/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/unroll-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:44:06,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:44:06,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:44:06,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 16:44:06,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 16:44:06,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 16:44:06,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 16:44:06,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 16:44:06,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 16:44:06,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 16:44:06,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 16:44:06,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 16:44:06,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:44:06,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:44:06,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:44:06,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:44:06,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:44:06,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:44:06,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:44:06,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:44:06,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:44:06,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:44:06,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:44:06,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:44:06,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-07 16:44:06,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-07 16:44:06,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-07 16:44:06,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-07 16:44:06,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-07 16:44:06,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-07 16:44:06,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:44:06,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:44:06,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:44:06,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:44:06,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:44:06,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:44:06,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:44:06,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:44:06,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:44:06,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:44:06,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:44:06,340 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 16:44:06,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:44:06,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:44:06,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:44:06,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:44:06,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:44:06,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:44:06,371 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:44:06,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:44:06,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:44:06,372 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:44:06,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:44:06,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:44:06,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:44:06,373 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:44:06,373 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:44:06,373 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:44:06,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:44:06,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:44:06,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:44:06,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:44:06,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:44:06,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:44:06,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:44:06,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:44:06,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:44:06,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:44:06,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:44:06,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:44:06,376 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:44:06,376 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:44:06,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:44:06,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:44:06,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:44:06,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:44:06,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:44:06,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:44:06,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:44:06,766 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:44:06,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-3.wvr.c [2021-10-07 16:44:06,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7201abab/c8b442843e6943dab3527996460654bc/FLAGf1825321d [2021-10-07 16:44:07,497 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:44:07,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/unroll-3.wvr.c [2021-10-07 16:44:07,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7201abab/c8b442843e6943dab3527996460654bc/FLAGf1825321d [2021-10-07 16:44:07,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7201abab/c8b442843e6943dab3527996460654bc [2021-10-07 16:44:07,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:44:07,859 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:44:07,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:44:07,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:44:07,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:44:07,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:44:07" (1/1) ... [2021-10-07 16:44:07,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22408bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:07, skipping insertion in model container [2021-10-07 16:44:07,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:44:07" (1/1) ... [2021-10-07 16:44:07,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:44:07,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:44:08,087 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/unroll-3.wvr.c[2512,2525] [2021-10-07 16:44:08,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:44:08,112 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:44:08,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:44:08,134 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/unroll-3.wvr.c[2512,2525] [2021-10-07 16:44:08,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:44:08,147 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:44:08,200 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/unroll-3.wvr.c[2512,2525] [2021-10-07 16:44:08,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:44:08,237 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:44:08,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08 WrapperNode [2021-10-07 16:44:08,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:44:08,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:44:08,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:44:08,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:44:08,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:44:08,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:44:08,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:44:08,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:44:08,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:44:08,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:44:08,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:44:08,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:44:08,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (1/1) ... [2021-10-07 16:44:08,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:44:08,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:44:08,486 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 16:44:08,515 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 16:44:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:44:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:44:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:44:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:44:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:44:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:44:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:44:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:44:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:44:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:44:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:44:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:44:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:44:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:44:08,583 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 16:44:10,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:44:10,223 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-07 16:44:10,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:44:10 BoogieIcfgContainer [2021-10-07 16:44:10,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:44:10,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:44:10,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:44:10,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:44:10,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:44:07" (1/3) ... [2021-10-07 16:44:10,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78459047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:44:10, skipping insertion in model container [2021-10-07 16:44:10,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:44:08" (2/3) ... [2021-10-07 16:44:10,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78459047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:44:10, skipping insertion in model container [2021-10-07 16:44:10,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:44:10" (3/3) ... [2021-10-07 16:44:10,234 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2021-10-07 16:44:10,240 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:44:10,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-07 16:44:10,241 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:44:10,272 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,273 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,273 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,273 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,274 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,274 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,274 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,274 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,274 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,275 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,275 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,275 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,277 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,278 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,279 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,279 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,280 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,280 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,280 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,280 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,281 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,281 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,281 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,281 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,281 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,282 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,282 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,283 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,283 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,284 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,284 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,284 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,284 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,285 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,285 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,285 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,285 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,286 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,286 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,288 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,288 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,288 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,288 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,292 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,292 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,292 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,292 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,293 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,293 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,295 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,296 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:44:10,301 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:44:10,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:44:10,357 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 16:44:10,357 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-07 16:44:10,377 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:44:10,390 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 123 transitions, 262 flow [2021-10-07 16:44:10,394 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 123 transitions, 262 flow [2021-10-07 16:44:10,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 123 transitions, 262 flow [2021-10-07 16:44:10,462 INFO L129 PetriNetUnfolder]: 9/121 cut-off events. [2021-10-07 16:44:10,463 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:44:10,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 121 events. 9/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 125 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2021-10-07 16:44:10,476 INFO L116 LiptonReduction]: Number of co-enabled transitions 640 [2021-10-07 16:44:27,281 INFO L131 LiptonReduction]: Checked pairs total: 963 [2021-10-07 16:44:27,281 INFO L133 LiptonReduction]: Total number of compositions: 126 [2021-10-07 16:44:27,293 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 37 transitions, 90 flow [2021-10-07 16:44:27,314 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 186 states, 98 states have (on average 4.683673469387755) internal successors, (459), 185 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 16:44:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 98 states have (on average 4.683673469387755) internal successors, (459), 185 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 16:44:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:44:27,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:27,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:44:27,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:27,330 INFO L82 PathProgramCache]: Analyzing trace with hash 18451, now seen corresponding path program 1 times [2021-10-07 16:44:27,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:27,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452602686] [2021-10-07 16:44:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:27,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:27,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:27,346 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 16:44:27,349 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 16:44:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:27,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:27,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:27,837 INFO L354 Elim1Store]: treesize reduction 151, result has 21.8 percent of original size [2021-10-07 16:44:27,838 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 46 treesize of output 74 [2021-10-07 16:44:27,858 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 96 treesize of output 94 [2021-10-07 16:44:28,354 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 16:44:28,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:28,391 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 16:44:28,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:28,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452602686] [2021-10-07 16:44:28,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452602686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:28,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:28,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:44:28,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918704564] [2021-10-07 16:44:28,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:28,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:28,420 INFO L87 Difference]: Start difference. First operand has 186 states, 98 states have (on average 4.683673469387755) internal successors, (459), 185 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:28,626 INFO L93 Difference]: Finished difference Result 120 states and 281 transitions. [2021-10-07 16:44:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:28,628 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 16:44:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:28,639 INFO L225 Difference]: With dead ends: 120 [2021-10-07 16:44:28,640 INFO L226 Difference]: Without dead ends: 120 [2021-10-07 16:44:28,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-07 16:44:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-10-07 16:44:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 71 states have (on average 3.9577464788732395) internal successors, (281), 119 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 281 transitions. [2021-10-07 16:44:28,691 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 281 transitions. Word has length 2 [2021-10-07 16:44:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:28,692 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 281 transitions. [2021-10-07 16:44:28,692 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 16:44:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 281 transitions. [2021-10-07 16:44:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:44:28,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:28,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:44:28,706 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 16:44:28,905 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 16:44:28,906 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:28,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:28,911 INFO L82 PathProgramCache]: Analyzing trace with hash 18389, now seen corresponding path program 1 times [2021-10-07 16:44:28,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:28,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594936587] [2021-10-07 16:44:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:28,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:28,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:28,917 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 16:44:28,958 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 16:44:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:28,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:44:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:29,141 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:44:29,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 16:44:29,564 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 16:44:29,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:29,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:29,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594936587] [2021-10-07 16:44:29,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594936587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:29,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:29,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:44:29,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92042984] [2021-10-07 16:44:29,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:44:29,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:44:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:44:29,576 INFO L87 Difference]: Start difference. First operand 120 states and 281 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:29,739 INFO L93 Difference]: Finished difference Result 119 states and 280 transitions. [2021-10-07 16:44:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:29,740 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 16:44:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:29,744 INFO L225 Difference]: With dead ends: 119 [2021-10-07 16:44:29,744 INFO L226 Difference]: Without dead ends: 119 [2021-10-07 16:44:29,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:44:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-07 16:44:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-07 16:44:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 71 states have (on average 3.943661971830986) internal successors, (280), 118 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 16:44:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 280 transitions. [2021-10-07 16:44:29,761 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 280 transitions. Word has length 2 [2021-10-07 16:44:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:29,761 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 280 transitions. [2021-10-07 16:44:29,761 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 16:44:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 280 transitions. [2021-10-07 16:44:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:44:29,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:29,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:44:29,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-07 16:44:29,973 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 16:44:29,974 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:29,976 INFO L82 PathProgramCache]: Analyzing trace with hash 18453, now seen corresponding path program 1 times [2021-10-07 16:44:29,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:29,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294090738] [2021-10-07 16:44:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:29,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:29,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:29,978 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 16:44:29,979 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 16:44:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:30,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:44:30,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:30,207 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:44:30,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 97 [2021-10-07 16:44:31,877 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 16:44:31,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:31,888 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 16:44:31,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:31,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294090738] [2021-10-07 16:44:31,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294090738] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:31,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:31,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:44:31,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164518137] [2021-10-07 16:44:31,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:31,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:31,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:31,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:31,892 INFO L87 Difference]: Start difference. First operand 119 states and 280 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 16:44:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:32,055 INFO L93 Difference]: Finished difference Result 94 states and 207 transitions. [2021-10-07 16:44:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:32,056 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 16:44:32,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:32,057 INFO L225 Difference]: With dead ends: 94 [2021-10-07 16:44:32,057 INFO L226 Difference]: Without dead ends: 94 [2021-10-07 16:44:32,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-07 16:44:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-07 16:44:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 3.338709677419355) internal successors, (207), 93 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 16:44:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 207 transitions. [2021-10-07 16:44:32,068 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 207 transitions. Word has length 2 [2021-10-07 16:44:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:32,068 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 207 transitions. [2021-10-07 16:44:32,068 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 16:44:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 207 transitions. [2021-10-07 16:44:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:44:32,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:32,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:44:32,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-07 16:44:32,283 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 16:44:32,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:32,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash 18390, now seen corresponding path program 1 times [2021-10-07 16:44:32,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:32,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932705680] [2021-10-07 16:44:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:32,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:32,288 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 16:44:32,289 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 16:44:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:32,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:44:32,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:32,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:44:32,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:44:32,528 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 16:44:32,529 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 16:44:32,589 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 16:44:32,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:32,703 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 16:44:32,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:32,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932705680] [2021-10-07 16:44:32,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932705680] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:32,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:32,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:44:32,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944685670] [2021-10-07 16:44:32,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:32,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:32,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:32,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:32,706 INFO L87 Difference]: Start difference. First operand 94 states and 207 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 16:44:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:33,099 INFO L93 Difference]: Finished difference Result 187 states and 414 transitions. [2021-10-07 16:44:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:44:33,101 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 16:44:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:33,106 INFO L225 Difference]: With dead ends: 187 [2021-10-07 16:44:33,106 INFO L226 Difference]: Without dead ends: 187 [2021-10-07 16:44:33,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-07 16:44:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 96. [2021-10-07 16:44:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 3.296875) internal successors, (211), 95 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 16:44:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 211 transitions. [2021-10-07 16:44:33,137 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 211 transitions. Word has length 2 [2021-10-07 16:44:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:33,137 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 211 transitions. [2021-10-07 16:44:33,137 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 16:44:33,138 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 211 transitions. [2021-10-07 16:44:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:44:33,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:33,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:44:33,156 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 16:44:33,354 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 16:44:33,354 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:33,356 INFO L82 PathProgramCache]: Analyzing trace with hash 17745763, now seen corresponding path program 1 times [2021-10-07 16:44:33,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:33,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755160608] [2021-10-07 16:44:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:33,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:33,359 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 16:44:33,361 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 16:44:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:33,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:44:33,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:33,554 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:44:33,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 16:44:33,900 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 16:44:33,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:33,911 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 16:44:33,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:33,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755160608] [2021-10-07 16:44:33,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755160608] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:33,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:33,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 16:44:33,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594682667] [2021-10-07 16:44:33,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:33,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:33,914 INFO L87 Difference]: Start difference. First operand 96 states and 211 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 16:44:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:34,079 INFO L93 Difference]: Finished difference Result 70 states and 150 transitions. [2021-10-07 16:44:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:44:34,080 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 4 [2021-10-07 16:44:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:34,081 INFO L225 Difference]: With dead ends: 70 [2021-10-07 16:44:34,081 INFO L226 Difference]: Without dead ends: 70 [2021-10-07 16:44:34,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:44:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-07 16:44:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-07 16:44:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 3.061224489795918) internal successors, (150), 69 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 16:44:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 150 transitions. [2021-10-07 16:44:34,095 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 150 transitions. Word has length 4 [2021-10-07 16:44:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:34,096 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 150 transitions. [2021-10-07 16:44:34,096 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 16:44:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 150 transitions. [2021-10-07 16:44:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:44:34,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:34,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:44:34,108 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 16:44:34,306 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 16:44:34,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:34,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:34,308 INFO L82 PathProgramCache]: Analyzing trace with hash 17745819, now seen corresponding path program 1 times [2021-10-07 16:44:34,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:34,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680061597] [2021-10-07 16:44:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:34,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:34,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:34,311 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 16:44:34,312 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 16:44:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:34,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:44:34,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:34,511 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 16:44:34,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 16:44:34,897 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 16:44:34,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:34,907 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 16:44:34,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:34,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680061597] [2021-10-07 16:44:34,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680061597] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:34,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:34,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:44:34,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930376065] [2021-10-07 16:44:34,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:44:34,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:44:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:44:34,910 INFO L87 Difference]: Start difference. First operand 70 states and 150 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 16:44:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:35,051 INFO L93 Difference]: Finished difference Result 62 states and 134 transitions. [2021-10-07 16:44:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:35,052 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 16:44:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:35,053 INFO L225 Difference]: With dead ends: 62 [2021-10-07 16:44:35,054 INFO L226 Difference]: Without dead ends: 62 [2021-10-07 16:44:35,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:44:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-07 16:44:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-07 16:44:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 2.851063829787234) internal successors, (134), 61 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 16:44:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 134 transitions. [2021-10-07 16:44:35,058 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 134 transitions. Word has length 4 [2021-10-07 16:44:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:35,059 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 134 transitions. [2021-10-07 16:44:35,059 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 16:44:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 134 transitions. [2021-10-07 16:44:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:44:35,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:35,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:44:35,076 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 16:44:35,269 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 16:44:35,270 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash 17745820, now seen corresponding path program 1 times [2021-10-07 16:44:35,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:35,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616211978] [2021-10-07 16:44:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:35,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:35,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:35,273 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 16:44:35,274 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 16:44:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:35,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:44:35,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:35,449 INFO L354 Elim1Store]: treesize reduction 155, result has 19.7 percent of original size [2021-10-07 16:44:35,449 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 41 treesize of output 65 [2021-10-07 16:44:35,456 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 687 treesize of output 655 [2021-10-07 16:44:36,019 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 16:44:36,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:36,079 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 16:44:36,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:36,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616211978] [2021-10-07 16:44:36,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616211978] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:36,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:36,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:44:36,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034505884] [2021-10-07 16:44:36,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:36,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:36,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:36,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:36,082 INFO L87 Difference]: Start difference. First operand 62 states and 134 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 16:44:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:36,225 INFO L93 Difference]: Finished difference Result 54 states and 118 transitions. [2021-10-07 16:44:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:36,226 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 16:44:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:36,226 INFO L225 Difference]: With dead ends: 54 [2021-10-07 16:44:36,227 INFO L226 Difference]: Without dead ends: 54 [2021-10-07 16:44:36,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-07 16:44:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-07 16:44:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 16:44:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 118 transitions. [2021-10-07 16:44:36,230 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 118 transitions. Word has length 4 [2021-10-07 16:44:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:36,230 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 118 transitions. [2021-10-07 16:44:36,230 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 16:44:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 118 transitions. [2021-10-07 16:44:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:44:36,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:36,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:44:36,240 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 16:44:36,432 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 16:44:36,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 26 more)] === [2021-10-07 16:44:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 17745762, now seen corresponding path program 1 times [2021-10-07 16:44:36,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:36,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568808557] [2021-10-07 16:44:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:36,435 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:36,437 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 16:44:36,439 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 16:44:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 16:44:36,508 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-07 16:44:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 16:44:36,579 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-07 16:44:36,580 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-07 16:44:36,581 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:44:36,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:44:36,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:44:36,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:44:36,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:44:36,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:44:36,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:44:36,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATION [2021-10-07 16:44:36,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATION [2021-10-07 16:44:36,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:44:36,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:44:36,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:44:36,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:44:36,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:44:36,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:44:36,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:44:36,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:44:36,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:44:36,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:44:36,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:44:36,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:44:36,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:44:36,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:44:36,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:44:36,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:44:36,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:44:36,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:44:36,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:44:36,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATION [2021-10-07 16:44:36,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATION [2021-10-07 16:44:36,604 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 16:44:36,795 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 16:44:36,803 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:44:36,803 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:44:36,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:44:36 BasicIcfg [2021-10-07 16:44:36,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:44:36,843 INFO L168 Benchmark]: Toolchain (without parser) took 28996.52 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 128.5 MB in the beginning and 94.5 MB in the end (delta: 34.0 MB). Peak memory consumption was 111.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:36,843 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:44:36,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.48 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 115.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:36,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.19 ms. Allocated memory is still 154.1 MB. Free memory was 115.3 MB in the beginning and 113.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:36,845 INFO L168 Benchmark]: Boogie Preprocessor took 90.86 ms. Allocated memory is still 154.1 MB. Free memory was 113.3 MB in the beginning and 111.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:36,846 INFO L168 Benchmark]: RCFGBuilder took 1798.23 ms. Allocated memory is still 154.1 MB. Free memory was 111.5 MB in the beginning and 107.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:36,846 INFO L168 Benchmark]: TraceAbstraction took 26614.14 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 106.7 MB in the beginning and 94.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 88.8 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:36,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.48 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 115.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.19 ms. Allocated memory is still 154.1 MB. Free memory was 115.3 MB in the beginning and 113.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.86 ms. Allocated memory is still 154.1 MB. Free memory was 113.3 MB in the beginning and 111.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1798.23 ms. Allocated memory is still 154.1 MB. Free memory was 111.5 MB in the beginning and 107.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26614.14 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 106.7 MB in the beginning and 94.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 88.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16887.5ms, 121 PlacesBefore, 41 PlacesAfterwards, 123 TransitionsBefore, 37 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 7 FixpointIterations, 78 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 126 TotalNumberOfCompositions, 963 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 941, positive: 929, positive conditional: 0, positive unconditional: 929, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 312, positive: 310, positive conditional: 0, positive unconditional: 310, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 312, positive: 310, positive conditional: 0, positive unconditional: 310, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 192, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 192, negative conditional: 0, negative unconditional: 192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 941, positive: 619, positive conditional: 0, positive unconditional: 619, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 312, unknown conditional: 0, unknown unconditional: 312] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 51]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L41] 0 int *f; [L42] 0 int x1, x2, size; [L43] 0 unsigned int i1, i2, n; [L77] 0 pthread_t t1, t2; [L80] 0 n = __VERIFIER_nondet_uint() [L81] 0 size = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L100] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L101] 0 int i = 0; VAL [f={0:0}, i1=0, i2=0, size=0, x1=0, x2=0] [L101] COND FALSE 0 !(i < size) [L104] 0 return arr; [L82] 0 f = create_fresh_int_array(size) [L85] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [f={1:0}, i1=0, i2=0, size=0, x1=0, x2=0] [L49] COND TRUE 1 i1 < 3 * n [L51] 1 f[x1] - UnprovableResult [Line: 51]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 102]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 102]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 135 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 26453.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 15.1ms, AutomataDifference: 1439.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16957.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 80 SDtfs, 269 SDslu, 11 SDs, 0 SdLazy, 113 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1170.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 316.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 106.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 91 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 70.2ms SsaConstructionTime, 201.0ms SatisfiabilityAnalysisTime, 5552.7ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 26 ConstructedInterpolants, 5 QuantifiedInterpolants, 411 SizeOfPredicates, 35 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2021-10-07 16:44:36,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...