/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-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:00:34,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:00:34,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:00:34,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 16:00:34,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 16:00:34,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 16:00:34,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 16:00:34,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 16:00:34,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 16:00:34,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 16:00:34,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 16:00:34,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 16:00:34,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:00:34,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:00:34,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:00:34,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:00:34,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:00:34,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:00:34,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:00:34,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:00:34,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:00:34,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:00:34,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:00:34,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:00:34,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-07 16:00:34,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-07 16:00:34,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-07 16:00:34,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-07 16:00:34,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-07 16:00:34,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-07 16:00:34,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:00:34,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:00:34,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:00:34,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:00:34,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:00:34,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:00:34,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:00:34,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:00:34,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:00:34,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:00:34,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:00:34,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:00:34,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:00:34,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:00:34,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:00:34,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:00:34,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:00:34,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:00:34,464 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:00:34,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:00:34,465 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:00:34,465 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:00:34,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:00:34,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:00:34,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:00:34,467 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:00:34,467 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:00:34,467 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:00:34,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:00:34,468 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:00:34,468 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:00:34,468 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:00:34,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:00:34,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:00:34,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:00:34,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:00:34,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:00:34,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:00:34,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:00:34,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:00:34,470 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:00:34,470 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:00:34,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:00:34,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:00:34,471 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:00:34,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:00:34,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:00:34,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:00:34,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:00:34,893 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:00:34,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-10-07 16:00:34,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3cefc28b/49e3b574bf1340b89decd2670cf5712d/FLAGd62591fbc [2021-10-07 16:00:35,678 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:00:35,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-10-07 16:00:35,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3cefc28b/49e3b574bf1340b89decd2670cf5712d/FLAGd62591fbc [2021-10-07 16:00:36,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3cefc28b/49e3b574bf1340b89decd2670cf5712d [2021-10-07 16:00:36,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:00:36,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:00:36,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:00:36,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:00:36,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:00:36,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f997f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36, skipping insertion in model container [2021-10-07 16:00:36,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:00:36,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:00:36,265 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-channel-sum.wvr.c[2462,2475] [2021-10-07 16:00:36,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:36,296 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:00:36,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:00:36,318 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-channel-sum.wvr.c[2462,2475] [2021-10-07 16:00:36,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:36,329 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:00:36,359 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-channel-sum.wvr.c[2462,2475] [2021-10-07 16:00:36,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:36,385 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:00:36,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36 WrapperNode [2021-10-07 16:00:36,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:00:36,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:00:36,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:00:36,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:00:36,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:00:36,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:00:36,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:00:36,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:00:36,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:00:36,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:00:36,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:00:36,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:00:36,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (1/1) ... [2021-10-07 16:00:36,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:00:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:00:36,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:00:36,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:00:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:00:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:00:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:00:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:00:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:00:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:00:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:00:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:00:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:00:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:00:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:00:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:00:36,653 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:00:37,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:00:37,409 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-07 16:00:37,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:00:37 BoogieIcfgContainer [2021-10-07 16:00:37,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:00:37,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:00:37,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:00:37,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:00:37,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:00:36" (1/3) ... [2021-10-07 16:00:37,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c407119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:00:37, skipping insertion in model container [2021-10-07 16:00:37,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:36" (2/3) ... [2021-10-07 16:00:37,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c407119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:00:37, skipping insertion in model container [2021-10-07 16:00:37,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:00:37" (3/3) ... [2021-10-07 16:00:37,426 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2021-10-07 16:00:37,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:00:37,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-07 16:00:37,433 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:00:37,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,519 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,519 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,519 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,520 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,520 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,520 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,521 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,521 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,531 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,532 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,541 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,541 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,542 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,545 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,546 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,546 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,546 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,546 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,547 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,550 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,554 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,567 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,573 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,576 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,580 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,589 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,589 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,589 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,590 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,590 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,591 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,591 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,591 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,591 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,592 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:37,606 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:00:37,682 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:00:37,695 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:00:37,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-10-07 16:00:37,722 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:00:37,735 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 166 transitions, 348 flow [2021-10-07 16:00:37,743 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 166 transitions, 348 flow [2021-10-07 16:00:37,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 166 transitions, 348 flow [2021-10-07 16:00:37,815 INFO L129 PetriNetUnfolder]: 14/164 cut-off events. [2021-10-07 16:00:37,815 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:00:37,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 14/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 256 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2021-10-07 16:00:37,829 INFO L116 LiptonReduction]: Number of co-enabled transitions 3100 [2021-10-07 16:00:58,898 INFO L131 LiptonReduction]: Checked pairs total: 3872 [2021-10-07 16:00:58,898 INFO L133 LiptonReduction]: Total number of compositions: 194 [2021-10-07 16:00:58,908 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 36 transitions, 88 flow [2021-10-07 16:00:58,938 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 166 states, 100 states have (on average 4.07) internal successors, (407), 165 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:58,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 100 states have (on average 4.07) internal successors, (407), 165 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:00:58,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:58,947 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:00:58,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:00:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash 21611, now seen corresponding path program 1 times [2021-10-07 16:00:58,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:58,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466562961] [2021-10-07 16:00:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:58,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:58,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:58,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:58,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:00:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:59,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:00:59,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:59,184 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:00:59,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 16:00:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:59,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:59,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:59,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466562961] [2021-10-07 16:00:59,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466562961] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:59,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:59,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:00:59,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427306183] [2021-10-07 16:00:59,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:00:59,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:00:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:00:59,260 INFO L87 Difference]: Start difference. First operand has 166 states, 100 states have (on average 4.07) internal successors, (407), 165 states have internal predecessors, (407), 0 states have call successors, (0), 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) [2021-10-07 16:00:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:59,395 INFO L93 Difference]: Finished difference Result 164 states and 405 transitions. [2021-10-07 16:00:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:00:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:59,412 INFO L225 Difference]: With dead ends: 164 [2021-10-07 16:00:59,413 INFO L226 Difference]: Without dead ends: 164 [2021-10-07 16:00:59,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:00:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-07 16:00:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-07 16:00:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 4.05) internal successors, (405), 163 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 405 transitions. [2021-10-07 16:00:59,478 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 405 transitions. Word has length 2 [2021-10-07 16:00:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:59,479 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 405 transitions. [2021-10-07 16:00:59,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 405 transitions. [2021-10-07 16:00:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:00:59,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:59,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:00:59,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:59,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:59,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:00:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash 21612, now seen corresponding path program 1 times [2021-10-07 16:00:59,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:59,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712028594] [2021-10-07 16:00:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:59,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:59,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:59,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:59,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:00:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:59,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:00:59,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:59,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:00:59,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:00,067 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:01:00,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:01:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:00,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:00,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:00,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712028594] [2021-10-07 16:01:00,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712028594] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:00,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:00,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:00,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531152256] [2021-10-07 16:01:00,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:00,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:00,315 INFO L87 Difference]: Start difference. First operand 164 states and 405 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) [2021-10-07 16:01:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:00,703 INFO L93 Difference]: Finished difference Result 327 states and 812 transitions. [2021-10-07 16:01:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:01:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:01:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:00,713 INFO L225 Difference]: With dead ends: 327 [2021-10-07 16:01:00,714 INFO L226 Difference]: Without dead ends: 327 [2021-10-07 16:01:00,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:00,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-10-07 16:01:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 166. [2021-10-07 16:01:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 102 states have (on average 4.049019607843137) internal successors, (413), 165 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 413 transitions. [2021-10-07 16:01:00,768 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 413 transitions. Word has length 2 [2021-10-07 16:01:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:00,768 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 413 transitions. [2021-10-07 16:01:00,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 413 transitions. [2021-10-07 16:01:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:01:00,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:00,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:01:00,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:00,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:00,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:00,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:00,974 INFO L82 PathProgramCache]: Analyzing trace with hash 21778, now seen corresponding path program 1 times [2021-10-07 16:01:00,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:00,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88053445] [2021-10-07 16:01:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:00,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:00,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:00,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:00,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:01:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:01,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:01:01,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:01,316 INFO L354 Elim1Store]: treesize reduction 145, result has 24.9 percent of original size [2021-10-07 16:01:01,317 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 39 treesize of output 73 [2021-10-07 16:01:01,327 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 74 treesize of output 72 [2021-10-07 16:01:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:01,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:01,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:01,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88053445] [2021-10-07 16:01:01,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88053445] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:01,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:01,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:01,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106635878] [2021-10-07 16:01:01,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:01,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:01,563 INFO L87 Difference]: Start difference. First operand 166 states and 413 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) [2021-10-07 16:01:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:01,706 INFO L93 Difference]: Finished difference Result 137 states and 326 transitions. [2021-10-07 16:01:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:01:01,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:01:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:01,709 INFO L225 Difference]: With dead ends: 137 [2021-10-07 16:01:01,709 INFO L226 Difference]: Without dead ends: 137 [2021-10-07 16:01:01,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-07 16:01:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-10-07 16:01:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 89 states have (on average 3.662921348314607) internal successors, (326), 136 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 326 transitions. [2021-10-07 16:01:01,722 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 326 transitions. Word has length 2 [2021-10-07 16:01:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:01,723 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 326 transitions. [2021-10-07 16:01:01,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 326 transitions. [2021-10-07 16:01:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:01:01,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:01,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:01:01,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:01,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:01,937 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:01,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:01,939 INFO L82 PathProgramCache]: Analyzing trace with hash 21779, now seen corresponding path program 1 times [2021-10-07 16:01:01,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:01,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890746231] [2021-10-07 16:01:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:01,940 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:01,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:01,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:01,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:01:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:02,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:01:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:02,055 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:01:02,056 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 26 treesize of output 33 [2021-10-07 16:01:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:02,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:02,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:02,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890746231] [2021-10-07 16:01:02,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890746231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:02,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:02,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:02,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873320481] [2021-10-07 16:01:02,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:02,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:02,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:02,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:02,109 INFO L87 Difference]: Start difference. First operand 137 states and 326 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) [2021-10-07 16:01:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:02,188 INFO L93 Difference]: Finished difference Result 108 states and 239 transitions. [2021-10-07 16:01:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:01:02,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:01:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:02,190 INFO L225 Difference]: With dead ends: 108 [2021-10-07 16:01:02,190 INFO L226 Difference]: Without dead ends: 108 [2021-10-07 16:01:02,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-07 16:01:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-07 16:01:02,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 76 states have (on average 3.1447368421052633) internal successors, (239), 107 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 239 transitions. [2021-10-07 16:01:02,200 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 239 transitions. Word has length 2 [2021-10-07 16:01:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:02,201 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 239 transitions. [2021-10-07 16:01:02,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 239 transitions. [2021-10-07 16:01:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:01:02,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:02,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:01:02,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:02,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:02,415 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:02,416 INFO L82 PathProgramCache]: Analyzing trace with hash 20942355, now seen corresponding path program 1 times [2021-10-07 16:01:02,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:02,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662578668] [2021-10-07 16:01:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:02,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:02,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:02,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:02,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:01:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:02,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:01:02,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:02,527 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:01:02,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 16:01:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:02,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:02,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:02,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662578668] [2021-10-07 16:01:02,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662578668] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:02,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:02,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:01:02,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937210596] [2021-10-07 16:01:02,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:01:02,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:01:02,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:01:02,581 INFO L87 Difference]: Start difference. First operand 108 states and 239 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) [2021-10-07 16:01:02,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:02,654 INFO L93 Difference]: Finished difference Result 97 states and 217 transitions. [2021-10-07 16:01:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:01:02,655 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 [2021-10-07 16:01:02,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:02,656 INFO L225 Difference]: With dead ends: 97 [2021-10-07 16:01:02,657 INFO L226 Difference]: Without dead ends: 97 [2021-10-07 16:01:02,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:01:02,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-07 16:01:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-07 16:01:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 2.9726027397260273) internal successors, (217), 96 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 217 transitions. [2021-10-07 16:01:02,673 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 217 transitions. Word has length 4 [2021-10-07 16:01:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:02,674 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 217 transitions. [2021-10-07 16:01:02,674 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) [2021-10-07 16:01:02,674 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 217 transitions. [2021-10-07 16:01:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:01:02,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:02,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:01:02,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:02,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:02,878 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:02,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:02,880 INFO L82 PathProgramCache]: Analyzing trace with hash 20942356, now seen corresponding path program 1 times [2021-10-07 16:01:02,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:02,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143153388] [2021-10-07 16:01:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:02,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:02,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:02,882 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:02,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:01:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:02,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:01:02,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:03,116 INFO L354 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2021-10-07 16:01:03,117 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 [2021-10-07 16:01:03,124 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 [2021-10-07 16:01:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:03,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:03,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:03,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143153388] [2021-10-07 16:01:03,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143153388] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:03,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:03,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:03,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347671582] [2021-10-07 16:01:03,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:03,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:03,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:03,579 INFO L87 Difference]: Start difference. First operand 97 states and 217 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) [2021-10-07 16:01:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:03,695 INFO L93 Difference]: Finished difference Result 86 states and 195 transitions. [2021-10-07 16:01:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:01:03,696 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 [2021-10-07 16:01:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:03,698 INFO L225 Difference]: With dead ends: 86 [2021-10-07 16:01:03,698 INFO L226 Difference]: Without dead ends: 86 [2021-10-07 16:01:03,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-07 16:01:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-07 16:01:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 2.7857142857142856) internal successors, (195), 85 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 195 transitions. [2021-10-07 16:01:03,704 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 195 transitions. Word has length 4 [2021-10-07 16:01:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:03,704 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 195 transitions. [2021-10-07 16:01:03,705 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) [2021-10-07 16:01:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 195 transitions. [2021-10-07 16:01:03,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:01:03,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:03,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:01:03,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:03,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:03,919 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:03,920 INFO L82 PathProgramCache]: Analyzing trace with hash 20942361, now seen corresponding path program 1 times [2021-10-07 16:01:03,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:03,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867186345] [2021-10-07 16:01:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:03,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:03,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:03,922 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:03,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:01:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:03,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:01:03,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:04,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:04,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:04,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867186345] [2021-10-07 16:01:04,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867186345] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:04,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:04,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:04,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232137610] [2021-10-07 16:01:04,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:04,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:04,024 INFO L87 Difference]: Start difference. First operand 86 states and 195 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) [2021-10-07 16:01:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:04,158 INFO L93 Difference]: Finished difference Result 142 states and 291 transitions. [2021-10-07 16:01:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:01:04,159 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 [2021-10-07 16:01:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:04,161 INFO L225 Difference]: With dead ends: 142 [2021-10-07 16:01:04,161 INFO L226 Difference]: Without dead ends: 142 [2021-10-07 16:01:04,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-07 16:01:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2021-10-07 16:01:04,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 74 states have (on average 2.7432432432432434) internal successors, (203), 89 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 203 transitions. [2021-10-07 16:01:04,167 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 203 transitions. Word has length 4 [2021-10-07 16:01:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:04,168 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 203 transitions. [2021-10-07 16:01:04,168 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) [2021-10-07 16:01:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 203 transitions. [2021-10-07 16:01:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:01:04,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:04,169 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:01:04,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:04,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:04,382 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash 20902220, now seen corresponding path program 1 times [2021-10-07 16:01:04,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:04,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010532805] [2021-10-07 16:01:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:04,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:04,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:04,386 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:04,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:01:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:04,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:01:04,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:04,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:04,667 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:01:04,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:01:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:04,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:05,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:05,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010532805] [2021-10-07 16:01:05,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010532805] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:05,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:05,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:01:05,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774327519] [2021-10-07 16:01:05,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:01:05,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:01:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:01:05,451 INFO L87 Difference]: Start difference. First operand 90 states and 203 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:06,832 INFO L93 Difference]: Finished difference Result 519 states and 1186 transitions. [2021-10-07 16:01:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:01:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:01:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:06,840 INFO L225 Difference]: With dead ends: 519 [2021-10-07 16:01:06,840 INFO L226 Difference]: Without dead ends: 519 [2021-10-07 16:01:06,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1025.7ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:01:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-10-07 16:01:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 94. [2021-10-07 16:01:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 2.7051282051282053) internal successors, (211), 93 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 211 transitions. [2021-10-07 16:01:06,850 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 211 transitions. Word has length 4 [2021-10-07 16:01:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:06,851 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 211 transitions. [2021-10-07 16:01:06,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 211 transitions. [2021-10-07 16:01:06,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:01:06,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:06,852 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:06,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:07,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:07,065 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:07,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:07,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1123860655, now seen corresponding path program 1 times [2021-10-07 16:01:07,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:07,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745710988] [2021-10-07 16:01:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:07,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:07,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:07,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:01:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:07,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:01:07,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:07,170 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 16:01:07,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 16:01:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:07,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:07,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:07,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745710988] [2021-10-07 16:01:07,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745710988] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:07,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:07,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 16:01:07,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904551054] [2021-10-07 16:01:07,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:07,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:07,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:07,251 INFO L87 Difference]: Start difference. First operand 94 states and 211 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:07,367 INFO L93 Difference]: Finished difference Result 62 states and 133 transitions. [2021-10-07 16:01:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:01:07,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 16:01:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:07,369 INFO L225 Difference]: With dead ends: 62 [2021-10-07 16:01:07,370 INFO L226 Difference]: Without dead ends: 62 [2021-10-07 16:01:07,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:01:07,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-07 16:01:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-07 16:01:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 55 states have (on average 2.418181818181818) internal successors, (133), 61 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 133 transitions. [2021-10-07 16:01:07,375 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 133 transitions. Word has length 7 [2021-10-07 16:01:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:07,375 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 133 transitions. [2021-10-07 16:01:07,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 133 transitions. [2021-10-07 16:01:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:01:07,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:07,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:07,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:07,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:07,588 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:07,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1123860656, now seen corresponding path program 1 times [2021-10-07 16:01:07,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:07,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315487498] [2021-10-07 16:01:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:07,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:07,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:07,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:07,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:01:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:07,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:01:07,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:07,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:07,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:07,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315487498] [2021-10-07 16:01:07,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315487498] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:07,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:07,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:01:07,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364008692] [2021-10-07 16:01:07,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:01:07,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:01:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:01:07,815 INFO L87 Difference]: Start difference. First operand 62 states and 133 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:07,953 INFO L93 Difference]: Finished difference Result 87 states and 172 transitions. [2021-10-07 16:01:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:01:07,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 16:01:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:07,957 INFO L225 Difference]: With dead ends: 87 [2021-10-07 16:01:07,957 INFO L226 Difference]: Without dead ends: 87 [2021-10-07 16:01:07,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:01:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-07 16:01:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2021-10-07 16:01:07,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 72 states have (on average 2.2777777777777777) internal successors, (164), 78 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 164 transitions. [2021-10-07 16:01:07,963 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 164 transitions. Word has length 7 [2021-10-07 16:01:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:07,964 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 164 transitions. [2021-10-07 16:01:07,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:07,964 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 164 transitions. [2021-10-07 16:01:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:01:07,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:07,966 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:07,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:08,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:08,179 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:08,180 INFO L82 PathProgramCache]: Analyzing trace with hash -918895575, now seen corresponding path program 1 times [2021-10-07 16:01:08,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:08,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098665800] [2021-10-07 16:01:08,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:08,182 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:08,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:08,183 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:08,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:01:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:08,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:01:08,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:08,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:08,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:08,486 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:01:08,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:01:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:08,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:09,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:09,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098665800] [2021-10-07 16:01:09,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098665800] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:09,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:09,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:01:09,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324731209] [2021-10-07 16:01:09,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:01:09,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:01:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:01:09,905 INFO L87 Difference]: Start difference. First operand 79 states and 164 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:11,930 INFO L93 Difference]: Finished difference Result 145 states and 290 transitions. [2021-10-07 16:01:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:01:11,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:01:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:11,932 INFO L225 Difference]: With dead ends: 145 [2021-10-07 16:01:11,933 INFO L226 Difference]: Without dead ends: 145 [2021-10-07 16:01:11,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1632.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:01:11,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-07 16:01:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 100. [2021-10-07 16:01:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 2.3118279569892475) internal successors, (215), 99 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 215 transitions. [2021-10-07 16:01:11,939 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 215 transitions. Word has length 8 [2021-10-07 16:01:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:11,940 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 215 transitions. [2021-10-07 16:01:11,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 215 transitions. [2021-10-07 16:01:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:01:11,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:11,941 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:01:11,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:12,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:12,155 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2110848244, now seen corresponding path program 2 times [2021-10-07 16:01:12,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:12,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208228950] [2021-10-07 16:01:12,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:01:12,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:12,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:12,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:12,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:01:12,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:01:12,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:01:12,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:01:12,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:12,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:12,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:12,435 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:01:12,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:01:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:12,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:14,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:14,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208228950] [2021-10-07 16:01:14,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208228950] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:14,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:14,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:01:14,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71852944] [2021-10-07 16:01:14,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:01:14,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:14,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:01:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:01:14,464 INFO L87 Difference]: Start difference. First operand 100 states and 215 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:21,747 INFO L93 Difference]: Finished difference Result 659 states and 1418 transitions. [2021-10-07 16:01:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:01:21,749 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:01:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:21,755 INFO L225 Difference]: With dead ends: 659 [2021-10-07 16:01:21,755 INFO L226 Difference]: Without dead ends: 659 [2021-10-07 16:01:21,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6031.1ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:01:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-10-07 16:01:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 108. [2021-10-07 16:01:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 101 states have (on average 2.287128712871287) internal successors, (231), 107 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 231 transitions. [2021-10-07 16:01:21,768 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 231 transitions. Word has length 8 [2021-10-07 16:01:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:21,768 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 231 transitions. [2021-10-07 16:01:21,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 231 transitions. [2021-10-07 16:01:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:01:21,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:21,770 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:21,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:21,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:21,984 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:21,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:21,985 INFO L82 PathProgramCache]: Analyzing trace with hash -467773712, now seen corresponding path program 2 times [2021-10-07 16:01:21,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:21,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900492823] [2021-10-07 16:01:21,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:01:21,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:21,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:21,988 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:21,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:01:22,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:01:22,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:01:22,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:01:22,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:22,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:22,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:22,267 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:01:22,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:01:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:01:22,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:01:23,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:23,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900492823] [2021-10-07 16:01:23,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900492823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:23,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:23,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:01:23,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511088154] [2021-10-07 16:01:23,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:01:23,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:23,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:01:23,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:01:23,806 INFO L87 Difference]: Start difference. First operand 108 states and 231 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:24,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:24,029 INFO L93 Difference]: Finished difference Result 84 states and 173 transitions. [2021-10-07 16:01:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:01:24,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 11 [2021-10-07 16:01:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:24,033 INFO L225 Difference]: With dead ends: 84 [2021-10-07 16:01:24,033 INFO L226 Difference]: Without dead ends: 84 [2021-10-07 16:01:24,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 273.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:01:24,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-07 16:01:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 63. [2021-10-07 16:01:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 2.0) internal successors, (122), 62 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 122 transitions. [2021-10-07 16:01:24,037 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 122 transitions. Word has length 11 [2021-10-07 16:01:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 122 transitions. [2021-10-07 16:01:24,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 122 transitions. [2021-10-07 16:01:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:01:24,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:24,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:24,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:24,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:24,240 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:24,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1187988652, now seen corresponding path program 1 times [2021-10-07 16:01:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:24,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178368862] [2021-10-07 16:01:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:24,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:24,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:24,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:24,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:01:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:24,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:01:24,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:24,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:24,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178368862] [2021-10-07 16:01:24,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178368862] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:24,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:24,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:24,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933861347] [2021-10-07 16:01:24,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:24,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:24,498 INFO L87 Difference]: Start difference. First operand 63 states and 122 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:24,515 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2021-10-07 16:01:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:01:24,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:01:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:24,516 INFO L225 Difference]: With dead ends: 76 [2021-10-07 16:01:24,517 INFO L226 Difference]: Without dead ends: 42 [2021-10-07 16:01:24,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-07 16:01:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-07 16:01:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 2.0) internal successors, (80), 41 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 80 transitions. [2021-10-07 16:01:24,520 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 80 transitions. Word has length 13 [2021-10-07 16:01:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:24,520 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 80 transitions. [2021-10-07 16:01:24,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 80 transitions. [2021-10-07 16:01:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:01:24,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:24,522 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:24,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:24,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:24,734 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:24,735 INFO L82 PathProgramCache]: Analyzing trace with hash -962913525, now seen corresponding path program 1 times [2021-10-07 16:01:24,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:24,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30471195] [2021-10-07 16:01:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:24,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:24,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:24,738 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:24,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:01:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:24,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:01:24,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:25,034 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 10 treesize of output 8 [2021-10-07 16:01:25,071 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 8 treesize of output 6 [2021-10-07 16:01:25,245 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:01:25,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 108 treesize of output 38 [2021-10-07 16:01:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:01:25,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:25,856 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 16:01:25,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 286 treesize of output 194 [2021-10-07 16:01:25,862 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 194 treesize of output 190 [2021-10-07 16:01:25,866 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 190 treesize of output 186 [2021-10-07 16:01:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:01:56,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:56,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30471195] [2021-10-07 16:01:56,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30471195] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:56,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:56,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 16:01:56,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735762781] [2021-10-07 16:01:56,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:01:56,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:01:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:01:56,486 INFO L87 Difference]: Start difference. First operand 42 states and 80 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:56,940 INFO L93 Difference]: Finished difference Result 55 states and 109 transitions. [2021-10-07 16:01:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:01:56,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:01:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:56,943 INFO L225 Difference]: With dead ends: 55 [2021-10-07 16:01:56,943 INFO L226 Difference]: Without dead ends: 46 [2021-10-07 16:01:56,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1287.7ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:01:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-07 16:01:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-07 16:01:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 90 transitions. [2021-10-07 16:01:56,946 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 90 transitions. Word has length 16 [2021-10-07 16:01:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:56,946 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 90 transitions. [2021-10-07 16:01:56,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:56,947 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 90 transitions. [2021-10-07 16:01:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:01:56,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:56,948 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-07 16:01:56,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:57,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:01:57,157 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:01:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:57,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1424131724, now seen corresponding path program 3 times [2021-10-07 16:01:57,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:57,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071042310] [2021-10-07 16:01:57,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:01:57,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:57,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:57,161 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:01:57,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:01:57,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 16:01:57,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:01:57,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:01:57,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:57,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:57,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:57,700 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:01:57,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:01:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:58,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:02:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:02:03,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:02:03,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071042310] [2021-10-07 16:02:03,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071042310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:02:03,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:02:03,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 16:02:03,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066072853] [2021-10-07 16:02:03,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 16:02:03,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:02:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 16:02:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:02:03,622 INFO L87 Difference]: Start difference. First operand 46 states and 90 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:16,134 WARN L207 SmtUtils]: Spent 9.41 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 16:02:24,781 WARN L207 SmtUtils]: Spent 7.92 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 16:02:32,704 WARN L207 SmtUtils]: Spent 7.07 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 16:02:38,714 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-07 16:03:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:01,507 INFO L93 Difference]: Finished difference Result 874 states and 1774 transitions. [2021-10-07 16:03:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:03:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:03:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:01,516 INFO L225 Difference]: With dead ends: 874 [2021-10-07 16:03:01,516 INFO L226 Difference]: Without dead ends: 874 [2021-10-07 16:03:01,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 54818.0ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:03:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-07 16:03:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 62. [2021-10-07 16:03:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 2.033333333333333) internal successors, (122), 61 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 122 transitions. [2021-10-07 16:03:01,528 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 122 transitions. Word has length 16 [2021-10-07 16:03:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:01,528 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 122 transitions. [2021-10-07 16:03:01,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 122 transitions. [2021-10-07 16:03:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:03:01,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:01,529 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:01,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:01,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:03:01,743 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:03:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:01,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1602655219, now seen corresponding path program 2 times [2021-10-07 16:03:01,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:01,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662565239] [2021-10-07 16:03:01,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:03:01,745 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:01,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:01,747 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:03:01,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:03:01,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:03:01,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:03:01,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:03:01,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:02,199 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 75 treesize of output 73 [2021-10-07 16:03:02,210 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:03:02,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 30 [2021-10-07 16:03:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:02,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:02,547 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 81 treesize of output 79 [2021-10-07 16:03:02,563 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:03:02,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 35 [2021-10-07 16:03:02,608 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:03:02,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 44 [2021-10-07 16:03:02,618 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 34 treesize of output 32 [2021-10-07 16:03:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:03,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:03,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662565239] [2021-10-07 16:03:03,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662565239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:03,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:03,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-10-07 16:03:03,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861990084] [2021-10-07 16:03:03,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:03:03,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:03:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:03:03,196 INFO L87 Difference]: Start difference. First operand 62 states and 122 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:03,547 INFO L93 Difference]: Finished difference Result 81 states and 151 transitions. [2021-10-07 16:03:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:03:03,548 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:03:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:03,549 INFO L225 Difference]: With dead ends: 81 [2021-10-07 16:03:03,549 INFO L226 Difference]: Without dead ends: 62 [2021-10-07 16:03:03,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 677.5ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:03:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-07 16:03:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-07 16:03:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 61 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 121 transitions. [2021-10-07 16:03:03,552 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 121 transitions. Word has length 17 [2021-10-07 16:03:03,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:03,552 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 121 transitions. [2021-10-07 16:03:03,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 121 transitions. [2021-10-07 16:03:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:03:03,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:03,553 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:03,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:03,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:03:03,767 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:03:03,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash -9950138, now seen corresponding path program 3 times [2021-10-07 16:03:03,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:03,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286145494] [2021-10-07 16:03:03,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:03:03,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:03,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:03,771 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:03:03,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:03:04,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:03:04,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:03:04,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:03:04,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:04,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:04,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:04,267 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:03:04,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 16:03:04,696 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 16:03:04,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 89 [2021-10-07 16:03:04,709 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:03:04,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 53 [2021-10-07 16:03:04,718 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 44 treesize of output 42 [2021-10-07 16:03:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:04,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:05,222 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:03:05,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 359 treesize of output 219 [2021-10-07 16:03:05,230 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 219 treesize of output 215 [2021-10-07 16:03:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:08,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:08,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286145494] [2021-10-07 16:03:08,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286145494] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:08,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:08,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-10-07 16:03:08,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415359706] [2021-10-07 16:03:08,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:03:08,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:03:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:03:08,386 INFO L87 Difference]: Start difference. First operand 62 states and 121 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 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) [2021-10-07 16:03:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:12,750 INFO L93 Difference]: Finished difference Result 161 states and 316 transitions. [2021-10-07 16:03:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 16:03:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 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 [2021-10-07 16:03:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:12,753 INFO L225 Difference]: With dead ends: 161 [2021-10-07 16:03:12,754 INFO L226 Difference]: Without dead ends: 153 [2021-10-07 16:03:12,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3187.6ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:03:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-07 16:03:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 107. [2021-10-07 16:03:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 2.219047619047619) internal successors, (233), 106 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 233 transitions. [2021-10-07 16:03:12,760 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 233 transitions. Word has length 18 [2021-10-07 16:03:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:12,760 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 233 transitions. [2021-10-07 16:03:12,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 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) [2021-10-07 16:03:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 233 transitions. [2021-10-07 16:03:12,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:03:12,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:12,762 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:12,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:03:12,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:03:12,975 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 22 more)] === [2021-10-07 16:03:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:12,976 INFO L82 PathProgramCache]: Analyzing trace with hash 294726290, now seen corresponding path program 4 times [2021-10-07 16:03:12,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:12,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492855206] [2021-10-07 16:03:12,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:03:12,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:12,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:12,979 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:03:12,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:03:13,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:03:13,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:03:13,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:03:13,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:13,818 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 8 treesize of output 6 [2021-10-07 16:03:13,875 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 21 treesize of output 17 [2021-10-07 16:03:14,659 INFO L354 Elim1Store]: treesize reduction 497, result has 0.2 percent of original size [2021-10-07 16:03:14,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 218 treesize of output 74 [2021-10-07 16:03:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:03:15,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:20,901 INFO L354 Elim1Store]: treesize reduction 1907, result has 9.9 percent of original size [2021-10-07 16:03:20,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 718 treesize of output 574 [2021-10-07 16:03:20,914 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 574 treesize of output 566 [2021-10-07 16:03:20,926 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 566 treesize of output 558 Received shutdown request... [2021-10-07 16:14:23,483 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-07 16:14:23,485 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:14:23,486 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:14:23,486 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:14:23,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 16:14:23,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:14:23,688 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. [2021-10-07 16:14:23,690 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:14:23,691 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:14:23,691 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:14:23,691 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:14:23,692 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:14:23,692 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:14:23,692 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:14:23,692 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:14:23,692 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:14:23,692 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:14:23,692 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:14:23,693 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:14:23,694 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:14:23,694 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:14:23,694 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:14:23,694 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:14:23,694 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:14:23,694 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:14:23,701 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:14:23,701 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:14:23,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:14:23 BasicIcfg [2021-10-07 16:14:23,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:14:23,704 INFO L168 Benchmark]: Toolchain (without parser) took 827698.17 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 124.9 MB in the beginning and 52.8 MB in the end (delta: 72.1 MB). Peak memory consumption was 117.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:23,704 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:14:23,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 111.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:23,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.34 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 109.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:23,705 INFO L168 Benchmark]: Boogie Preprocessor took 65.34 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 108.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:23,705 INFO L168 Benchmark]: RCFGBuilder took 909.09 ms. Allocated memory is still 151.0 MB. Free memory was 108.2 MB in the beginning and 127.5 MB in the end (delta: -19.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:23,706 INFO L168 Benchmark]: TraceAbstraction took 826286.06 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 127.0 MB in the beginning and 52.8 MB in the end (delta: 74.2 MB). Peak memory consumption was 118.3 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:23,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 369.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 111.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.34 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 109.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.34 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 108.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 909.09 ms. Allocated memory is still 151.0 MB. Free memory was 108.2 MB in the beginning and 127.5 MB in the end (delta: -19.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 826286.06 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 127.0 MB in the beginning and 52.8 MB in the end (delta: 74.2 MB). Peak memory consumption was 118.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21155.7ms, 159 PlacesBefore, 40 PlacesAfterwards, 166 TransitionsBefore, 36 TransitionsAfterwards, 3100 CoEnabledTransitionPairs, 7 FixpointIterations, 80 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 17 ConcurrentYvCompositions, 11 ChoiceCompositions, 194 TotalNumberOfCompositions, 3872 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3500, positive: 3462, positive conditional: 0, positive unconditional: 3462, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2103, positive: 2082, positive conditional: 0, positive unconditional: 2082, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2103, positive: 2079, positive conditional: 0, positive unconditional: 2079, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 647, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 613, negative conditional: 0, negative unconditional: 613, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3500, positive: 1380, positive conditional: 0, positive unconditional: 1380, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 2103, unknown conditional: 0, unknown unconditional: 2103] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 211 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 826018.5ms, OverallIterations: 19, TraceHistogramMax: 14, EmptinessCheckTime: 21.2ms, AutomataDifference: 75445.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21243.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 436 SDtfs, 5366 SDslu, 2511 SDs, 0 SdLazy, 2705 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16551.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 69320.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=0, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 214.2ms AutomataMinimizationTime, 18 MinimizatonAttempts, 2121 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 187.7ms SsaConstructionTime, 956.9ms SatisfiabilityAnalysisTime, 52243.5ms InterpolantComputationTime, 145 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 254 ConstructedInterpolants, 51 QuantifiedInterpolants, 5832 SizeOfPredicates, 157 NumberOfNonLiveVariables, 1235 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 36 InterpolantComputations, 22 PerfectInterpolantSequences, 31/310 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown