./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel/misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel/misc-5.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8466ec9303e2b3db8d2f0e0668c32809dd28bb28 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-03 12:07:39,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-03 12:07:39,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-03 12:07:39,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-03 12:07:39,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-03 12:07:39,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-03 12:07:39,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-03 12:07:39,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-03 12:07:39,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-03 12:07:39,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-03 12:07:40,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-03 12:07:40,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-03 12:07:40,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-03 12:07:40,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-03 12:07:40,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-03 12:07:40,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-03 12:07:40,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-03 12:07:40,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-03 12:07:40,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-03 12:07:40,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-03 12:07:40,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-03 12:07:40,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-03 12:07:40,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-03 12:07:40,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-03 12:07:40,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-03 12:07:40,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-03 12:07:40,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-03 12:07:40,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-03 12:07:40,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-03 12:07:40,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-03 12:07:40,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-03 12:07:40,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-03 12:07:40,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-03 12:07:40,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-03 12:07:40,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-03 12:07:40,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-03 12:07:40,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-03 12:07:40,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-03 12:07:40,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-03 12:07:40,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-03 12:07:40,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-03 12:07:40,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-03 12:07:40,126 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-03 12:07:40,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-03 12:07:40,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-03 12:07:40,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-03 12:07:40,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-03 12:07:40,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-03 12:07:40,131 INFO L138 SettingsManager]: * Use SBE=true [2021-10-03 12:07:40,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-03 12:07:40,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-03 12:07:40,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-03 12:07:40,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-03 12:07:40,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-03 12:07:40,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-03 12:07:40,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-03 12:07:40,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-03 12:07:40,135 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-03 12:07:40,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-03 12:07:40,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-03 12:07:40,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-03 12:07:40,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-03 12:07:40,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-03 12:07:40,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-03 12:07:40,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:07:40,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-03 12:07:40,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-03 12:07:40,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-03 12:07:40,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-03 12:07:40,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-03 12:07:40,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-03 12:07:40,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-03 12:07:40,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8466ec9303e2b3db8d2f0e0668c32809dd28bb28 [2021-10-03 12:07:40,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-03 12:07:40,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-03 12:07:40,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-03 12:07:40,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-03 12:07:40,707 INFO L275 PluginConnector]: CDTParser initialized [2021-10-03 12:07:40,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/misc-5.wvr.c [2021-10-03 12:07:40,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d170b9ad8/f2ec1f786bae468f9d7fe97dab003bca/FLAG20a8016f1 [2021-10-03 12:07:41,469 INFO L306 CDTParser]: Found 1 translation units. [2021-10-03 12:07:41,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-5.wvr.c [2021-10-03 12:07:41,470 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:07:41,470 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:07:41,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d170b9ad8/f2ec1f786bae468f9d7fe97dab003bca/FLAG20a8016f1 [2021-10-03 12:07:41,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d170b9ad8/f2ec1f786bae468f9d7fe97dab003bca [2021-10-03 12:07:41,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-03 12:07:41,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-03 12:07:41,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-03 12:07:41,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-03 12:07:41,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-03 12:07:41,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:07:41" (1/1) ... [2021-10-03 12:07:41,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2800b0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:41, skipping insertion in model container [2021-10-03 12:07:41,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:07:41" (1/1) ... [2021-10-03 12:07:41,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-03 12:07:41,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-03 12:07:42,049 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:07:42,104 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/parallel/misc-5.wvr.c[1641,1654] [2021-10-03 12:07:42,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:07:42,119 INFO L203 MainTranslator]: Completed pre-run [2021-10-03 12:07:42,132 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:07:42,145 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/parallel/misc-5.wvr.c[1641,1654] [2021-10-03 12:07:42,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:07:42,163 INFO L208 MainTranslator]: Completed translation [2021-10-03 12:07:42,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42 WrapperNode [2021-10-03 12:07:42,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-03 12:07:42,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-03 12:07:42,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-03 12:07:42,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-03 12:07:42,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-03 12:07:42,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-03 12:07:42,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-03 12:07:42,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-03 12:07:42,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-03 12:07:42,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-03 12:07:42,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-03 12:07:42,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-03 12:07:42,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (1/1) ... [2021-10-03 12:07:42,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:07:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:07:42,303 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) [2021-10-03 12:07:42,320 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 [2021-10-03 12:07:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-03 12:07:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-03 12:07:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-03 12:07:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-03 12:07:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-03 12:07:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-03 12:07:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-03 12:07:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-03 12:07:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-03 12:07:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-03 12:07:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-03 12:07:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-03 12:07:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-03 12:07:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-03 12:07:42,373 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-03 12:07:42,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-03 12:07:42,905 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-03 12:07:42,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:07:42 BoogieIcfgContainer [2021-10-03 12:07:42,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-03 12:07:42,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-03 12:07:42,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-03 12:07:42,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-03 12:07:42,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 12:07:41" (1/3) ... [2021-10-03 12:07:42,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d87db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:07:42, skipping insertion in model container [2021-10-03 12:07:42,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:42" (2/3) ... [2021-10-03 12:07:42,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d87db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:07:42, skipping insertion in model container [2021-10-03 12:07:42,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:07:42" (3/3) ... [2021-10-03 12:07:42,923 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.c [2021-10-03 12:07:42,935 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-03 12:07:42,935 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-03 12:07:42,935 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-03 12:07:42,936 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-03 12:07:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,978 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,980 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,980 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,980 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,980 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,980 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,982 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,982 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,982 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,982 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,983 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,986 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,987 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,988 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,989 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,989 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,989 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,990 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,990 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,994 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,994 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,994 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,994 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,995 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,998 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:42,998 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,001 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,003 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:43,014 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-03 12:07:43,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-03 12:07:43,111 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-03 12:07:43,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-03 12:07:43,129 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-03 12:07:43,143 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 92 transitions, 208 flow [2021-10-03 12:07:43,147 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 92 transitions, 208 flow [2021-10-03 12:07:43,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 208 flow [2021-10-03 12:07:43,216 INFO L129 PetriNetUnfolder]: 7/89 cut-off events. [2021-10-03 12:07:43,216 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-03 12:07:43,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 7/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2021-10-03 12:07:43,225 INFO L116 LiptonReduction]: Number of co-enabled transitions 1022 [2021-10-03 12:07:45,945 INFO L131 LiptonReduction]: Checked pairs total: 1951 [2021-10-03 12:07:45,945 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-03 12:07:45,956 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 80 flow [2021-10-03 12:07:45,980 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 12:07:45,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:45,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:45,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:46,002 INFO L82 PathProgramCache]: Analyzing trace with hash 698108777, now seen corresponding path program 1 times [2021-10-03 12:07:46,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:46,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057265258] [2021-10-03 12:07:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:46,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:46,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:46,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057265258] [2021-10-03 12:07:46,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057265258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:46,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:46,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-03 12:07:46,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233978823] [2021-10-03 12:07:46,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-03 12:07:46,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-03 12:07:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:46,320 INFO L87 Difference]: Start difference. First operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:46,371 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-03 12:07:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:07:46,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-03 12:07:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:46,388 INFO L225 Difference]: With dead ends: 124 [2021-10-03 12:07:46,388 INFO L226 Difference]: Without dead ends: 88 [2021-10-03 12:07:46,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-03 12:07:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-03 12:07:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-03 12:07:46,444 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-03 12:07:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:46,445 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-03 12:07:46,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-03 12:07:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 12:07:46,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:46,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:46,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-03 12:07:46,449 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:46,450 INFO L82 PathProgramCache]: Analyzing trace with hash -804814535, now seen corresponding path program 2 times [2021-10-03 12:07:46,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:46,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696325477] [2021-10-03 12:07:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:46,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:46,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:46,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696325477] [2021-10-03 12:07:46,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696325477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:46,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:46,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-03 12:07:46,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985208149] [2021-10-03 12:07:46,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-03 12:07:46,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-03 12:07:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 12:07:46,676 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:46,732 INFO L93 Difference]: Finished difference Result 158 states and 440 transitions. [2021-10-03 12:07:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-03 12:07:46,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-03 12:07:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:46,736 INFO L225 Difference]: With dead ends: 158 [2021-10-03 12:07:46,736 INFO L226 Difference]: Without dead ends: 130 [2021-10-03 12:07:46,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-03 12:07:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-03 12:07:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-03 12:07:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.9147286821705425) internal successors, (376), 129 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 376 transitions. [2021-10-03 12:07:46,756 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 376 transitions. Word has length 16 [2021-10-03 12:07:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:46,757 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 376 transitions. [2021-10-03 12:07:46,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 376 transitions. [2021-10-03 12:07:46,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-03 12:07:46,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:46,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:46,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-03 12:07:46,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:46,761 INFO L82 PathProgramCache]: Analyzing trace with hash 2078130122, now seen corresponding path program 1 times [2021-10-03 12:07:46,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:46,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375331396] [2021-10-03 12:07:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:46,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:46,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:46,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375331396] [2021-10-03 12:07:46,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375331396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:46,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:46,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-03 12:07:46,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810310880] [2021-10-03 12:07:46,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-03 12:07:46,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-03 12:07:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:46,842 INFO L87 Difference]: Start difference. First operand 130 states and 376 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:46,855 INFO L93 Difference]: Finished difference Result 210 states and 565 transitions. [2021-10-03 12:07:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:07:46,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-03 12:07:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:46,858 INFO L225 Difference]: With dead ends: 210 [2021-10-03 12:07:46,859 INFO L226 Difference]: Without dead ends: 204 [2021-10-03 12:07:46,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-03 12:07:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 152. [2021-10-03 12:07:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.9139072847682117) internal successors, (440), 151 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 440 transitions. [2021-10-03 12:07:46,894 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 440 transitions. Word has length 18 [2021-10-03 12:07:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:46,895 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 440 transitions. [2021-10-03 12:07:46,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 440 transitions. [2021-10-03 12:07:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-03 12:07:46,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:46,900 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:46,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-03 12:07:46,904 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:46,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1628147752, now seen corresponding path program 1 times [2021-10-03 12:07:46,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:46,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362087770] [2021-10-03 12:07:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:46,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:47,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:47,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362087770] [2021-10-03 12:07:47,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362087770] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:47,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:47,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-03 12:07:47,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419897425] [2021-10-03 12:07:47,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-03 12:07:47,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-03 12:07:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:47,072 INFO L87 Difference]: Start difference. First operand 152 states and 440 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:47,086 INFO L93 Difference]: Finished difference Result 236 states and 636 transitions. [2021-10-03 12:07:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:07:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-03 12:07:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:47,091 INFO L225 Difference]: With dead ends: 236 [2021-10-03 12:07:47,092 INFO L226 Difference]: Without dead ends: 202 [2021-10-03 12:07:47,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-03 12:07:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 152. [2021-10-03 12:07:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.9006622516556293) internal successors, (438), 151 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 438 transitions. [2021-10-03 12:07:47,121 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 438 transitions. Word has length 18 [2021-10-03 12:07:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:47,121 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 438 transitions. [2021-10-03 12:07:47,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 438 transitions. [2021-10-03 12:07:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-03 12:07:47,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:47,123 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:47,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-03 12:07:47,124 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1700210386, now seen corresponding path program 1 times [2021-10-03 12:07:47,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:47,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886327684] [2021-10-03 12:07:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:47,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:47,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:47,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886327684] [2021-10-03 12:07:47,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886327684] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:07:47,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151799416] [2021-10-03 12:07:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:47,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:07:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:07:47,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:07:47,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-03 12:07:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:47,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-03 12:07:47,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:07:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:47,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151799416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:07:47,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:07:47,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-03 12:07:47,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975055456] [2021-10-03 12:07:47,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-03 12:07:47,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-03 12:07:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-03 12:07:47,482 INFO L87 Difference]: Start difference. First operand 152 states and 438 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:47,597 INFO L93 Difference]: Finished difference Result 310 states and 920 transitions. [2021-10-03 12:07:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-03 12:07:47,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-03 12:07:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:47,603 INFO L225 Difference]: With dead ends: 310 [2021-10-03 12:07:47,603 INFO L226 Difference]: Without dead ends: 262 [2021-10-03 12:07:47,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-03 12:07:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-03 12:07:47,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 234. [2021-10-03 12:07:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.03862660944206) internal successors, (708), 233 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 708 transitions. [2021-10-03 12:07:47,625 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 708 transitions. Word has length 18 [2021-10-03 12:07:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:47,625 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 708 transitions. [2021-10-03 12:07:47,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 708 transitions. [2021-10-03 12:07:47,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-03 12:07:47,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:47,628 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:47,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-03 12:07:47,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:07:47,842 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1236419836, now seen corresponding path program 1 times [2021-10-03 12:07:47,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:47,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622235588] [2021-10-03 12:07:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:47,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:07:47,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:47,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622235588] [2021-10-03 12:07:47,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622235588] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:47,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:47,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-03 12:07:47,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836864625] [2021-10-03 12:07:47,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-03 12:07:47,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-03 12:07:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 12:07:47,984 INFO L87 Difference]: Start difference. First operand 234 states and 708 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:48,024 INFO L93 Difference]: Finished difference Result 344 states and 1045 transitions. [2021-10-03 12:07:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-03 12:07:48,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-03 12:07:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:48,032 INFO L225 Difference]: With dead ends: 344 [2021-10-03 12:07:48,033 INFO L226 Difference]: Without dead ends: 344 [2021-10-03 12:07:48,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 12:07:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-03 12:07:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 312. [2021-10-03 12:07:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 3.0514469453376205) internal successors, (949), 311 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 949 transitions. [2021-10-03 12:07:48,067 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 949 transitions. Word has length 22 [2021-10-03 12:07:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:48,067 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 949 transitions. [2021-10-03 12:07:48,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 949 transitions. [2021-10-03 12:07:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-03 12:07:48,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:48,070 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:48,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-03 12:07:48,070 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:07:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -230418320, now seen corresponding path program 1 times [2021-10-03 12:07:48,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:48,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188592504] [2021-10-03 12:07:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:48,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:07:48,166 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-03 12:07:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:07:48,266 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-03 12:07:48,266 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-03 12:07:48,267 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-03 12:07:48,269 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-03 12:07:48,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-03 12:07:48,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-03 12:07:48,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-03 12:07:48,276 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-03 12:07:48,277 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-03 12:07:48,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 12:07:48 BasicIcfg [2021-10-03 12:07:48,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-03 12:07:48,325 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-03 12:07:48,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-03 12:07:48,328 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-03 12:07:48,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:07:42" (3/4) ... [2021-10-03 12:07:48,331 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-03 12:07:48,405 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-03 12:07:48,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-03 12:07:48,408 INFO L168 Benchmark]: Toolchain (without parser) took 6556.84 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 39.2 MB in the beginning and 54.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:48,408 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 21.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:07:48,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.82 ms. Allocated memory is still 62.9 MB. Free memory was 38.9 MB in the beginning and 43.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:48,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:48,410 INFO L168 Benchmark]: Boogie Preprocessor took 31.35 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 40.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:48,411 INFO L168 Benchmark]: RCFGBuilder took 664.33 ms. Allocated memory is still 62.9 MB. Free memory was 40.7 MB in the beginning and 41.2 MB in the end (delta: -494.2 kB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:48,411 INFO L168 Benchmark]: TraceAbstraction took 5415.31 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 40.6 MB in the beginning and 59.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:48,412 INFO L168 Benchmark]: Witness Printer took 80.13 ms. Allocated memory is still 92.3 MB. Free memory was 59.5 MB in the beginning and 54.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:48,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 21.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.82 ms. Allocated memory is still 62.9 MB. Free memory was 38.9 MB in the beginning and 43.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.35 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 40.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 664.33 ms. Allocated memory is still 62.9 MB. Free memory was 40.7 MB in the beginning and 41.2 MB in the end (delta: -494.2 kB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5415.31 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 40.6 MB in the beginning and 59.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 80.13 ms. Allocated memory is still 92.3 MB. Free memory was 59.5 MB in the beginning and 54.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2798.9ms, 95 PlacesBefore, 34 PlacesAfterwards, 92 TransitionsBefore, 28 TransitionsAfterwards, 1022 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 1951 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1438, positive: 1370, positive conditional: 0, positive unconditional: 1370, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 774, positive: 752, positive conditional: 0, positive unconditional: 752, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 774, positive: 746, positive conditional: 0, positive unconditional: 746, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 89, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1438, positive: 618, positive conditional: 0, positive unconditional: 618, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 774, unknown conditional: 0, unknown unconditional: 774] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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: 85]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] 0 int pos, c1, c2; [L18] 0 _Bool v_assert; [L67] 0 pthread_t t1, t2, t3; [L70] 0 pos = __VERIFIER_nondet_int() [L71] 0 c1 = __VERIFIER_nondet_int() [L72] 0 c2 = __VERIFIER_nondet_int() [L73] 0 v_assert = __VERIFIER_nondet_bool() [L14] COND FALSE 0 !(!cond) [L78] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [c1=0, c2=0, pos=0, v_assert=1] [L79] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [c1=0, c2=0, pos=0, v_assert=1] [L80] FCALL, FORK 0 pthread_create(&t3, NULL, thread3, NULL) VAL [c1=0, c2=0, pos=0, v_assert=1] [L81] 0 \read(t1) VAL [c1=0, c2=0, pos=0, v_assert=1] [L41] COND TRUE 2 \read(v_assert) [L42] COND TRUE 2 __VERIFIER_nondet_bool() VAL [c1=0, c2=0, pos=0, v_assert=1] [L44] 2 pos++ [L45] 2 c2++ VAL [c1=0, c2=1, pos=1, v_assert=1] [L41] COND TRUE 2 \read(v_assert) VAL [c1=0, c2=1, pos=1, v_assert=1] [L42] COND FALSE 2 !(__VERIFIER_nondet_bool()) [L14] COND FALSE 2 !(!cond) [L51] 2 pos-- [L52] 2 c1-- VAL [c1=-1, c2=1, pos=0, v_assert=1] [L41] COND TRUE 2 \read(v_assert) VAL [c1=-1, c2=1, pos=0, v_assert=1] [L42] COND FALSE 2 !(__VERIFIER_nondet_bool()) [L14] COND FALSE 2 !(!cond) [L51] 2 pos-- [L52] 2 c1-- VAL [c1=-2, c2=1, pos=-1, v_assert=1] [L61] 3 v_assert = (pos >= 0) [L63] 3 return 0; [L41] COND FALSE 2 !(\read(v_assert)) [L57] 2 return 0; [L21] COND FALSE 1 !(\read(v_assert)) [L37] 1 return 0; [L81] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, c1=-2, c2=1, pos=-1, v_assert=0] [L82] 0 \read(t2) VAL [\result={0:0}, c1=-2, c2=1, pos=-1, v_assert=0] [L82] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, c1=-2, c2=1, pos=-1, v_assert=0] [L83] 0 \read(t3) VAL [\result={0:0}, c1=-2, c2=1, pos=-1, v_assert=0] [L83] FCALL, JOIN 3 pthread_join(t3, 0) VAL [\result={0:0}, c1=-2, c2=1, pos=-1, v_assert=0] [L85] 0 reach_error() VAL [\result={0:0}, c1=-2, c2=1, pos=-1, v_assert=0] - UnprovableResult [Line: 79]: 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: 78]: 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: 80]: 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, 111 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5178.9ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 25.2ms, AutomataDifference: 374.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2868.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 163 SDtfs, 113 SDslu, 188 SDs, 0 SdLazy, 116 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 141.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=312occurred in iteration=6, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 167.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 162 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 58.3ms SsaConstructionTime, 474.4ms SatisfiabilityAnalysisTime, 602.9ms InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 261 SizeOfPredicates, 7 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 6/8 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! [2021-10-03 12:07:48,462 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...