/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-bad-counter-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 20:43:19,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 20:43:19,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 20:43:19,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 20:43:19,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 20:43:19,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 20:43:19,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 20:43:19,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 20:43:19,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 20:43:19,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 20:43:19,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 20:43:19,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 20:43:19,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 20:43:19,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 20:43:19,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 20:43:19,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 20:43:19,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 20:43:19,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 20:43:19,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 20:43:19,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 20:43:19,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 20:43:19,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 20:43:19,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 20:43:19,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 20:43:19,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 20:43:19,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 20:43:19,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 20:43:19,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 20:43:19,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 20:43:19,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 20:43:19,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 20:43:19,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 20:43:19,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 20:43:19,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 20:43:19,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 20:43:19,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 20:43:19,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 20:43:19,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 20:43:19,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 20:43:19,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 20:43:19,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 20:43:19,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 20:43:19,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 20:43:19,317 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 20:43:19,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 20:43:19,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 20:43:19,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 20:43:19,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 20:43:19,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 20:43:19,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 20:43:19,321 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 20:43:19,321 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 20:43:19,322 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 20:43:19,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 20:43:19,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 20:43:19,323 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 20:43:19,323 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 20:43:19,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 20:43:19,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 20:43:19,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 20:43:19,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 20:43:19,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 20:43:19,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:43:19,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 20:43:19,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 20:43:19,325 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 20:43:19,325 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 20:43:19,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 20:43:19,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 20:43:19,326 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 20:43:19,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 20:43:19,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 20:43:19,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 20:43:19,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 20:43:19,731 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 20:43:19,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-10-13 20:43:19,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0cdb6ec2/0588e9ab1996427c954af4366d84b973/FLAG475b8ada3 [2021-10-13 20:43:20,513 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 20:43:20,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-10-13 20:43:20,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0cdb6ec2/0588e9ab1996427c954af4366d84b973/FLAG475b8ada3 [2021-10-13 20:43:20,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0cdb6ec2/0588e9ab1996427c954af4366d84b973 [2021-10-13 20:43:20,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 20:43:20,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 20:43:20,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 20:43:20,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 20:43:20,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 20:43:20,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:43:20" (1/1) ... [2021-10-13 20:43:20,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677b26e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:20, skipping insertion in model container [2021-10-13 20:43:20,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:43:20" (1/1) ... [2021-10-13 20:43:20,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 20:43:20,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:43:21,161 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-bad-counter-queue.wvr.c[2150,2163] [2021-10-13 20:43:21,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:43:21,192 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 20:43:21,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:43:21,209 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-bad-counter-queue.wvr.c[2150,2163] [2021-10-13 20:43:21,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:43:21,225 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 20:43:21,250 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-bad-counter-queue.wvr.c[2150,2163] [2021-10-13 20:43:21,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:43:21,280 INFO L208 MainTranslator]: Completed translation [2021-10-13 20:43:21,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21 WrapperNode [2021-10-13 20:43:21,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 20:43:21,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 20:43:21,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 20:43:21,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 20:43:21,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 20:43:21,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 20:43:21,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 20:43:21,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 20:43:21,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 20:43:21,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 20:43:21,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 20:43:21,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 20:43:21,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (1/1) ... [2021-10-13 20:43:21,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:43:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:43:21,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 20:43:21,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 20:43:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 20:43:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 20:43:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 20:43:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 20:43:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 20:43:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 20:43:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 20:43:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 20:43:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 20:43:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 20:43:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 20:43:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 20:43:21,528 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 20:43:22,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 20:43:22,247 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-13 20:43:22,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:43:22 BoogieIcfgContainer [2021-10-13 20:43:22,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 20:43:22,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 20:43:22,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 20:43:22,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 20:43:22,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:43:20" (1/3) ... [2021-10-13 20:43:22,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e932365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:43:22, skipping insertion in model container [2021-10-13 20:43:22,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:43:21" (2/3) ... [2021-10-13 20:43:22,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e932365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:43:22, skipping insertion in model container [2021-10-13 20:43:22,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:43:22" (3/3) ... [2021-10-13 20:43:22,266 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2021-10-13 20:43:22,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 20:43:22,274 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-13 20:43:22,274 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 20:43:22,350 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,351 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,351 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,352 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,352 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,352 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,353 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,355 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,355 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,359 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,359 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,360 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,360 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,360 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,361 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,361 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,361 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,361 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,362 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,362 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,363 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,363 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,363 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,363 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,363 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,364 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,364 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,364 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,365 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,365 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,366 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,366 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,366 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,366 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,367 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,367 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,367 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,367 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,368 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,368 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,371 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,371 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,372 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,372 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,373 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,373 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,374 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,374 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,374 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,375 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,376 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,376 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,376 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,376 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,377 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,377 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,379 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,380 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,380 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,380 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,380 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,383 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,383 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,384 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,384 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,384 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,384 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,385 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,385 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,385 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,385 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,385 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,386 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,386 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,386 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,386 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,387 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,387 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,387 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,387 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,388 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,388 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,388 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,388 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,389 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,389 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,390 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,390 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,393 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,393 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,394 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,394 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,398 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,399 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,400 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,401 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,401 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,406 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,406 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,408 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,408 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,408 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,408 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,408 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,409 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,409 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:43:22,416 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 20:43:22,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 20:43:22,490 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 20:43:22,490 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-13 20:43:22,510 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 20:43:22,524 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 165 transitions, 346 flow [2021-10-13 20:43:22,528 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 165 transitions, 346 flow [2021-10-13 20:43:22,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 165 transitions, 346 flow [2021-10-13 20:43:22,614 INFO L129 PetriNetUnfolder]: 13/163 cut-off events. [2021-10-13 20:43:22,614 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 20:43:22,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 13/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 275 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2021-10-13 20:43:22,629 INFO L116 LiptonReduction]: Number of co-enabled transitions 3876 [2021-10-13 20:43:40,207 INFO L131 LiptonReduction]: Checked pairs total: 4525 [2021-10-13 20:43:40,207 INFO L133 LiptonReduction]: Total number of compositions: 186 [2021-10-13 20:43:40,218 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 38 transitions, 92 flow [2021-10-13 20:43:40,244 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 230 states, 186 states have (on average 3.1021505376344085) internal successors, (577), 229 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 186 states have (on average 3.1021505376344085) internal successors, (577), 229 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:43:40,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:40,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:43:40,255 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:40,261 INFO L82 PathProgramCache]: Analyzing trace with hash 21454, now seen corresponding path program 1 times [2021-10-13 20:43:40,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:40,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295713017] [2021-10-13 20:43:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:40,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:40,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:40,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:40,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 20:43:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:40,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:43:40,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:40,484 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:43:40,487 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 [2021-10-13 20:43:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:40,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:40,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:40,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295713017] [2021-10-13 20:43:40,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295713017] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:40,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:40,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:43:40,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795288887] [2021-10-13 20:43:40,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:43:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:43:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:43:40,621 INFO L87 Difference]: Start difference. First operand has 230 states, 186 states have (on average 3.1021505376344085) internal successors, (577), 229 states have internal predecessors, (577), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:40,745 INFO L93 Difference]: Finished difference Result 228 states and 575 transitions. [2021-10-13 20:43:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:43:40,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 20:43:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:40,766 INFO L225 Difference]: With dead ends: 228 [2021-10-13 20:43:40,766 INFO L226 Difference]: Without dead ends: 228 [2021-10-13 20:43:40,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:43:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-13 20:43:40,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-13 20:43:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 186 states have (on average 3.0913978494623655) internal successors, (575), 227 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 575 transitions. [2021-10-13 20:43:40,858 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 575 transitions. Word has length 2 [2021-10-13 20:43:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:40,863 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 575 transitions. [2021-10-13 20:43:40,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 575 transitions. [2021-10-13 20:43:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:43:40,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:40,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:43:40,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 20:43:41,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:41,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash 21518, now seen corresponding path program 1 times [2021-10-13 20:43:41,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:41,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066177141] [2021-10-13 20:43:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:41,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:41,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:41,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:41,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 20:43:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:41,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:43:41,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:41,199 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:43:41,200 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 24 treesize of output 31 [2021-10-13 20:43:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:41,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:41,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:41,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066177141] [2021-10-13 20:43:41,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066177141] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:41,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:41,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:43:41,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893225362] [2021-10-13 20:43:41,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:43:41,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:43:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:41,267 INFO L87 Difference]: Start difference. First operand 228 states and 575 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:41,361 INFO L93 Difference]: Finished difference Result 185 states and 448 transitions. [2021-10-13 20:43:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:43:41,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 20:43:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:41,365 INFO L225 Difference]: With dead ends: 185 [2021-10-13 20:43:41,365 INFO L226 Difference]: Without dead ends: 185 [2021-10-13 20:43:41,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:41,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-13 20:43:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-10-13 20:43:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 153 states have (on average 2.9281045751633985) internal successors, (448), 184 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 448 transitions. [2021-10-13 20:43:41,391 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 448 transitions. Word has length 2 [2021-10-13 20:43:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:41,391 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 448 transitions. [2021-10-13 20:43:41,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 448 transitions. [2021-10-13 20:43:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:43:41,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:41,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:43:41,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 20:43:41,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:41,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash 21456, now seen corresponding path program 1 times [2021-10-13 20:43:41,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:41,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992209472] [2021-10-13 20:43:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:41,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:41,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:41,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 20:43:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:41,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:43:41,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:41,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:41,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:41,891 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:43:41,892 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 [2021-10-13 20:43:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:41,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:42,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:42,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992209472] [2021-10-13 20:43:42,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992209472] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:42,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:42,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:43:42,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678202789] [2021-10-13 20:43:42,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:43:42,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:43:42,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:42,088 INFO L87 Difference]: Start difference. First operand 185 states and 448 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:42,430 INFO L93 Difference]: Finished difference Result 369 states and 897 transitions. [2021-10-13 20:43:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:43:42,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 20:43:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:42,436 INFO L225 Difference]: With dead ends: 369 [2021-10-13 20:43:42,437 INFO L226 Difference]: Without dead ends: 369 [2021-10-13 20:43:42,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-10-13 20:43:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 187. [2021-10-13 20:43:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 155 states have (on average 2.9290322580645163) internal successors, (454), 186 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) [2021-10-13 20:43:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 454 transitions. [2021-10-13 20:43:42,476 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 454 transitions. Word has length 2 [2021-10-13 20:43:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:42,477 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 454 transitions. [2021-10-13 20:43:42,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 454 transitions. [2021-10-13 20:43:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:43:42,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:42,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:43:42,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:42,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:42,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash 21516, now seen corresponding path program 1 times [2021-10-13 20:43:42,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:42,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793949716] [2021-10-13 20:43:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:42,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:42,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:42,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 20:43:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:42,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:43:42,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:43,034 INFO L354 Elim1Store]: treesize reduction 145, result has 24.9 percent of original size [2021-10-13 20:43:43,035 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 37 treesize of output 71 [2021-10-13 20:43:43,046 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 72 treesize of output 70 [2021-10-13 20:43:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:43,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:43,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:43,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793949716] [2021-10-13 20:43:43,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793949716] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:43,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:43,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:43:43,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694925160] [2021-10-13 20:43:43,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:43:43,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:43,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:43:43,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:43,249 INFO L87 Difference]: Start difference. First operand 187 states and 454 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:43,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:43,378 INFO L93 Difference]: Finished difference Result 144 states and 325 transitions. [2021-10-13 20:43:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:43:43,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 20:43:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:43,381 INFO L225 Difference]: With dead ends: 144 [2021-10-13 20:43:43,381 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 20:43:43,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 20:43:43,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-13 20:43:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 2.6639344262295084) internal successors, (325), 143 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 325 transitions. [2021-10-13 20:43:43,391 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 325 transitions. Word has length 2 [2021-10-13 20:43:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:43,392 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 325 transitions. [2021-10-13 20:43:43,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:43,392 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 325 transitions. [2021-10-13 20:43:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:43:43,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:43,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 20:43:43,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:43,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:43,605 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:43,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:43,606 INFO L82 PathProgramCache]: Analyzing trace with hash 20692550, now seen corresponding path program 1 times [2021-10-13 20:43:43,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:43,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276029415] [2021-10-13 20:43:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:43,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:43,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:43,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 20:43:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:43,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:43:43,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:43,723 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:43:43,723 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 [2021-10-13 20:43:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:43,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:43,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:43,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276029415] [2021-10-13 20:43:43,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276029415] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:43,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:43,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:43:43,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751497259] [2021-10-13 20:43:43,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:43:43,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:43:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:43:43,767 INFO L87 Difference]: Start difference. First operand 144 states and 325 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:43,832 INFO L93 Difference]: Finished difference Result 131 states and 299 transitions. [2021-10-13 20:43:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:43:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 4 [2021-10-13 20:43:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:43,834 INFO L225 Difference]: With dead ends: 131 [2021-10-13 20:43:43,834 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 20:43:43,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:43:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 20:43:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-13 20:43:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 115 states have (on average 2.6) internal successors, (299), 130 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 299 transitions. [2021-10-13 20:43:43,841 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 299 transitions. Word has length 4 [2021-10-13 20:43:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:43,842 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 299 transitions. [2021-10-13 20:43:43,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 299 transitions. [2021-10-13 20:43:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:43:43,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:43,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 20:43:43,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:44,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:44,044 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash 20692548, now seen corresponding path program 1 times [2021-10-13 20:43:44,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:44,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71089402] [2021-10-13 20:43:44,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:44,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:44,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:44,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:44,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 20:43:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:43:44,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:44,278 INFO L354 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2021-10-13 20:43:44,278 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 64 [2021-10-13 20:43:44,285 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 66 treesize of output 64 [2021-10-13 20:43:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:44,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:44,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:44,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71089402] [2021-10-13 20:43:44,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71089402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:44,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:44,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:43:44,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747709710] [2021-10-13 20:43:44,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:43:44,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:43:44,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:44,681 INFO L87 Difference]: Start difference. First operand 131 states and 299 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:44,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:44,761 INFO L93 Difference]: Finished difference Result 118 states and 273 transitions. [2021-10-13 20:43:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:43:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 20:43:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:44,765 INFO L225 Difference]: With dead ends: 118 [2021-10-13 20:43:44,766 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 20:43:44,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 20:43:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-13 20:43:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 108 states have (on average 2.5277777777777777) internal successors, (273), 117 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 273 transitions. [2021-10-13 20:43:44,774 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 273 transitions. Word has length 4 [2021-10-13 20:43:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:44,775 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 273 transitions. [2021-10-13 20:43:44,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 273 transitions. [2021-10-13 20:43:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:43:44,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:44,777 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 20:43:44,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:44,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:44,989 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:44,990 INFO L82 PathProgramCache]: Analyzing trace with hash 20716560, now seen corresponding path program 1 times [2021-10-13 20:43:44,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:44,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931062294] [2021-10-13 20:43:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:44,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:44,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:44,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:44,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 20:43:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:45,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:43:45,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:45,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:45,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:45,294 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:43:45,294 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 [2021-10-13 20:43:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:45,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:45,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:45,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931062294] [2021-10-13 20:43:45,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931062294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:43:45,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:43:45,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 20:43:45,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62801864] [2021-10-13 20:43:45,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:43:45,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:45,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:43:45,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:43:45,955 INFO L87 Difference]: Start difference. First operand 118 states and 273 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:47,205 INFO L93 Difference]: Finished difference Result 687 states and 1606 transitions. [2021-10-13 20:43:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 20:43:47,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 20:43:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:47,215 INFO L225 Difference]: With dead ends: 687 [2021-10-13 20:43:47,215 INFO L226 Difference]: Without dead ends: 687 [2021-10-13 20:43:47,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 860.9ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:43:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-10-13 20:43:47,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 122. [2021-10-13 20:43:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 112 states have (on average 2.5089285714285716) internal successors, (281), 121 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 281 transitions. [2021-10-13 20:43:47,227 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 281 transitions. Word has length 4 [2021-10-13 20:43:47,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:47,228 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 281 transitions. [2021-10-13 20:43:47,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 281 transitions. [2021-10-13 20:43:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:43:47,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:47,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:43:47,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:47,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:47,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash 641462688, now seen corresponding path program 1 times [2021-10-13 20:43:47,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:47,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910752308] [2021-10-13 20:43:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:47,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:47,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:47,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:47,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 20:43:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:47,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:43:47,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:47,534 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:43:47,535 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 [2021-10-13 20:43:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:47,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:47,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:47,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910752308] [2021-10-13 20:43:47,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910752308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:47,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:47,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 20:43:47,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163923121] [2021-10-13 20:43:47,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:43:47,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:43:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:43:47,589 INFO L87 Difference]: Start difference. First operand 122 states and 281 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:47,672 INFO L93 Difference]: Finished difference Result 94 states and 213 transitions. [2021-10-13 20:43:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:43:47,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 20:43:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:47,688 INFO L225 Difference]: With dead ends: 94 [2021-10-13 20:43:47,688 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 20:43:47,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:43:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 20:43:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-13 20:43:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 2.393258426966292) internal successors, (213), 93 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 213 transitions. [2021-10-13 20:43:47,694 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 213 transitions. Word has length 5 [2021-10-13 20:43:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:47,694 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 213 transitions. [2021-10-13 20:43:47,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 213 transitions. [2021-10-13 20:43:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:43:47,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:47,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:43:47,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:47,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:47,906 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:47,907 INFO L82 PathProgramCache]: Analyzing trace with hash 641462690, now seen corresponding path program 1 times [2021-10-13 20:43:47,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:47,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066623199] [2021-10-13 20:43:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:47,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:47,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:47,910 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:47,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 20:43:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:47,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:43:47,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:47,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:47,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:48,151 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:43:48,152 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 [2021-10-13 20:43:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:48,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:48,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:48,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066623199] [2021-10-13 20:43:48,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066623199] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:48,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:48,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 20:43:48,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121514796] [2021-10-13 20:43:48,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:43:48,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:48,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:43:48,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:43:48,599 INFO L87 Difference]: Start difference. First operand 94 states and 213 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:48,993 INFO L93 Difference]: Finished difference Result 166 states and 392 transitions. [2021-10-13 20:43:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 20:43:48,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 20:43:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:48,996 INFO L225 Difference]: With dead ends: 166 [2021-10-13 20:43:48,996 INFO L226 Difference]: Without dead ends: 166 [2021-10-13 20:43:48,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 327.9ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-13 20:43:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-13 20:43:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 142. [2021-10-13 20:43:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 2.576642335766423) internal successors, (353), 141 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2021-10-13 20:43:49,003 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 5 [2021-10-13 20:43:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:49,004 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2021-10-13 20:43:49,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2021-10-13 20:43:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:43:49,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:49,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:43:49,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:49,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:49,206 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:49,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2023110664, now seen corresponding path program 1 times [2021-10-13 20:43:49,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:49,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838973979] [2021-10-13 20:43:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:49,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:49,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:49,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:49,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 20:43:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:49,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:43:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:49,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:49,475 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:43:49,476 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 [2021-10-13 20:43:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:49,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:49,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:49,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838973979] [2021-10-13 20:43:49,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838973979] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:43:49,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:43:49,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 20:43:49,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994288278] [2021-10-13 20:43:49,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:43:49,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:49,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:43:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:43:49,929 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:50,373 INFO L93 Difference]: Finished difference Result 232 states and 609 transitions. [2021-10-13 20:43:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 20:43:50,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 20:43:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:50,377 INFO L225 Difference]: With dead ends: 232 [2021-10-13 20:43:50,377 INFO L226 Difference]: Without dead ends: 232 [2021-10-13 20:43:50,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 309.1ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-13 20:43:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-13 20:43:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 208. [2021-10-13 20:43:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 2.812807881773399) internal successors, (571), 207 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 571 transitions. [2021-10-13 20:43:50,386 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 571 transitions. Word has length 7 [2021-10-13 20:43:50,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:50,387 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 571 transitions. [2021-10-13 20:43:50,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 571 transitions. [2021-10-13 20:43:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 20:43:50,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:50,388 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-13 20:43:50,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:50,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:50,601 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:43:50,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:50,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1807450992, now seen corresponding path program 2 times [2021-10-13 20:43:50,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:50,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945823261] [2021-10-13 20:43:50,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:43:50,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:50,605 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:50,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 20:43:50,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:43:50,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:43:50,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:43:50,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:50,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:50,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:50,922 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:43:50,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-13 20:43:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:51,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:53,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:53,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945823261] [2021-10-13 20:43:53,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945823261] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:43:53,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:43:53,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 20:43:53,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039463695] [2021-10-13 20:43:53,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:43:53,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:43:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:43:53,686 INFO L87 Difference]: Start difference. First operand 208 states and 571 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:44:00,564 INFO L93 Difference]: Finished difference Result 2803 states and 7802 transitions. [2021-10-13 20:44:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 20:44:00,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 20:44:00,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:44:00,590 INFO L225 Difference]: With dead ends: 2803 [2021-10-13 20:44:00,591 INFO L226 Difference]: Without dead ends: 2803 [2021-10-13 20:44:00,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6069.4ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:44:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-10-13 20:44:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 216. [2021-10-13 20:44:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 2.7819905213270144) internal successors, (587), 215 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 587 transitions. [2021-10-13 20:44:00,631 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 587 transitions. Word has length 8 [2021-10-13 20:44:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:44:00,632 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 587 transitions. [2021-10-13 20:44:00,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 587 transitions. [2021-10-13 20:44:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 20:44:00,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:44:00,634 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 20:44:00,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 20:44:00,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:44:00,847 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:44:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:44:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash -214964510, now seen corresponding path program 1 times [2021-10-13 20:44:00,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:44:00,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635304053] [2021-10-13 20:44:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:44:00,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:44:00,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:44:00,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:44:00,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 20:44:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:44:00,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:44:00,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:44:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:01,180 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:44:01,180 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 [2021-10-13 20:44:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:01,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:44:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:02,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:44:02,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635304053] [2021-10-13 20:44:02,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635304053] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:44:02,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:44:02,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-13 20:44:02,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554402751] [2021-10-13 20:44:02,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 20:44:02,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:44:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 20:44:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 20:44:02,479 INFO L87 Difference]: Start difference. First operand 216 states and 587 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 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) [2021-10-13 20:44:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:44:06,246 INFO L93 Difference]: Finished difference Result 610 states and 1564 transitions. [2021-10-13 20:44:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 20:44:06,258 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 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 11 [2021-10-13 20:44:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:44:06,263 INFO L225 Difference]: With dead ends: 610 [2021-10-13 20:44:06,263 INFO L226 Difference]: Without dead ends: 610 [2021-10-13 20:44:06,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2395.2ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:44:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-13 20:44:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 316. [2021-10-13 20:44:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 311 states have (on average 2.729903536977492) internal successors, (849), 315 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 849 transitions. [2021-10-13 20:44:06,280 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 849 transitions. Word has length 11 [2021-10-13 20:44:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:44:06,280 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 849 transitions. [2021-10-13 20:44:06,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 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) [2021-10-13 20:44:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 849 transitions. [2021-10-13 20:44:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 20:44:06,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:44:06,288 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:44:06,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 20:44:06,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:44:06,502 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:44:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:44:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1477815188, now seen corresponding path program 1 times [2021-10-13 20:44:06,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:44:06,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387784296] [2021-10-13 20:44:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:44:06,505 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:44:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:44:06,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:44:06,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 20:44:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:44:06,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:44:06,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:44:06,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:06,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:06,808 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:44:06,808 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 [2021-10-13 20:44:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:07,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:44:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:08,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:44:08,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387784296] [2021-10-13 20:44:08,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387784296] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:44:08,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:44:08,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-10-13 20:44:08,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543703176] [2021-10-13 20:44:08,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:44:08,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:44:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:44:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:44:08,334 INFO L87 Difference]: Start difference. First operand 316 states and 849 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:44:10,313 INFO L93 Difference]: Finished difference Result 498 states and 1256 transitions. [2021-10-13 20:44:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 20:44:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 20:44:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:44:10,318 INFO L225 Difference]: With dead ends: 498 [2021-10-13 20:44:10,318 INFO L226 Difference]: Without dead ends: 498 [2021-10-13 20:44:10,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1435.8ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:44:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-13 20:44:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 386. [2021-10-13 20:44:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 381 states have (on average 2.7086614173228347) internal successors, (1032), 385 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1032 transitions. [2021-10-13 20:44:10,335 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1032 transitions. Word has length 12 [2021-10-13 20:44:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:44:10,335 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1032 transitions. [2021-10-13 20:44:10,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1032 transitions. [2021-10-13 20:44:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 20:44:10,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:44:10,338 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 20:44:10,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 20:44:10,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:44:10,551 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:44:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:44:10,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1760467294, now seen corresponding path program 1 times [2021-10-13 20:44:10,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:44:10,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782266437] [2021-10-13 20:44:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:44:10,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:44:10,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:44:10,555 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:44:10,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 20:44:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:44:10,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:44:10,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:44:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:10,898 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:44:10,899 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 [2021-10-13 20:44:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:44:11,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:44:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:44:12,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:44:12,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782266437] [2021-10-13 20:44:12,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782266437] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:44:12,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:44:12,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 20:44:12,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92784288] [2021-10-13 20:44:12,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:44:12,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:44:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:44:12,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:44:12,296 INFO L87 Difference]: Start difference. First operand 386 states and 1032 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:44:14,671 INFO L93 Difference]: Finished difference Result 970 states and 2470 transitions. [2021-10-13 20:44:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 20:44:14,673 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 20:44:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:44:14,679 INFO L225 Difference]: With dead ends: 970 [2021-10-13 20:44:14,679 INFO L226 Difference]: Without dead ends: 970 [2021-10-13 20:44:14,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1994.1ms TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:44:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-10-13 20:44:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 684. [2021-10-13 20:44:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 679 states have (on average 2.842415316642121) internal successors, (1930), 683 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1930 transitions. [2021-10-13 20:44:14,704 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1930 transitions. Word has length 13 [2021-10-13 20:44:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:44:14,705 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1930 transitions. [2021-10-13 20:44:14,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1930 transitions. [2021-10-13 20:44:14,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 20:44:14,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:44:14,706 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:44:14,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 20:44:14,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:44:14,919 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:44:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:44:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1457004374, now seen corresponding path program 2 times [2021-10-13 20:44:14,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:44:14,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696777333] [2021-10-13 20:44:14,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:44:14,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:44:14,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:44:14,923 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) [2021-10-13 20:44:14,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 20:44:15,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:44:15,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:44:15,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:44:15,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:44:15,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:15,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:15,306 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:44:15,307 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 [2021-10-13 20:44:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:44:15,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:44:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:44:16,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:44:16,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696777333] [2021-10-13 20:44:16,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696777333] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:44:16,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:44:16,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 20:44:16,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295690766] [2021-10-13 20:44:16,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:44:16,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:44:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:44:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:44:16,699 INFO L87 Difference]: Start difference. First operand 684 states and 1930 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:44:18,933 INFO L93 Difference]: Finished difference Result 1296 states and 3539 transitions. [2021-10-13 20:44:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 20:44:18,935 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 20:44:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:44:18,944 INFO L225 Difference]: With dead ends: 1296 [2021-10-13 20:44:18,944 INFO L226 Difference]: Without dead ends: 1296 [2021-10-13 20:44:18,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1990.8ms TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:44:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-10-13 20:44:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1052. [2021-10-13 20:44:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1047 states have (on average 2.981852913085005) internal successors, (3122), 1051 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 3122 transitions. [2021-10-13 20:44:18,983 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 3122 transitions. Word has length 13 [2021-10-13 20:44:18,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:44:18,983 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 3122 transitions. [2021-10-13 20:44:18,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:18,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 3122 transitions. [2021-10-13 20:44:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 20:44:18,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:44:18,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:44:19,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 20:44:19,209 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 [2021-10-13 20:44:19,209 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:44:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:44:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash -337864193, now seen corresponding path program 1 times [2021-10-13 20:44:19,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:44:19,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906847787] [2021-10-13 20:44:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:44:19,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:44:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:44:19,213 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) [2021-10-13 20:44:19,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 20:44:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:44:19,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:44:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:44:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:19,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:44:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:19,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:44:19,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906847787] [2021-10-13 20:44:19,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906847787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:44:19,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:44:19,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:44:19,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850514103] [2021-10-13 20:44:19,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:44:19,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:44:19,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:44:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:44:19,442 INFO L87 Difference]: Start difference. First operand 1052 states and 3122 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:44:19,481 INFO L93 Difference]: Finished difference Result 1097 states and 3201 transitions. [2021-10-13 20:44:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:44:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 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 14 [2021-10-13 20:44:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:44:19,487 INFO L225 Difference]: With dead ends: 1097 [2021-10-13 20:44:19,487 INFO L226 Difference]: Without dead ends: 1065 [2021-10-13 20:44:19,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:44:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-10-13 20:44:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1053. [2021-10-13 20:44:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1048 states have (on average 2.9723282442748094) internal successors, (3115), 1052 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 3115 transitions. [2021-10-13 20:44:19,524 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 3115 transitions. Word has length 14 [2021-10-13 20:44:19,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:44:19,525 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 3115 transitions. [2021-10-13 20:44:19,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:44:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 3115 transitions. [2021-10-13 20:44:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:44:19,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:44:19,526 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-13 20:44:19,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 20:44:19,738 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 [2021-10-13 20:44:19,739 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:44:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:44:19,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1979155056, now seen corresponding path program 3 times [2021-10-13 20:44:19,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:44:19,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707562191] [2021-10-13 20:44:19,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:44:19,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:44:19,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:44:19,741 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) [2021-10-13 20:44:19,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 20:44:20,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 20:44:20,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:44:20,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 20:44:20,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:44:20,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:20,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:44:20,478 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-13 20:44:20,478 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 [2021-10-13 20:44:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:21,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:44:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:44:27,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:44:27,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707562191] [2021-10-13 20:44:27,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707562191] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:44:27,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:44:27,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-13 20:44:27,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751359065] [2021-10-13 20:44:27,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 20:44:27,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:44:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 20:44:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-13 20:44:27,950 INFO L87 Difference]: Start difference. First operand 1053 states and 3115 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) [2021-10-13 20:44:38,685 WARN L207 SmtUtils]: Spent 8.16 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-13 20:44:48,334 WARN L207 SmtUtils]: Spent 8.72 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-13 20:44:57,349 WARN L207 SmtUtils]: Spent 7.76 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-13 20:45:04,611 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-13 20:45:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:45:32,236 INFO L93 Difference]: Finished difference Result 22640 states and 68494 transitions. [2021-10-13 20:45:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 20:45:32,238 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 [2021-10-13 20:45:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:45:32,381 INFO L225 Difference]: With dead ends: 22640 [2021-10-13 20:45:32,382 INFO L226 Difference]: Without dead ends: 22640 [2021-10-13 20:45:32,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 60088.0ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 20:45:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22640 states. [2021-10-13 20:45:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22640 to 1069. [2021-10-13 20:45:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1064 states have (on average 2.957706766917293) internal successors, (3147), 1068 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 3147 transitions. [2021-10-13 20:45:32,710 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 3147 transitions. Word has length 16 [2021-10-13 20:45:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:45:32,710 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 3147 transitions. [2021-10-13 20:45:32,710 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) [2021-10-13 20:45:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 3147 transitions. [2021-10-13 20:45:32,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 20:45:32,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:45:32,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:45:32,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 20:45:32,926 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 [2021-10-13 20:45:32,926 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:45:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:45:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 340695090, now seen corresponding path program 1 times [2021-10-13 20:45:32,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:45:32,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466805474] [2021-10-13 20:45:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:45:32,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:45:32,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:45:32,972 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) [2021-10-13 20:45:32,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 20:45:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:45:33,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:45:33,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:45:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:45:33,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:45:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:45:33,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:45:33,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466805474] [2021-10-13 20:45:33,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466805474] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 20:45:33,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 20:45:33,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-10-13 20:45:33,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019821816] [2021-10-13 20:45:33,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:45:33,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:45:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:45:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:45:33,359 INFO L87 Difference]: Start difference. First operand 1069 states and 3147 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:45:33,481 INFO L93 Difference]: Finished difference Result 1049 states and 3071 transitions. [2021-10-13 20:45:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:45:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 20:45:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:45:33,487 INFO L225 Difference]: With dead ends: 1049 [2021-10-13 20:45:33,487 INFO L226 Difference]: Without dead ends: 1049 [2021-10-13 20:45:33,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 20:45:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-10-13 20:45:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1045. [2021-10-13 20:45:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1040 states have (on average 2.9471153846153846) internal successors, (3065), 1044 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 3065 transitions. [2021-10-13 20:45:33,518 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 3065 transitions. Word has length 17 [2021-10-13 20:45:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:45:33,519 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 3065 transitions. [2021-10-13 20:45:33,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 3065 transitions. [2021-10-13 20:45:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:45:33,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:45:33,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:45:33,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 20:45:33,734 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 [2021-10-13 20:45:33,735 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:45:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:45:33,735 INFO L82 PathProgramCache]: Analyzing trace with hash -110069009, now seen corresponding path program 1 times [2021-10-13 20:45:33,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:45:33,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076442822] [2021-10-13 20:45:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:45:33,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:45:33,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:45:33,738 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) [2021-10-13 20:45:33,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 20:45:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:45:33,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:45:33,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:45:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:45:34,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:45:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:45:34,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:45:34,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076442822] [2021-10-13 20:45:34,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076442822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:45:34,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:45:34,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:45:34,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349705009] [2021-10-13 20:45:34,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:45:34,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:45:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:45:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:45:34,344 INFO L87 Difference]: Start difference. First operand 1045 states and 3065 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:45:35,002 INFO L93 Difference]: Finished difference Result 1239 states and 3509 transitions. [2021-10-13 20:45:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:45:35,004 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:45:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:45:35,007 INFO L225 Difference]: With dead ends: 1239 [2021-10-13 20:45:35,008 INFO L226 Difference]: Without dead ends: 1239 [2021-10-13 20:45:35,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 396.4ms TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:45:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-10-13 20:45:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1129. [2021-10-13 20:45:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1124 states have (on average 2.929715302491103) internal successors, (3293), 1128 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 3293 transitions. [2021-10-13 20:45:35,044 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 3293 transitions. Word has length 18 [2021-10-13 20:45:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:45:35,044 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 3293 transitions. [2021-10-13 20:45:35,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 3293 transitions. [2021-10-13 20:45:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:45:35,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:45:35,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:45:35,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 20:45:35,261 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 [2021-10-13 20:45:35,261 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:45:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:45:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -131343107, now seen corresponding path program 2 times [2021-10-13 20:45:35,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:45:35,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002709567] [2021-10-13 20:45:35,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:45:35,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:45:35,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:45:35,265 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) [2021-10-13 20:45:35,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 20:45:35,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:45:35,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:45:35,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:45:35,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:45:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:45:35,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:45:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:45:35,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:45:35,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002709567] [2021-10-13 20:45:35,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002709567] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 20:45:35,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 20:45:35,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-10-13 20:45:35,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429970765] [2021-10-13 20:45:35,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:45:35,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:45:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:45:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:45:35,709 INFO L87 Difference]: Start difference. First operand 1129 states and 3293 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2021-10-13 20:45:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:45:35,826 INFO L93 Difference]: Finished difference Result 1129 states and 3201 transitions. [2021-10-13 20:45:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:45:35,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:45:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:45:35,830 INFO L225 Difference]: With dead ends: 1129 [2021-10-13 20:45:35,830 INFO L226 Difference]: Without dead ends: 1129 [2021-10-13 20:45:35,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 20:45:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-10-13 20:45:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1045. [2021-10-13 20:45:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1040 states have (on average 2.858653846153846) internal successors, (2973), 1044 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2973 transitions. [2021-10-13 20:45:35,864 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2973 transitions. Word has length 18 [2021-10-13 20:45:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:45:35,865 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2973 transitions. [2021-10-13 20:45:35,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2021-10-13 20:45:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2973 transitions. [2021-10-13 20:45:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:45:35,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:45:35,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:45:35,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 20:45:36,080 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 [2021-10-13 20:45:36,081 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:45:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:45:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash -546358688, now seen corresponding path program 1 times [2021-10-13 20:45:36,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:45:36,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137049237] [2021-10-13 20:45:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:45:36,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:45:36,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:45:36,084 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) [2021-10-13 20:45:36,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 20:45:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:45:36,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 20:45:36,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:45:36,421 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 16 treesize of output 14 [2021-10-13 20:45:36,567 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-13 20:45:36,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-13 20:45:47,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:45:47,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:45:47,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:45:47,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:45:47,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:45:47,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:48:53,722 WARN L207 SmtUtils]: Spent 3.10 m on a formula simplification. DAG size of input: 347 DAG size of output: 126 [2021-10-13 20:48:53,723 INFO L354 Elim1Store]: treesize reduction 1645, result has 21.1 percent of original size [2021-10-13 20:48:53,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 108 treesize of output 484 [2021-10-13 20:55:34,672 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") [2021-10-13 20:55:34,672 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 [2021-10-13 20:55:34,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:55:34,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137049237] [2021-10-13 20:55:34,675 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") [2021-10-13 20:55:34,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1350620708] [2021-10-13 20:55:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:55:34,675 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 20:55:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-13 20:55:34,677 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 20:55:34,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 20:55:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:55:35,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 20:55:35,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:55:35,378 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 [2021-10-13 20:55:35,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889364604] [2021-10-13 20:55:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:55:35,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 20:55:35,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:55:35,381 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 20:55:35,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 20:55:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:55:35,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 20:55:35,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:55:35,860 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 [2021-10-13 20:55:35,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:55:35,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 20:55:35,860 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-13 20:55:35,861 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 20:55:35,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:55:35,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-13 20:55:35,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-13 20:55:35,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-13 20:55:35,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-13 20:55:35,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:55:35,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:55:35,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:55:35,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:55:35,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:55:35,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:55:35,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:55:35,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:55:35,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:55:35,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:55:35,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:55:35,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:55:35,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:55:35,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-13 20:55:35,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-13 20:55:35,874 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-13 20:55:35,875 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-13 20:55:35,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 20:55:36,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-13 20:55:36,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 20:55:36,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 20:55:36,496 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:55:36,496 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:55:36,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:55:36 BasicIcfg [2021-10-13 20:55:36,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:55:36,531 INFO L168 Benchmark]: Toolchain (without parser) took 735693.76 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 133.0 MB in the beginning and 109.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 55.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:55:36,531 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:55:36,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.00 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 120.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-13 20:55:36,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.10 ms. Allocated memory is still 157.3 MB. Free memory was 120.0 MB in the beginning and 117.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:55:36,533 INFO L168 Benchmark]: Boogie Preprocessor took 44.35 ms. Allocated memory is still 157.3 MB. Free memory was 117.9 MB in the beginning and 116.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:55:36,533 INFO L168 Benchmark]: RCFGBuilder took 858.23 ms. Allocated memory is still 157.3 MB. Free memory was 116.2 MB in the beginning and 133.4 MB in the end (delta: -17.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:55:36,533 INFO L168 Benchmark]: TraceAbstraction took 734275.02 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 132.9 MB in the beginning and 109.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:55:36,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 437.00 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 120.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 65.10 ms. Allocated memory is still 157.3 MB. Free memory was 120.0 MB in the beginning and 117.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.35 ms. Allocated memory is still 157.3 MB. Free memory was 117.9 MB in the beginning and 116.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 858.23 ms. Allocated memory is still 157.3 MB. Free memory was 116.2 MB in the beginning and 133.4 MB in the end (delta: -17.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 734275.02 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 132.9 MB in the beginning and 109.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17679.2ms, 159 PlacesBefore, 42 PlacesAfterwards, 165 TransitionsBefore, 38 TransitionsAfterwards, 3876 CoEnabledTransitionPairs, 6 FixpointIterations, 77 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 19 ConcurrentYvCompositions, 10 ChoiceCompositions, 186 TotalNumberOfCompositions, 4525 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4015, positive: 3974, positive conditional: 0, positive unconditional: 3974, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2701, positive: 2677, positive conditional: 0, positive unconditional: 2677, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2701, positive: 2666, positive conditional: 0, positive unconditional: 2666, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 35, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 837, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 825, negative conditional: 0, negative unconditional: 825, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4015, positive: 1297, positive conditional: 0, positive unconditional: 1297, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 2701, unknown conditional: 0, unknown unconditional: 2701] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 77]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 77. Possible FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L65] 0 pthread_t t1, t2; [L67] 0 N = __VERIFIER_nondet_int() [L38] COND TRUE 0 !cond [L38] COND TRUE 0 !cond [L86] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L87] 0 int i = 0; [L87] COND TRUE 0 i < size [L88] 0 arr[i] = __VERIFIER_nondet_int() [L87] 0 i++ [L90] 0 return arr; [L68] 0 A = create_fresh_int_array(N) [L71] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L49] 1 int i=0; [L49] COND TRUE 1 i