:07:32,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261409566] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:32,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:32,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 16:07:32,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563569652] [2021-10-07 16:07:32,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:07:32,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:07:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:07:32,332 INFO L87 Difference]: Start difference. First operand 234 states and 503 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:32,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:32,965 INFO L93 Difference]: Finished difference Result 342 states and 751 transitions. [2021-10-07 16:07:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:07:32,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:32,968 INFO L225 Difference]: With dead ends: 342 [2021-10-07 16:07:32,968 INFO L226 Difference]: Without dead ends: 336 [2021-10-07 16:07:32,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:07:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-07 16:07:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 248. [2021-10-07 16:07:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 245 states have (on average 2.236734693877551) internal successors, (548), 247 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 548 transitions. [2021-10-07 16:07:32,976 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 548 transitions. Word has length 19 [2021-10-07 16:07:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:32,977 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 548 transitions. [2021-10-07 16:07:32,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 548 transitions. [2021-10-07 16:07:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:32,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:32,978 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:32,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:33,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:33,192 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:33,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1176136161, now seen corresponding path program 2 times [2021-10-07 16:07:33,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:33,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912429205] [2021-10-07 16:07:33,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:07:33,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:33,195 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:33,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 16:07:33,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:07:33,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:33,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:07:33,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:33,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:33,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:33,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912429205] [2021-10-07 16:07:33,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912429205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:33,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:33,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 16:07:33,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484962778] [2021-10-07 16:07:33,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:07:33,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:07:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:07:33,871 INFO L87 Difference]: Start difference. First operand 248 states and 548 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:34,458 INFO L93 Difference]: Finished difference Result 350 states and 773 transitions. [2021-10-07 16:07:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:07:34,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:34,462 INFO L225 Difference]: With dead ends: 350 [2021-10-07 16:07:34,462 INFO L226 Difference]: Without dead ends: 346 [2021-10-07 16:07:34,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 291.3ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:07:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-10-07 16:07:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 248. [2021-10-07 16:07:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 245 states have (on average 2.253061224489796) internal successors, (552), 247 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 552 transitions. [2021-10-07 16:07:34,469 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 552 transitions. Word has length 19 [2021-10-07 16:07:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:34,469 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 552 transitions. [2021-10-07 16:07:34,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 552 transitions. [2021-10-07 16:07:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:34,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:34,471 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:34,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:34,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:34,673 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:34,674 INFO L82 PathProgramCache]: Analyzing trace with hash 494077199, now seen corresponding path program 3 times [2021-10-07 16:07:34,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:34,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035466648] [2021-10-07 16:07:34,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:07:34,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:34,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:34,677 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:34,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 16:07:35,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:07:35,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:35,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:07:35,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:35,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:35,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:35,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035466648] [2021-10-07 16:07:35,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035466648] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:35,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:35,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 16:07:35,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58360890] [2021-10-07 16:07:35,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:07:35,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:07:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:07:35,347 INFO L87 Difference]: Start difference. First operand 248 states and 552 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:35,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:35,931 INFO L93 Difference]: Finished difference Result 348 states and 770 transitions. [2021-10-07 16:07:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:07:35,932 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:07:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:35,933 INFO L225 Difference]: With dead ends: 348 [2021-10-07 16:07:35,933 INFO L226 Difference]: Without dead ends: 338 [2021-10-07 16:07:35,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 296.2ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:07:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-07 16:07:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 242. [2021-10-07 16:07:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 239 states have (on average 2.2384937238493725) internal successors, (535), 241 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 535 transitions. [2021-10-07 16:07:35,941 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 535 transitions. Word has length 19 [2021-10-07 16:07:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:35,941 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 535 transitions. [2021-10-07 16:07:35,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:35,941 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 535 transitions. [2021-10-07 16:07:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:07:35,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:35,942 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:35,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:36,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:36,147 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:36,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1296167298, now seen corresponding path program 8 times [2021-10-07 16:07:36,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:36,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853581045] [2021-10-07 16:07:36,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:07:36,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:36,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:36,152 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:36,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 16:07:36,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:07:36,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:36,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:07:36,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:36,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:37,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:37,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853581045] [2021-10-07 16:07:37,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853581045] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:37,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:37,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-07 16:07:37,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946663652] [2021-10-07 16:07:37,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:07:37,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:07:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:07:37,055 INFO L87 Difference]: Start difference. First operand 242 states and 535 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:38,027 INFO L93 Difference]: Finished difference Result 448 states and 1024 transitions. [2021-10-07 16:07:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 16:07:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:07:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:38,032 INFO L225 Difference]: With dead ends: 448 [2021-10-07 16:07:38,032 INFO L226 Difference]: Without dead ends: 434 [2021-10-07 16:07:38,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 614.9ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:07:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-10-07 16:07:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 272. [2021-10-07 16:07:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 269 states have (on average 2.349442379182156) internal successors, (632), 271 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 632 transitions. [2021-10-07 16:07:38,041 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 632 transitions. Word has length 20 [2021-10-07 16:07:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:38,041 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 632 transitions. [2021-10-07 16:07:38,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 632 transitions. [2021-10-07 16:07:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:07:38,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:38,042 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:38,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:38,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:38,256 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:38,257 INFO L82 PathProgramCache]: Analyzing trace with hash -455757906, now seen corresponding path program 9 times [2021-10-07 16:07:38,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:38,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525660462] [2021-10-07 16:07:38,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:07:38,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:38,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:38,260 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:38,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 16:07:38,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:07:38,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:38,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:07:38,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:38,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:39,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:39,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525660462] [2021-10-07 16:07:39,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525660462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:39,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:39,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-07 16:07:39,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032400837] [2021-10-07 16:07:39,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:07:39,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:07:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:07:39,222 INFO L87 Difference]: Start difference. First operand 272 states and 632 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:40,795 INFO L93 Difference]: Finished difference Result 474 states and 1106 transitions. [2021-10-07 16:07:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:07:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:07:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:40,799 INFO L225 Difference]: With dead ends: 474 [2021-10-07 16:07:40,799 INFO L226 Difference]: Without dead ends: 466 [2021-10-07 16:07:40,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1133.7ms TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:07:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-10-07 16:07:40,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 294. [2021-10-07 16:07:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 291 states have (on average 2.443298969072165) internal successors, (711), 293 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 711 transitions. [2021-10-07 16:07:40,809 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 711 transitions. Word has length 20 [2021-10-07 16:07:40,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:40,809 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 711 transitions. [2021-10-07 16:07:40,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:40,809 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 711 transitions. [2021-10-07 16:07:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:07:40,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:40,810 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:40,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:41,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:41,025 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash -172870530, now seen corresponding path program 10 times [2021-10-07 16:07:41,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:41,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320803327] [2021-10-07 16:07:41,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:07:41,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:41,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:41,029 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:41,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 16:07:41,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:07:41,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:41,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:07:41,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:41,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:41,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:41,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320803327] [2021-10-07 16:07:41,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320803327] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:41,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:41,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 16:07:41,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811406295] [2021-10-07 16:07:41,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:07:41,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:07:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:07:41,795 INFO L87 Difference]: Start difference. First operand 294 states and 711 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:42,902 INFO L93 Difference]: Finished difference Result 468 states and 1108 transitions. [2021-10-07 16:07:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 16:07:42,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:07:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:42,905 INFO L225 Difference]: With dead ends: 468 [2021-10-07 16:07:42,905 INFO L226 Difference]: Without dead ends: 460 [2021-10-07 16:07:42,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 621.9ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:07:42,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-07 16:07:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 316. [2021-10-07 16:07:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 2.488817891373802) internal successors, (779), 315 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 779 transitions. [2021-10-07 16:07:42,913 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 779 transitions. Word has length 20 [2021-10-07 16:07:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:42,913 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 779 transitions. [2021-10-07 16:07:42,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 779 transitions. [2021-10-07 16:07:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:07:42,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:42,915 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:42,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:43,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:07:43,128 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:07:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1230451322, now seen corresponding path program 1 times [2021-10-07 16:07:43,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:43,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807851704] [2021-10-07 16:07:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:07:43,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:43,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:43,132 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:07:43,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 16:07:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:43,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:07:43,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:45,129 INFO L354 Elim1Store]: treesize reduction 114, result has 65.6 percent of original size [2021-10-07 16:07:45,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 313 treesize of output 290 [2021-10-07 16:07:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 16:07:45,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:52,075 INFO L354 Elim1Store]: treesize reduction 153, result has 62.3 percent of original size [2021-10-07 16:07:52,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 418 treesize of output 331 [2021-10-07 16:07:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:07:56,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:56,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807851704] [2021-10-07 16:07:56,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807851704] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:56,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:56,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 4 [2021-10-07 16:07:56,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715974174] [2021-10-07 16:07:56,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:07:56,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:56,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:07:56,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=16, Unknown=4, NotChecked=0, Total=30 [2021-10-07 16:07:56,853 INFO L87 Difference]: Start difference. First operand 316 states and 779 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:08:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:08:12,069 INFO L93 Difference]: Finished difference Result 377 states and 929 transitions. [2021-10-07 16:08:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:08:12,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-07 16:08:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:08:12,072 INFO L225 Difference]: With dead ends: 377 [2021-10-07 16:08:12,072 INFO L226 Difference]: Without dead ends: 368 [2021-10-07 16:08:12,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14284.2ms TimeCoverageRelationStatistics Valid=14, Invalid=23, Unknown=5, NotChecked=0, Total=42 [2021-10-07 16:08:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-07 16:08:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 338. [2021-10-07 16:08:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 335 states have (on average 2.5253731343283583) internal successors, (846), 337 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:08:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 846 transitions. [2021-10-07 16:08:12,080 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 846 transitions. Word has length 20 [2021-10-07 16:08:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:08:12,080 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 846 transitions. [2021-10-07 16:08:12,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:08:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 846 transitions. [2021-10-07 16:08:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:08:12,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:08:12,082 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:08:12,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 16:08:12,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:08:12,296 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 52 more)] === [2021-10-07 16:08:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:08:12,296 INFO L82 PathProgramCache]: Analyzing trace with hash -877559745, now seen corresponding path program 2 times [2021-10-07 16:08:12,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:08:12,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008893820] [2021-10-07 16:08:12,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:08:12,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:08:12,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:08:12,298 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:08:12,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 16:08:12,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:08:12,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:08:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:08:12,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:48,761 WARN L207 SmtUtils]: Spent 4.59 m on a formula simplification. DAG size of input: 371 DAG size of output: 149 [2021-10-07 16:12:48,763 INFO L354 Elim1Store]: treesize reduction 1498, result has 24.9 percent of original size [2021-10-07 16:12:48,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 224 treesize of output 587 [2021-10-07 16:15:37,960 WARN L228 Executor]: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-07 16:15:37,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-07 16:15:37,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:15:37,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008893820] [2021-10-07 16:15:37,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-07 16:15:37,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1364282717] [2021-10-07 16:15:37,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:15:37,963 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:15:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:15:37,964 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 16:15:37,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-10-07 16:15:38,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 16:15:38,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050416130] [2021-10-07 16:15:38,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:15:38,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:15:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:15:38,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 1 [2021-10-07 16:15:38,904 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 16:15:38,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-07 16:15:39,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:15:39,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:15:39,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 16:15:39,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:15:39,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-07 16:15:39,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:15:39,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-07 16:15:39,420 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-07 16:15:39,420 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-07 16:15:39,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:15:39,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:15:39,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:15:39,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:15:39,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:15:39,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4REQUIRES_VIOLATION [2021-10-07 16:15:39,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5REQUIRES_VIOLATION [2021-10-07 16:15:39,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6REQUIRES_VIOLATION [2021-10-07 16:15:39,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7REQUIRES_VIOLATION [2021-10-07 16:15:39,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8REQUIRES_VIOLATION [2021-10-07 16:15:39,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9REQUIRES_VIOLATION [2021-10-07 16:15:39,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:15:39,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:15:39,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:15:39,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:15:39,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATION [2021-10-07 16:15:39,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATION [2021-10-07 16:15:39,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6REQUIRES_VIOLATION [2021-10-07 16:15:39,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7REQUIRES_VIOLATION [2021-10-07 16:15:39,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8REQUIRES_VIOLATION [2021-10-07 16:15:39,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9REQUIRES_VIOLATION [2021-10-07 16:15:39,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:15:39,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:15:39,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:15:39,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:15:39,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:15:39,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:15:39,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:15:39,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:15:39,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:15:39,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:15:39,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 16:15:39,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 16:15:39,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:15:39,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:15:39,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:15:39,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:15:39,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:15:39,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:15:39,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:15:39,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4REQUIRES_VIOLATION [2021-10-07 16:15:39,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5REQUIRES_VIOLATION [2021-10-07 16:15:39,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6REQUIRES_VIOLATION [2021-10-07 16:15:39,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7REQUIRES_VIOLATION [2021-10-07 16:15:39,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8REQUIRES_VIOLATION [2021-10-07 16:15:39,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9REQUIRES_VIOLATION [2021-10-07 16:15:39,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:15:39,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8REQUIRES_VIOLATION [2021-10-07 16:15:39,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9REQUIRES_VIOLATION [2021-10-07 16:15:39,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 16:15:39,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-07 16:15:39,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:15:39,842 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:15:39,842 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:15:39,844 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-07 16:15:39,846 INFO L168 Benchmark]: Toolchain (without parser) took 792194.17 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 129.9 MB in the beginning and 107.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 59.8 MB. Max. memory is 8.0 GB. [2021-10-07 16:15:39,846 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:15:39,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.94 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 116.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:15:39,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 114.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:15:39,847 INFO L168 Benchmark]: Boogie Preprocessor took 46.36 ms. Allocated memory is still 155.2 MB. Free memory was 114.3 MB in the beginning and 112.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:15:39,847 INFO L168 Benchmark]: RCFGBuilder took 2348.02 ms. Allocated memory is still 155.2 MB. Free memory was 112.4 MB in the beginning and 78.4 MB in the end (delta: 34.0 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:15:39,848 INFO L168 Benchmark]: TraceAbstraction took 789334.97 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 77.9 MB in the beginning and 107.8 MB in the end (delta: -29.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2021-10-07 16:15:39,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 386.94 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 116.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 114.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.36 ms. Allocated memory is still 155.2 MB. Free memory was 114.3 MB in the beginning and 112.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2348.02 ms. Allocated memory is still 155.2 MB. Free memory was 112.4 MB in the beginning and 78.4 MB in the end (delta: 34.0 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 789334.97 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 77.9 MB in the beginning and 107.8 MB in the end (delta: -29.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30340.4ms, 172 PlacesBefore, 58 PlacesAfterwards, 178 TransitionsBefore, 55 TransitionsAfterwards, 1720 CoEnabledTransitionPairs, 7 FixpointIterations, 110 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 186 TotalNumberOfCompositions, 2458 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2223, positive: 2203, positive conditional: 0, positive unconditional: 2203, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 723, positive: 715, positive conditional: 0, positive unconditional: 715, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 723, positive: 711, positive conditional: 0, positive unconditional: 711, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2544, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 496, negative conditional: 0, negative unconditional: 496, unknown: 2016, unknown conditional: 0, unknown unconditional: 2016] ], Cache Queries: [ total: 2223, positive: 1488, positive conditional: 0, positive unconditional: 1488, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 723, unknown conditional: 0, unknown unconditional: 723] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - 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 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...