/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20/prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:32:07,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:32:07,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:32:07,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 21:32:07,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 21:32:07,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 21:32:07,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 21:32:07,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 21:32:07,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 21:32:07,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 21:32:07,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 21:32:07,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 21:32:07,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:32:07,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:32:07,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:32:07,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:32:07,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:32:07,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:32:07,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:32:07,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:32:07,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:32:07,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:32:07,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:32:07,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:32:07,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-06 21:32:07,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-06 21:32:07,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-06 21:32:07,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-06 21:32:07,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-06 21:32:07,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-06 21:32:07,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:32:07,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:32:07,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:32:07,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:32:07,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:32:07,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:32:07,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:32:07,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:32:07,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:32:07,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:32:07,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:32:07,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:32:07,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:32:07,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:32:07,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:32:07,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:32:07,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:32:07,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:32:07,650 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:32:07,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:32:07,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:32:07,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:32:07,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:32:07,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:32:07,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:32:07,654 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:32:07,654 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:32:07,655 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:32:07,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:32:07,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:32:07,656 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:32:07,656 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:32:07,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:32:07,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:32:07,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:32:07,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:32:07,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:32:07,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:32:07,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:32:07,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:32:07,659 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:32:07,659 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:32:07,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:32:07,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:32:07,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:32:08,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:32:08,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:32:08,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:32:08,152 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:32:08,154 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:32:08,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/prod-cons.wvr.c [2021-10-06 21:32:08,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2040aa97f/07c0dc65fb114aac96ca8aba34688426/FLAG271c486f1 [2021-10-06 21:32:08,881 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:32:08,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/prod-cons.wvr.c [2021-10-06 21:32:08,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2040aa97f/07c0dc65fb114aac96ca8aba34688426/FLAG271c486f1 [2021-10-06 21:32:09,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2040aa97f/07c0dc65fb114aac96ca8aba34688426 [2021-10-06 21:32:09,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:32:09,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:32:09,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:32:09,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:32:09,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:32:09,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7547a943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09, skipping insertion in model container [2021-10-06 21:32:09,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:32:09,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:32:09,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/prod-cons.wvr.c[2502,2515] [2021-10-06 21:32:09,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:32:09,525 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-06 21:32:09,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:32:09,548 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/prod-cons.wvr.c[2502,2515] [2021-10-06 21:32:09,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:32:09,559 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:32:09,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/prod-cons.wvr.c[2502,2515] [2021-10-06 21:32:09,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:32:09,614 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:32:09,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09 WrapperNode [2021-10-06 21:32:09,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:32:09,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:32:09,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:32:09,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:32:09,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:32:09,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:32:09,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:32:09,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:32:09,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:32:09,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:32:09,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:32:09,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:32:09,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (1/1) ... [2021-10-06 21:32:09,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:32:09,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:32:09,836 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) [2021-10-06 21:32:09,865 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 [2021-10-06 21:32:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:32:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:32:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:32:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:32:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:32:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:32:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:32:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:32:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:32:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:32:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-06 21:32:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:32:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:32:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:32:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:32:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:32:09,944 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:32:10,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:32:10,999 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-06 21:32:11,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:32:11 BoogieIcfgContainer [2021-10-06 21:32:11,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:32:11,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:32:11,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:32:11,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:32:11,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:32:09" (1/3) ... [2021-10-06 21:32:11,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a30f219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:32:11, skipping insertion in model container [2021-10-06 21:32:11,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:32:09" (2/3) ... [2021-10-06 21:32:11,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a30f219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:32:11, skipping insertion in model container [2021-10-06 21:32:11,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:32:11" (3/3) ... [2021-10-06 21:32:11,010 INFO L111 eAbstractionObserver]: Analyzing ICFG prod-cons.wvr.c [2021-10-06 21:32:11,016 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:32:11,016 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-06 21:32:11,016 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:32:11,053 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,054 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,054 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,054 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,055 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,055 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,055 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,055 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,056 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,056 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,057 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,057 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,058 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,058 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,058 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,058 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,059 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,059 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,059 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,059 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,060 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,060 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,060 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,060 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,061 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,061 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,061 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,061 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,062 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,062 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,062 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,063 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,063 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,063 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,063 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,064 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,064 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,064 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,064 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,064 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,065 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,065 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,065 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,065 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,066 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,066 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,066 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,066 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,067 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,071 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,071 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,072 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,072 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,072 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,072 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,072 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,076 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,076 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,079 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,079 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:32:11,087 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:32:11,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:32:11,147 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 [2021-10-06 21:32:11,148 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-10-06 21:32:11,167 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:32:11,180 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 145 transitions, 314 flow [2021-10-06 21:32:11,184 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 145 transitions, 314 flow [2021-10-06 21:32:11,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 145 transitions, 314 flow [2021-10-06 21:32:11,275 INFO L129 PetriNetUnfolder]: 10/142 cut-off events. [2021-10-06 21:32:11,276 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:32:11,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 10/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 108. Up to 3 conditions per place. [2021-10-06 21:32:11,286 INFO L116 LiptonReduction]: Number of co-enabled transitions 1252 [2021-10-06 21:32:32,065 INFO L131 LiptonReduction]: Checked pairs total: 3101 [2021-10-06 21:32:32,065 INFO L133 LiptonReduction]: Total number of compositions: 140 [2021-10-06 21:32:32,078 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 120 flow [2021-10-06 21:32:32,129 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:32:32,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:32,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:32:32,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:32:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:32,148 INFO L82 PathProgramCache]: Analyzing trace with hash 19224, now seen corresponding path program 1 times [2021-10-06 21:32:32,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:32,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003115214] [2021-10-06 21:32:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:32:32,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:32,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:32,170 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) [2021-10-06 21:32:32,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:32:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:32,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:32:32,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:32,892 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-06 21:32:32,893 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 5 case distinctions, treesize of input 70 treesize of output 104 [2021-10-06 21:32:32,919 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:32:32,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 273 [2021-10-06 21:32:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:36,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:36,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:36,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003115214] [2021-10-06 21:32:36,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003115214] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:36,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:36,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:32:36,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246145253] [2021-10-06 21:32:36,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:32:36,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:32:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:32:36,565 INFO L87 Difference]: Start difference. First operand has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 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) [2021-10-06 21:32:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:36,869 INFO L93 Difference]: Finished difference Result 516 states and 1511 transitions. [2021-10-06 21:32:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:32:36,872 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 [2021-10-06 21:32:36,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:36,895 INFO L225 Difference]: With dead ends: 516 [2021-10-06 21:32:36,895 INFO L226 Difference]: Without dead ends: 516 [2021-10-06 21:32:36,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:32:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-06 21:32:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2021-10-06 21:32:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 463 states have (on average 3.263498920086393) internal successors, (1511), 515 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1511 transitions. [2021-10-06 21:32:37,080 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1511 transitions. Word has length 2 [2021-10-06 21:32:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:37,083 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1511 transitions. [2021-10-06 21:32:37,083 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) [2021-10-06 21:32:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1511 transitions. [2021-10-06 21:32:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:32:37,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:37,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:32:37,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:37,298 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 [2021-10-06 21:32:37,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:32:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:37,301 INFO L82 PathProgramCache]: Analyzing trace with hash 19225, now seen corresponding path program 1 times [2021-10-06 21:32:37,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:37,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041615693] [2021-10-06 21:32:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:32:37,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:37,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:37,310 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) [2021-10-06 21:32:37,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:32:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:37,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:32:37,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:37,649 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-10-06 21:32:37,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 244 treesize of output 279 [2021-10-06 21:32:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:41,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:41,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:41,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041615693] [2021-10-06 21:32:41,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041615693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:41,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:41,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:32:41,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285526584] [2021-10-06 21:32:41,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:32:41,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:32:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:32:41,122 INFO L87 Difference]: Start difference. First operand 516 states and 1511 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) [2021-10-06 21:32:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:41,326 INFO L93 Difference]: Finished difference Result 431 states and 1216 transitions. [2021-10-06 21:32:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:32:41,329 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 [2021-10-06 21:32:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:41,338 INFO L225 Difference]: With dead ends: 431 [2021-10-06 21:32:41,338 INFO L226 Difference]: Without dead ends: 431 [2021-10-06 21:32:41,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:32:41,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-10-06 21:32:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-10-06 21:32:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 388 states have (on average 3.134020618556701) internal successors, (1216), 430 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1216 transitions. [2021-10-06 21:32:41,371 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1216 transitions. Word has length 2 [2021-10-06 21:32:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:41,372 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1216 transitions. [2021-10-06 21:32:41,372 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) [2021-10-06 21:32:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1216 transitions. [2021-10-06 21:32:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:32:41,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:41,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:32:41,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:41,591 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 [2021-10-06 21:32:41,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:32:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:41,593 INFO L82 PathProgramCache]: Analyzing trace with hash 19152, now seen corresponding path program 1 times [2021-10-06 21:32:41,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:41,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722309391] [2021-10-06 21:32:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:32:41,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:41,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:41,596 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) [2021-10-06 21:32:41,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:32:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:41,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:32:41,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:41,848 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:32:41,848 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 21:32:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:42,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:42,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:42,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722309391] [2021-10-06 21:32:42,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722309391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:42,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:42,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:32:42,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348587511] [2021-10-06 21:32:42,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:32:42,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:32:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:32:42,495 INFO L87 Difference]: Start difference. First operand 431 states and 1216 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) [2021-10-06 21:32:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:42,595 INFO L93 Difference]: Finished difference Result 430 states and 1215 transitions. [2021-10-06 21:32:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:32:42,597 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 [2021-10-06 21:32:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:42,601 INFO L225 Difference]: With dead ends: 430 [2021-10-06 21:32:42,602 INFO L226 Difference]: Without dead ends: 430 [2021-10-06 21:32:42,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:32:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-10-06 21:32:42,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-10-06 21:32:42,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 388 states have (on average 3.131443298969072) internal successors, (1215), 429 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1215 transitions. [2021-10-06 21:32:42,623 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1215 transitions. Word has length 2 [2021-10-06 21:32:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:42,623 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1215 transitions. [2021-10-06 21:32:42,623 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) [2021-10-06 21:32:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1215 transitions. [2021-10-06 21:32:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:32:42,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:42,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:32:42,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-06 21:32:42,838 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 [2021-10-06 21:32:42,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:32:42,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:42,840 INFO L82 PathProgramCache]: Analyzing trace with hash 19153, now seen corresponding path program 1 times [2021-10-06 21:32:42,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:42,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565069891] [2021-10-06 21:32:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:32:42,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:42,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:42,843 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) [2021-10-06 21:32:42,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:32:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:32:42,902 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 21:32:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:32:42,967 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-06 21:32:42,968 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 21:32:42,969 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:32:42,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:32:42,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:32:42,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:32:42,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:32:42,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:32:42,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:32:42,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:32:42,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:32:42,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:32:42,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:32:42,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:32:42,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:32:42,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:32:42,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:32:42,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:32:42,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:32:42,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:32:42,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:32:42,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:32:42,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:32:42,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:32:42,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:32:42,977 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:32:42,977 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:32:42,977 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:32:42,977 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:32:42,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:43,192 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 [2021-10-06 21:32:43,201 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:32:43,202 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:32:43,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:32:43 BasicIcfg [2021-10-06 21:32:43,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:32:43,231 INFO L168 Benchmark]: Toolchain (without parser) took 33977.20 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 125.8 MB in the beginning and 132.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 36.3 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:43,235 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:32:43,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.71 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 112.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:43,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.24 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 110.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:43,245 INFO L168 Benchmark]: Boogie Preprocessor took 89.34 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 109.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:43,248 INFO L168 Benchmark]: RCFGBuilder took 1221.58 ms. Allocated memory is still 151.0 MB. Free memory was 109.2 MB in the beginning and 112.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:43,249 INFO L168 Benchmark]: TraceAbstraction took 32226.16 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 112.4 MB in the beginning and 132.3 MB in the end (delta: -19.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:43,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 352.71 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 112.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.24 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 110.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.34 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 109.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1221.58 ms. Allocated memory is still 151.0 MB. Free memory was 109.2 MB in the beginning and 112.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32226.16 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 112.4 MB in the beginning and 132.3 MB in the end (delta: -19.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20881.5ms, 145 PlacesBefore, 55 PlacesAfterwards, 145 TransitionsBefore, 48 TransitionsAfterwards, 1252 CoEnabledTransitionPairs, 7 FixpointIterations, 84 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 140 TotalNumberOfCompositions, 3101 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2259, positive: 2160, positive conditional: 0, positive unconditional: 2160, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 852, positive: 827, positive conditional: 0, positive unconditional: 827, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 852, positive: 822, positive conditional: 0, positive unconditional: 822, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1790, positive: 775, positive conditional: 0, positive unconditional: 775, negative: 1015, negative conditional: 0, negative unconditional: 1015, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2259, positive: 1333, positive conditional: 0, positive unconditional: 1333, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 852, unknown conditional: 0, unknown unconditional: 852] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 149, Positive conditional cache size: 0, Positive unconditional cache size: 149, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - 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: 102]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L38] int* queue; [L39] int front, back, d, n, W; [L40] _Bool v_assert; [L74] pthread_t t1, t2, t3; [L76] W = __VERIFIER_nondet_int() [L77] n = __VERIFIER_nondet_int() [L78] front = __VERIFIER_nondet_int() [L79] back = front [L80] v_assert = 1 [L35] COND FALSE !(!cond) [L100] int* arr = (int*)malloc(sizeof(int) * size); [L101] int i = 0; VAL [back=5, d=0, front=5, n=1073741824, queue={0:0}, v_assert=1] [L101] COND TRUE i < size [L102] arr[i] = __VERIFIER_nondet_int() - UnprovableResult [Line: 51]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - 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: 102]: 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: 89]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 89]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 90]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 94]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 87]: 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: 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: 88]: 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 7 procedures, 161 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 32060.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 12.8ms, AutomataDifference: 678.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20981.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 193 SDslu, 0 SDs, 0 SdLazy, 50 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 467.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=602occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 201.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.3ms SsaConstructionTime, 127.3ms SatisfiabilityAnalysisTime, 8815.2ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 2 QuantifiedInterpolants, 196 SizeOfPredicates, 17 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-10-06 21:32:43,317 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...