./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt --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 5e1e7b98d25beb2e523be034d1614b38d1111ec6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:26:34,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:26:34,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:26:34,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:26:34,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:26:34,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:26:34,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:26:34,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:26:34,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:26:34,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:26:34,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:26:34,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:26:34,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:26:34,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:26:34,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:26:34,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:26:34,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:26:34,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:26:34,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:26:34,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:26:34,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:26:34,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:26:34,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:26:34,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:26:34,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:26:34,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:26:34,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:26:34,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:26:34,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:26:34,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:26:34,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:26:34,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:26:34,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:26:34,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:26:34,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:26:34,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:26:34,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:26:34,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:26:34,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:26:34,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:26:34,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:26:34,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:26:34,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:26:34,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:26:34,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:26:34,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:26:34,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:26:34,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:26:34,997 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:26:34,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:26:34,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:26:34,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:26:34,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:26:34,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:26:34,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:26:34,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:26:35,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:26:35,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:26:35,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:26:35,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:26:35,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:26:35,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:26:35,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:26:35,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:26:35,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:26:35,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:26:35,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:26:35,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:26:35,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:26:35,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:26:35,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:26:35,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:26:35,005 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e1e7b98d25beb2e523be034d1614b38d1111ec6 [2021-10-13 00:26:35,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:26:35,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:26:35,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:26:35,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:26:35,347 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:26:35,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i [2021-10-13 00:26:35,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/data/b5487856d/db623b7aae6f4ce3bd805d823f7b3fbe/FLAGa741ea6c7 [2021-10-13 00:26:36,140 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:26:36,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i [2021-10-13 00:26:36,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/data/b5487856d/db623b7aae6f4ce3bd805d823f7b3fbe/FLAGa741ea6c7 [2021-10-13 00:26:36,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/data/b5487856d/db623b7aae6f4ce3bd805d823f7b3fbe [2021-10-13 00:26:36,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:26:36,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:26:36,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:36,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:26:36,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:26:36,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:36" (1/1) ... [2021-10-13 00:26:36,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a94deb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:36, skipping insertion in model container [2021-10-13 00:26:36,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:36" (1/1) ... [2021-10-13 00:26:36,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:26:36,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:26:36,660 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i[950,963] [2021-10-13 00:26:36,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:36,923 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:26:36,939 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i[950,963] [2021-10-13 00:26:37,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:37,053 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:26:37,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37 WrapperNode [2021-10-13 00:26:37,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:37,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:37,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:26:37,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:26:37,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:37,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:26:37,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:26:37,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:26:37,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:26:37,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:26:37,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:26:37,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:26:37,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (1/1) ... [2021-10-13 00:26:37,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:26:37,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:37,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:37,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:26:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:26:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 00:26:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:26:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:26:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 00:26:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 00:26:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 00:26:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 00:26:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 00:26:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 00:26:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:26:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 00:26:37,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:26:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:26:37,295 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 00:26:37,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:26:37,728 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 00:26:37,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:37 BoogieIcfgContainer [2021-10-13 00:26:37,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:26:37,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:26:37,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:26:37,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:26:37,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:26:36" (1/3) ... [2021-10-13 00:26:37,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6b6d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:26:37, skipping insertion in model container [2021-10-13 00:26:37,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:37" (2/3) ... [2021-10-13 00:26:37,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6b6d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:26:37, skipping insertion in model container [2021-10-13 00:26:37,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:37" (3/3) ... [2021-10-13 00:26:37,749 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2021-10-13 00:26:37,756 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 00:26:37,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:26:37,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:26:37,756 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 00:26:37,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,813 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,830 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,836 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,837 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,837 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,837 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,847 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:26:37,850 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 00:26:37,913 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:26:37,921 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 [2021-10-13 00:26:37,921 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 00:26:37,945 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 00:26:37,957 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 185 flow [2021-10-13 00:26:37,960 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 185 flow [2021-10-13 00:26:37,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-10-13 00:26:38,021 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-10-13 00:26:38,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 00:26:38,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 00:26:38,032 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 00:26:40,965 INFO L131 LiptonReduction]: Checked pairs total: 2576 [2021-10-13 00:26:40,965 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-13 00:26:40,973 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-13 00:26:41,025 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:26:41,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:41,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:26:41,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:26:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:41,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1638919861, now seen corresponding path program 1 times [2021-10-13 00:26:41,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:41,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535050282] [2021-10-13 00:26:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:41,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:41,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:41,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535050282] [2021-10-13 00:26:41,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535050282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:41,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:41,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:26:41,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804053472] [2021-10-13 00:26:41,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:26:41,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:26:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:26:41,294 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:41,340 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2021-10-13 00:26:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:26:41,343 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:26:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:26:41,372 INFO L225 Difference]: With dead ends: 298 [2021-10-13 00:26:41,372 INFO L226 Difference]: Without dead ends: 298 [2021-10-13 00:26:41,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:26:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-13 00:26:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-13 00:26:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-13 00:26:41,477 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-13 00:26:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:26:41,478 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-13 00:26:41,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-13 00:26:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:26:41,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:41,484 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:26:41,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:26:41,484 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:26:41,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash 733081102, now seen corresponding path program 1 times [2021-10-13 00:26:41,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:41,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733431693] [2021-10-13 00:26:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:41,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:41,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:41,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733431693] [2021-10-13 00:26:41,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733431693] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:41,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:41,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:26:41,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142069050] [2021-10-13 00:26:41,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:26:41,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:26:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:26:41,672 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:41,703 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2021-10-13 00:26:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:26:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-13 00:26:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:26:41,715 INFO L225 Difference]: With dead ends: 330 [2021-10-13 00:26:41,715 INFO L226 Difference]: Without dead ends: 266 [2021-10-13 00:26:41,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:26:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-13 00:26:41,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-13 00:26:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.8377358490566036) internal successors, (752), 265 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2021-10-13 00:26:41,757 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2021-10-13 00:26:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:26:41,758 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2021-10-13 00:26:41,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2021-10-13 00:26:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:26:41,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:41,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:26:41,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:26:41,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:26:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:41,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1249982691, now seen corresponding path program 1 times [2021-10-13 00:26:41,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:41,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125685840] [2021-10-13 00:26:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:41,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:41,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:41,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125685840] [2021-10-13 00:26:41,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125685840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:41,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:41,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:26:41,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529658107] [2021-10-13 00:26:41,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:26:41,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:26:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:26:41,885 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:41,929 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2021-10-13 00:26:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:26:41,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:26:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:26:41,938 INFO L225 Difference]: With dead ends: 290 [2021-10-13 00:26:41,939 INFO L226 Difference]: Without dead ends: 242 [2021-10-13 00:26:41,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:26:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-13 00:26:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-13 00:26:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.780082987551867) internal successors, (670), 241 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2021-10-13 00:26:41,955 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2021-10-13 00:26:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:26:41,955 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2021-10-13 00:26:41,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2021-10-13 00:26:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:26:41,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:41,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:26:41,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:26:41,963 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:26:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:41,965 INFO L82 PathProgramCache]: Analyzing trace with hash 92215724, now seen corresponding path program 1 times [2021-10-13 00:26:41,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:41,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917335306] [2021-10-13 00:26:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:41,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:42,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:42,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917335306] [2021-10-13 00:26:42,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917335306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:42,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:42,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:26:42,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145941952] [2021-10-13 00:26:42,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:26:42,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:26:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:26:42,064 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:42,081 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2021-10-13 00:26:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:26:42,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:26:42,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:26:42,084 INFO L225 Difference]: With dead ends: 260 [2021-10-13 00:26:42,085 INFO L226 Difference]: Without dead ends: 224 [2021-10-13 00:26:42,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:26:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-13 00:26:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-10-13 00:26:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.7354260089686098) internal successors, (610), 223 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2021-10-13 00:26:42,096 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2021-10-13 00:26:42,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:26:42,096 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2021-10-13 00:26:42,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2021-10-13 00:26:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:26:42,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:42,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:26:42,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:26:42,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:26:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:42,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1437749409, now seen corresponding path program 1 times [2021-10-13 00:26:42,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:42,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893596099] [2021-10-13 00:26:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:42,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:42,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:42,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893596099] [2021-10-13 00:26:42,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893596099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:42,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:42,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:26:42,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141515590] [2021-10-13 00:26:42,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:26:42,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:26:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:26:42,168 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:42,206 INFO L93 Difference]: Finished difference Result 281 states and 747 transitions. [2021-10-13 00:26:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:26:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:26:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:26:42,208 INFO L225 Difference]: With dead ends: 281 [2021-10-13 00:26:42,209 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 00:26:42,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:26:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 00:26:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-13 00:26:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.4881889763779528) internal successors, (316), 127 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2021-10-13 00:26:42,216 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 12 [2021-10-13 00:26:42,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:26:42,216 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2021-10-13 00:26:42,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2021-10-13 00:26:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:26:42,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:42,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:26:42,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:26:42,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:26:42,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:42,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1576287559, now seen corresponding path program 1 times [2021-10-13 00:26:42,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:42,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963436834] [2021-10-13 00:26:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:42,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:42,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:42,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963436834] [2021-10-13 00:26:42,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963436834] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:42,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:42,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:26:42,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533638147] [2021-10-13 00:26:42,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:26:42,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:26:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:26:42,352 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:42,404 INFO L93 Difference]: Finished difference Result 158 states and 381 transitions. [2021-10-13 00:26:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:26:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 00:26:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:26:42,406 INFO L225 Difference]: With dead ends: 158 [2021-10-13 00:26:42,406 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 00:26:42,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:26:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 00:26:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 00:26:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 73 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2021-10-13 00:26:42,412 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 13 [2021-10-13 00:26:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:26:42,412 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2021-10-13 00:26:42,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2021-10-13 00:26:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:26:42,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:42,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:26:42,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:26:42,416 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:26:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:42,417 INFO L82 PathProgramCache]: Analyzing trace with hash 707566501, now seen corresponding path program 1 times [2021-10-13 00:26:42,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:42,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879979110] [2021-10-13 00:26:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:42,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:42,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:42,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879979110] [2021-10-13 00:26:42,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879979110] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:42,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:42,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:26:42,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118577964] [2021-10-13 00:26:42,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:26:42,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:26:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:26:42,538 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:42,573 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2021-10-13 00:26:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:26:42,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:26:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:26:42,575 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:26:42,575 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:26:42,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:26:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:26:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:26:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:26:42,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-13 00:26:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:26:42,579 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:26:42,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:26:42,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:26:42,583 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:26:42,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 00:26:42,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 00:26:42,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 00:26:42,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:26:42,591 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 00:26:42,591 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:26:42,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:26:42 BasicIcfg [2021-10-13 00:26:42,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:26:42,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:26:42,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:26:42,595 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:26:42,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:37" (3/4) ... [2021-10-13 00:26:42,599 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:26:42,606 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 00:26:42,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 00:26:42,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 00:26:42,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 00:26:42,616 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:26:42,616 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:26:42,616 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:26:42,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:26:42,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:26:42,684 INFO L168 Benchmark]: Toolchain (without parser) took 6254.49 ms. Allocated memory was 123.7 MB in the beginning and 192.9 MB in the end (delta: 69.2 MB). Free memory was 93.4 MB in the beginning and 147.5 MB in the end (delta: -54.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:42,685 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 123.7 MB. Free memory was 76.9 MB in the beginning and 76.9 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:42,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.43 ms. Allocated memory is still 123.7 MB. Free memory was 93.4 MB in the beginning and 86.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:42,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.25 ms. Allocated memory is still 123.7 MB. Free memory was 86.7 MB in the beginning and 84.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:42,687 INFO L168 Benchmark]: Boogie Preprocessor took 47.94 ms. Allocated memory is still 123.7 MB. Free memory was 84.6 MB in the beginning and 83.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:42,687 INFO L168 Benchmark]: RCFGBuilder took 544.87 ms. Allocated memory is still 123.7 MB. Free memory was 83.3 MB in the beginning and 71.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:42,688 INFO L168 Benchmark]: TraceAbstraction took 4853.56 ms. Allocated memory was 123.7 MB in the beginning and 192.9 MB in the end (delta: 69.2 MB). Free memory was 70.9 MB in the beginning and 150.6 MB in the end (delta: -79.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:42,688 INFO L168 Benchmark]: Witness Printer took 87.96 ms. Allocated memory is still 192.9 MB. Free memory was 150.6 MB in the beginning and 147.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:42,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 123.7 MB. Free memory was 76.9 MB in the beginning and 76.9 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 623.43 ms. Allocated memory is still 123.7 MB. Free memory was 93.4 MB in the beginning and 86.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.25 ms. Allocated memory is still 123.7 MB. Free memory was 86.7 MB in the beginning and 84.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.94 ms. Allocated memory is still 123.7 MB. Free memory was 84.6 MB in the beginning and 83.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 544.87 ms. Allocated memory is still 123.7 MB. Free memory was 83.3 MB in the beginning and 71.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4853.56 ms. Allocated memory was 123.7 MB in the beginning and 192.9 MB in the end (delta: 69.2 MB). Free memory was 70.9 MB in the beginning and 150.6 MB in the end (delta: -79.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 87.96 ms. Allocated memory is still 192.9 MB. Free memory was 150.6 MB in the beginning and 147.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3005.0ms, 93 PlacesBefore, 32 PlacesAfterwards, 85 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 2576 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1819, positive: 1740, positive conditional: 0, positive unconditional: 1740, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1070, positive: 1042, positive conditional: 0, positive unconditional: 1042, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1070, positive: 1030, positive conditional: 0, positive unconditional: 1030, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 100, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1819, positive: 698, positive conditional: 0, positive unconditional: 698, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 1070, unknown conditional: 0, unknown unconditional: 1070] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4679.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 28.1ms, AutomataDifference: 383.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3103.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 155 SDtfs, 168 SDslu, 197 SDs, 0 SdLazy, 51 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 137.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 161.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.7ms SsaConstructionTime, 231.4ms SatisfiabilityAnalysisTime, 466.4ms InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 00:26:42,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7acf914e-23c6-4514-8d0e-2f607463ded7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...