./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:34:38,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:39,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:39,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:39,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:39,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:39,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:39,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:39,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:39,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:39,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:39,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:39,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:39,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:39,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:39,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:39,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:39,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:39,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:39,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:39,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:39,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:39,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:39,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:39,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:39,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:39,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:39,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:39,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:39,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:39,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:39,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:39,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:39,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:39,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:39,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:39,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:39,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:39,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:39,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:39,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:39,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:34:39,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:39,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:39,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:39,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:39,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:39,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:39,186 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:39,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:39,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:39,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:34:39,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:34:39,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:39,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:39,189 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:34:39,189 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:34:39,189 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:34:39,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:34:39,190 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:34:39,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:39,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:39,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:39,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:39,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:34:39,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:39,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:39,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:34:39,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:34:39,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:34:39,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:39,193 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_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-10-28 08:34:39,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:39,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:39,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:39,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:39,486 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:39,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-28 08:34:39,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/828809204/2a0658b6dc6b4ca098083af1b7d8279b/FLAG1945b07e5 [2021-10-28 08:34:40,107 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:40,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-28 08:34:40,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/828809204/2a0658b6dc6b4ca098083af1b7d8279b/FLAG1945b07e5 [2021-10-28 08:34:40,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/828809204/2a0658b6dc6b4ca098083af1b7d8279b [2021-10-28 08:34:40,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:40,443 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:34:40,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:40,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:40,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:40,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:40,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa48cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40, skipping insertion in model container [2021-10-28 08:34:40,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:40,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:40,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:40,893 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_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-28 08:34:40,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:40,908 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:40,948 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_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-28 08:34:40,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:40,980 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:40,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40 WrapperNode [2021-10-28 08:34:40,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:40,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:40,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:40,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:40,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:40,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:41,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:41,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:41,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:41,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:41,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:41,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:41,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:41,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:41,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:41,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (1/1) ... [2021-10-28 08:34:41,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:41,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:41,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:34:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:34:41,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:34:41,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:34:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:34:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:34:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:34:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 08:34:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:34:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:34:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:34:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:34:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:34:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:34:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:34:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:34:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:34:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:34:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:34:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:34:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:34:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:34:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:34:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:34:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:34:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:34:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:34:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:34:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:34:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:34:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:34:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:34:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:34:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:34:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:34:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:34:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:34:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:34:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:34:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:34:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:34:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:34:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:34:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:34:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:34:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:34:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:34:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:34:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:34:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:34:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:34:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:34:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:34:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:34:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:34:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:34:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:34:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:34:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:34:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:34:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:34:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:34:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:34:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:34:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:34:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:34:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:34:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:34:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:34:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:34:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:34:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:34:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:34:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:34:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:34:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:34:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:34:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:34:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:34:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:34:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:34:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:34:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:34:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:34:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:34:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:34:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:34:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:34:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:34:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:34:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:34:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:34:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:34:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:34:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:34:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:34:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:34:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:34:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:34:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:34:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:34:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:34:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:34:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:34:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:34:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:34:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:34:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:34:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:34:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:34:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:34:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:34:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:34:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:34:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:34:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:34:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:34:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:34:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:34:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:34:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:34:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 08:34:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:34:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:34:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:34:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:34:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:34:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:34:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:34:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:34:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:34:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:41,589 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 08:34:41,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:41,850 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 08:34:41,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:41 BoogieIcfgContainer [2021-10-28 08:34:41,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:41,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:34:41,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:34:41,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:34:41,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:34:40" (1/3) ... [2021-10-28 08:34:41,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155247e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:41, skipping insertion in model container [2021-10-28 08:34:41,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:40" (2/3) ... [2021-10-28 08:34:41,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155247e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:41, skipping insertion in model container [2021-10-28 08:34:41,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:41" (3/3) ... [2021-10-28 08:34:41,861 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-10-28 08:34:41,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:34:41,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-28 08:34:41,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:34:41,922 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:34:41,922 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-28 08:34:41,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:34:41,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:34:41,947 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:41,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:41,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:41,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash -234092837, now seen corresponding path program 1 times [2021-10-28 08:34:41,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:41,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564807200] [2021-10-28 08:34:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:41,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:42,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:42,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564807200] [2021-10-28 08:34:42,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564807200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:42,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:42,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:34:42,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852370565] [2021-10-28 08:34:42,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:34:42,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:34:42,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:34:42,196 INFO L87 Difference]: Start difference. First operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:42,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:42,383 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-10-28 08:34:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:34:42,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 08:34:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:42,392 INFO L225 Difference]: With dead ends: 98 [2021-10-28 08:34:42,392 INFO L226 Difference]: Without dead ends: 90 [2021-10-28 08:34:42,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:34:42,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-28 08:34:42,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-28 08:34:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 86 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-10-28 08:34:42,432 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 11 [2021-10-28 08:34:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:42,433 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-10-28 08:34:42,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:42,433 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-10-28 08:34:42,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:34:42,434 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:42,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:42,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:34:42,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:42,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069837, now seen corresponding path program 1 times [2021-10-28 08:34:42,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:42,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99799032] [2021-10-28 08:34:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:42,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:42,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:42,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:42,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99799032] [2021-10-28 08:34:42,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99799032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:42,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:42,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:34:42,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542246206] [2021-10-28 08:34:42,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:42,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:42,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:42,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:42,559 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:42,829 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-10-28 08:34:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:34:42,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 08:34:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:42,836 INFO L225 Difference]: With dead ends: 111 [2021-10-28 08:34:42,836 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 08:34:42,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:34:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 08:34:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-10-28 08:34:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 87 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2021-10-28 08:34:42,861 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 12 [2021-10-28 08:34:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:42,861 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2021-10-28 08:34:42,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2021-10-28 08:34:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:34:42,862 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:42,862 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:42,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:34:42,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069838, now seen corresponding path program 1 times [2021-10-28 08:34:42,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:42,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206021955] [2021-10-28 08:34:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:42,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:43,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:43,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206021955] [2021-10-28 08:34:43,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206021955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:43,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:43,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:34:43,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022651535] [2021-10-28 08:34:43,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:43,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:43,046 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:43,306 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-10-28 08:34:43,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:34:43,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 08:34:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:43,310 INFO L225 Difference]: With dead ends: 128 [2021-10-28 08:34:43,311 INFO L226 Difference]: Without dead ends: 128 [2021-10-28 08:34:43,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:34:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-28 08:34:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-10-28 08:34:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 107 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-10-28 08:34:43,326 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 12 [2021-10-28 08:34:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:43,327 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-10-28 08:34:43,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-10-28 08:34:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:34:43,328 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:43,329 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:43,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:34:43,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:43,331 INFO L85 PathProgramCache]: Analyzing trace with hash 296118254, now seen corresponding path program 1 times [2021-10-28 08:34:43,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:43,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273654964] [2021-10-28 08:34:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:43,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:43,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:43,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273654964] [2021-10-28 08:34:43,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273654964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:43,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:43,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:34:43,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857957319] [2021-10-28 08:34:43,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:34:43,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:43,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:34:43,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:34:43,506 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:43,891 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-10-28 08:34:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:34:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 08:34:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:43,894 INFO L225 Difference]: With dead ends: 156 [2021-10-28 08:34:43,894 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 08:34:43,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:34:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 08:34:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 115. [2021-10-28 08:34:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 111 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2021-10-28 08:34:43,911 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 21 [2021-10-28 08:34:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:43,912 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2021-10-28 08:34:43,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2021-10-28 08:34:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:34:43,913 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:43,913 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:43,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:34:43,914 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash 296118255, now seen corresponding path program 1 times [2021-10-28 08:34:43,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:43,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555829500] [2021-10-28 08:34:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:43,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:44,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:44,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555829500] [2021-10-28 08:34:44,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555829500] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:44,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:44,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:34:44,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373423086] [2021-10-28 08:34:44,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:34:44,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:44,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:34:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:34:44,090 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:44,540 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2021-10-28 08:34:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:34:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 08:34:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:44,542 INFO L225 Difference]: With dead ends: 159 [2021-10-28 08:34:44,542 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 08:34:44,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:34:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 08:34:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2021-10-28 08:34:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 95 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-10-28 08:34:44,549 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 21 [2021-10-28 08:34:44,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:44,550 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-10-28 08:34:44,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:44,550 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-10-28 08:34:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:34:44,551 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:44,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:44,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:34:44,552 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1432577259, now seen corresponding path program 1 times [2021-10-28 08:34:44,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:44,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426797953] [2021-10-28 08:34:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:44,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:44,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:44,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426797953] [2021-10-28 08:34:44,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426797953] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:44,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:44,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:34:44,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982285945] [2021-10-28 08:34:44,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:34:44,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:34:44,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:34:44,662 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:44,919 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-10-28 08:34:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:34:44,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-28 08:34:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:44,923 INFO L225 Difference]: With dead ends: 191 [2021-10-28 08:34:44,923 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 08:34:44,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:34:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 08:34:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 110. [2021-10-28 08:34:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-10-28 08:34:44,931 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 22 [2021-10-28 08:34:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:44,931 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-10-28 08:34:44,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-10-28 08:34:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:34:44,932 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:44,933 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:44,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:34:44,933 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239013, now seen corresponding path program 1 times [2021-10-28 08:34:44,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:44,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463635030] [2021-10-28 08:34:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:44,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:45,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:45,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463635030] [2021-10-28 08:34:45,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463635030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:45,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:45,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:34:45,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433202936] [2021-10-28 08:34:45,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:34:45,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:34:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:34:45,037 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:45,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:45,315 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2021-10-28 08:34:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:34:45,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 08:34:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:45,316 INFO L225 Difference]: With dead ends: 138 [2021-10-28 08:34:45,317 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 08:34:45,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:34:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 08:34:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2021-10-28 08:34:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 104 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-10-28 08:34:45,322 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 24 [2021-10-28 08:34:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:45,323 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-28 08:34:45,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-10-28 08:34:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:34:45,324 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:45,324 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:45,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:34:45,324 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:45,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239012, now seen corresponding path program 1 times [2021-10-28 08:34:45,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:45,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999855478] [2021-10-28 08:34:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:45,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:34:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:45,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:45,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999855478] [2021-10-28 08:34:45,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999855478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:45,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:45,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:34:45,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695335289] [2021-10-28 08:34:45,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:34:45,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:34:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:34:45,426 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:45,785 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-10-28 08:34:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:34:45,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 08:34:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:45,787 INFO L225 Difference]: With dead ends: 136 [2021-10-28 08:34:45,787 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 08:34:45,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:34:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 08:34:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 93. [2021-10-28 08:34:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-10-28 08:34:45,796 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 24 [2021-10-28 08:34:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:45,797 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-10-28 08:34:45,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-10-28 08:34:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:34:45,798 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:45,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:45,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:34:45,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2025386131, now seen corresponding path program 1 times [2021-10-28 08:34:45,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:45,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374105930] [2021-10-28 08:34:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:45,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:45,831 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:45,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:45,887 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:34:45,888 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:34:45,890 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:34:45,890 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:34:45,890 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:34:45,891 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:34:45,891 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:34:45,891 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:34:45,891 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 08:34:45,891 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 08:34:45,891 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 08:34:45,892 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 08:34:45,892 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 08:34:45,892 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 08:34:45,892 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 08:34:45,892 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 08:34:45,893 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 08:34:45,893 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 08:34:45,893 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 08:34:45,893 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 08:34:45,893 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 08:34:45,893 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 08:34:45,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 08:34:45,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 08:34:45,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 08:34:45,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 08:34:45,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 08:34:45,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 08:34:45,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 08:34:45,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 08:34:45,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 08:34:45,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 08:34:45,895 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:34:45,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:34:45,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:34:45,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:34:45,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:34:45,896 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:34:45,897 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:34:45,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:34:45,900 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:45,903 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:34:45,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:34:45 BoogieIcfgContainer [2021-10-28 08:34:45,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:34:45,929 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:34:45,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:34:45,929 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:34:45,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:41" (3/4) ... [2021-10-28 08:34:45,933 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:34:45,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:34:45,935 INFO L168 Benchmark]: Toolchain (without parser) took 5491.36 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 72.4 MB in the beginning and 98.7 MB in the end (delta: -26.3 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:45,935 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:45,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.49 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 72.1 MB in the beginning and 98.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:45,936 INFO L168 Benchmark]: Boogie Preprocessor took 69.10 ms. Allocated memory is still 130.0 MB. Free memory was 98.7 MB in the beginning and 95.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:45,937 INFO L168 Benchmark]: RCFGBuilder took 800.55 ms. Allocated memory is still 130.0 MB. Free memory was 95.5 MB in the beginning and 70.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:45,937 INFO L168 Benchmark]: TraceAbstraction took 4074.53 ms. Allocated memory is still 130.0 MB. Free memory was 70.5 MB in the beginning and 98.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:45,937 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 130.0 MB. Free memory is still 98.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:45,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 527.49 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 72.1 MB in the beginning and 98.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.10 ms. Allocated memory is still 130.0 MB. Free memory was 98.7 MB in the beginning and 95.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 800.55 ms. Allocated memory is still 130.0 MB. Free memory was 95.5 MB in the beginning and 70.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4074.53 ms. Allocated memory is still 130.0 MB. Free memory was 70.5 MB in the beginning and 98.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.18 ms. Allocated memory is still 130.0 MB. Free memory is still 98.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 117 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 578 SDtfs, 865 SDslu, 1008 SDs, 0 SdLazy, 2288 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 17/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:34:45,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:34:48,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:48,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:48,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:48,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:48,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:48,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:48,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:48,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:48,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:48,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:48,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:48,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:48,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:48,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:48,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:48,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:48,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:48,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:48,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:48,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:48,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:48,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:48,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:48,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:48,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:48,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:48,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:48,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:48,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:48,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:48,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:48,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:48,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:48,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:48,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:48,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:48,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:48,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:48,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:48,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:48,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 08:34:48,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:48,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:48,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:48,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:48,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:48,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:48,667 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:48,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:48,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:48,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:34:48,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:34:48,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:48,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:48,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:34:48,670 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:34:48,670 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:34:48,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:34:48,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:34:48,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:34:48,671 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:34:48,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:48,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:48,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:48,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:48,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:34:48,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:48,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:48,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:34:48,673 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:34:48,673 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:34:48,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:48,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:34:48,674 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-10-28 08:34:49,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:49,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:49,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:49,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:49,136 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:49,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-28 08:34:49,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/7578a629d/8207b8a6b03242aca433d4fa58124910/FLAG3681ad0c1 [2021-10-28 08:34:49,684 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:49,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-28 08:34:49,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/7578a629d/8207b8a6b03242aca433d4fa58124910/FLAG3681ad0c1 [2021-10-28 08:34:50,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/data/7578a629d/8207b8a6b03242aca433d4fa58124910 [2021-10-28 08:34:50,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:50,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:34:50,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:50,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:50,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:50,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:50" (1/1) ... [2021-10-28 08:34:50,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4274e045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:50, skipping insertion in model container [2021-10-28 08:34:50,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:50" (1/1) ... [2021-10-28 08:34:50,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:50,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:50,915 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_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-28 08:34:50,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:50,946 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:51,017 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_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-28 08:34:51,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:51,054 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:51,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51 WrapperNode [2021-10-28 08:34:51,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:51,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:51,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:51,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:51,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:51,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:51,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:51,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:51,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (1/1) ... [2021-10-28 08:34:51,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:51,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:51,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:51,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:34:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:34:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:34:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:34:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:34:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:34:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:34:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:34:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 08:34:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:34:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:34:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:34:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:34:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:34:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:34:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:34:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:34:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:34:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:34:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:34:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:34:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:34:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:34:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:34:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:34:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:34:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:34:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:34:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:34:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:34:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:34:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:34:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:34:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:34:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:34:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:34:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:34:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:34:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:34:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:34:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:34:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:34:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:34:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:34:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:34:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:34:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:34:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:34:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:34:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:34:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:34:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:34:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:34:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:34:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:34:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:34:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:34:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:34:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:34:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:34:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:34:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:34:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:34:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:34:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:34:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:34:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:34:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:34:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:34:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:34:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:34:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:34:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:34:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:34:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:34:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:34:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:34:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:34:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:34:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:34:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:34:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:34:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:34:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:34:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:34:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:34:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:34:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:34:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:34:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:34:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:34:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:34:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:34:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:34:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:34:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:34:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:34:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:34:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:34:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:34:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:34:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:34:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:34:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:34:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:34:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:34:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:34:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:34:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:34:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:34:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:34:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:34:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:34:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:34:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:34:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:34:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:34:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:34:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:34:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:34:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:34:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:34:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 08:34:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:34:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:34:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 08:34:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:34:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:34:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 08:34:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:34:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:34:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:34:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:34:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 08:34:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 08:34:51,617 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 08:34:52,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:52,087 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 08:34:52,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:52 BoogieIcfgContainer [2021-10-28 08:34:52,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:52,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:34:52,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:34:52,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:34:52,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:34:50" (1/3) ... [2021-10-28 08:34:52,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d486980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:52, skipping insertion in model container [2021-10-28 08:34:52,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:51" (2/3) ... [2021-10-28 08:34:52,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d486980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:52, skipping insertion in model container [2021-10-28 08:34:52,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:52" (3/3) ... [2021-10-28 08:34:52,107 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-10-28 08:34:52,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:34:52,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-28 08:34:52,171 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:34:52,181 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:34:52,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-28 08:34:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:34:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:34:52,215 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:52,215 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:52,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184920, now seen corresponding path program 1 times [2021-10-28 08:34:52,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:34:52,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419564534] [2021-10-28 08:34:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:52,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:34:52,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:34:52,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:34:52,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:34:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:52,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 08:34:52,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:52,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:34:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:52,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:34:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:52,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:34:52,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419564534] [2021-10-28 08:34:52,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419564534] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:52,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:52,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 08:34:52,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476855223] [2021-10-28 08:34:52,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:34:52,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:34:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:34:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:34:52,701 INFO L87 Difference]: Start difference. First operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:53,119 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-10-28 08:34:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:34:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 08:34:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:53,129 INFO L225 Difference]: With dead ends: 111 [2021-10-28 08:34:53,130 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 08:34:53,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 08:34:53,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2021-10-28 08:34:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 79 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-10-28 08:34:53,204 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 10 [2021-10-28 08:34:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:53,204 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-10-28 08:34:53,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-10-28 08:34:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:34:53,205 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:53,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:53,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:53,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:34:53,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184921, now seen corresponding path program 1 times [2021-10-28 08:34:53,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:34:53,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861792687] [2021-10-28 08:34:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:53,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:34:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:34:53,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:34:53,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:34:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:53,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:34:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:53,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:34:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:53,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:34:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:53,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:34:53,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861792687] [2021-10-28 08:34:53,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861792687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:53,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:53,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 08:34:53,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933924386] [2021-10-28 08:34:53,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:34:53,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:34:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:34:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:34:53,952 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:54,614 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-28 08:34:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:34:54,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 08:34:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:54,617 INFO L225 Difference]: With dead ends: 119 [2021-10-28 08:34:54,617 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 08:34:54,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:34:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 08:34:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2021-10-28 08:34:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 97 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-10-28 08:34:54,627 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 10 [2021-10-28 08:34:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:54,628 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-10-28 08:34:54,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-10-28 08:34:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:34:54,629 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:54,629 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:54,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:54,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:34:54,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159409, now seen corresponding path program 1 times [2021-10-28 08:34:54,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:34:54,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419535822] [2021-10-28 08:34:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:54,842 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:34:54,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:34:54,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:34:54,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:34:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:55,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:34:55,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:55,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:34:55,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 08:34:55,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 08:34:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:55,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:34:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:55,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:34:55,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419535822] [2021-10-28 08:34:55,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419535822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:55,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:55,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 08:34:55,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002961217] [2021-10-28 08:34:55,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:34:55,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:34:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:34:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:34:55,320 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:55,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:55,979 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2021-10-28 08:34:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:34:55,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 08:34:55,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:55,981 INFO L225 Difference]: With dead ends: 140 [2021-10-28 08:34:55,981 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 08:34:55,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:34:55,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 08:34:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 103. [2021-10-28 08:34:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 99 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2021-10-28 08:34:55,990 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2021-10-28 08:34:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:55,991 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2021-10-28 08:34:55,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2021-10-28 08:34:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:34:55,992 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:55,992 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:56,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:56,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:34:56,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:56,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159408, now seen corresponding path program 1 times [2021-10-28 08:34:56,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:34:56,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648909840] [2021-10-28 08:34:56,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:56,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:34:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:34:56,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:34:56,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:34:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:56,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:34:56,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:56,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:34:56,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:34:56,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 08:34:56,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-28 08:34:56,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-28 08:34:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:56,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:34:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:57,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:34:57,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648909840] [2021-10-28 08:34:57,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648909840] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:57,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:57,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 08:34:57,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821288085] [2021-10-28 08:34:57,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:34:57,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:34:57,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:34:57,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:34:57,097 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:58,710 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-10-28 08:34:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:34:58,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 08:34:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:58,721 INFO L225 Difference]: With dead ends: 145 [2021-10-28 08:34:58,721 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 08:34:58,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:34:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 08:34:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2021-10-28 08:34:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 87 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-10-28 08:34:58,729 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 17 [2021-10-28 08:34:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:58,731 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-10-28 08:34:58,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:34:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-10-28 08:34:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:34:58,733 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:58,733 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:58,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:58,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:34:58,945 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:34:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2002045966, now seen corresponding path program 1 times [2021-10-28 08:34:58,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:34:58,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709744207] [2021-10-28 08:34:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:58,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:34:58,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:34:58,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:34:58,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:34:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:34:59,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:59,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 08:34:59,354 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-28 08:34:59,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-28 08:34:59,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 08:34:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:59,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:34:59,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 140 [2021-10-28 08:34:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:59,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:34:59,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709744207] [2021-10-28 08:34:59,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709744207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:59,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:59,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 08:34:59,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991665761] [2021-10-28 08:34:59,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 08:34:59,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:34:59,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 08:34:59,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:34:59,646 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:00,360 INFO L93 Difference]: Finished difference Result 192 states and 204 transitions. [2021-10-28 08:35:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:35:00,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 08:35:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:00,362 INFO L225 Difference]: With dead ends: 192 [2021-10-28 08:35:00,362 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 08:35:00,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:35:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 08:35:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 98. [2021-10-28 08:35:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 94 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-10-28 08:35:00,381 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2021-10-28 08:35:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:00,381 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-10-28 08:35:00,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-10-28 08:35:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:35:00,382 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:00,382 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:00,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:00,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:00,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:35:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494057, now seen corresponding path program 1 times [2021-10-28 08:35:00,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:00,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423549687] [2021-10-28 08:35:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:00,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:00,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:00,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 08:35:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:00,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:35:00,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:00,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:35:00,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 08:35:00,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:35:00,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-28 08:35:00,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-28 08:35:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:01,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:01,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:01,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423549687] [2021-10-28 08:35:01,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423549687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:01,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:01,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 08:35:01,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142688970] [2021-10-28 08:35:01,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:35:01,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:01,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:35:01,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:35:01,340 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:02,914 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-10-28 08:35:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:35:02,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 08:35:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:02,917 INFO L225 Difference]: With dead ends: 124 [2021-10-28 08:35:02,917 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 08:35:02,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:35:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 08:35:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2021-10-28 08:35:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 84 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-10-28 08:35:02,922 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2021-10-28 08:35:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:02,923 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-10-28 08:35:02,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-10-28 08:35:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:35:02,924 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:02,924 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:02,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:03,139 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:35:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:03,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494058, now seen corresponding path program 1 times [2021-10-28 08:35:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:03,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683444846] [2021-10-28 08:35:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:03,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:03,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:03,141 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:03,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 08:35:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:03,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:35:03,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:03,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:35:03,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 08:35:03,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 08:35:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:03,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:03,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:03,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683444846] [2021-10-28 08:35:03,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683444846] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:03,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:03,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 08:35:03,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891864747] [2021-10-28 08:35:03,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:35:03,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:35:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:35:03,503 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:03,940 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-10-28 08:35:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:35:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 08:35:03,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:03,942 INFO L225 Difference]: With dead ends: 113 [2021-10-28 08:35:03,942 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 08:35:03,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:35:03,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 08:35:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2021-10-28 08:35:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 79 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-10-28 08:35:03,946 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 18 [2021-10-28 08:35:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:03,947 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-10-28 08:35:03,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:35:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-10-28 08:35:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:35:03,948 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:03,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:03,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:04,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:04,160 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 08:35:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 131545524, now seen corresponding path program 1 times [2021-10-28 08:35:04,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:04,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55330733] [2021-10-28 08:35:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:04,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:04,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:04,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:04,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 08:35:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:04,352 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:04,408 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 08:35:04,408 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:35:04,409 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:35:04,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:35:04,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:35:04,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:35:04,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:35:04,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:35:04,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:35:04,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 08:35:04,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 08:35:04,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 08:35:04,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 08:35:04,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 08:35:04,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 08:35:04,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 08:35:04,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 08:35:04,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 08:35:04,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 08:35:04,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 08:35:04,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 08:35:04,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 08:35:04,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 08:35:04,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 08:35:04,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 08:35:04,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 08:35:04,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 08:35:04,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 08:35:04,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 08:35:04,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 08:35:04,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 08:35:04,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 08:35:04,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 08:35:04,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:35:04,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:35:04,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:35:04,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:35:04,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:35:04,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:35:04,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:35:04,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:04,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:04,632 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:04,636 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:35:04,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:35:04 BoogieIcfgContainer [2021-10-28 08:35:04,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:35:04,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:35:04,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:35:04,730 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:35:04,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:52" (3/4) ... [2021-10-28 08:35:04,735 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:35:04,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:35:04,737 INFO L168 Benchmark]: Toolchain (without parser) took 14659.91 ms. Allocated memory was 56.6 MB in the beginning and 90.2 MB in the end (delta: 33.6 MB). Free memory was 32.6 MB in the beginning and 43.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:04,738 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory is still 36.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:04,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 966.63 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 32.4 MB in the beginning and 46.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:04,744 INFO L168 Benchmark]: Boogie Preprocessor took 94.21 ms. Allocated memory is still 71.3 MB. Free memory was 46.0 MB in the beginning and 42.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:04,744 INFO L168 Benchmark]: RCFGBuilder took 939.21 ms. Allocated memory is still 71.3 MB. Free memory was 42.8 MB in the beginning and 49.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:04,745 INFO L168 Benchmark]: TraceAbstraction took 12622.30 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 48.7 MB in the beginning and 43.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:04,746 INFO L168 Benchmark]: Witness Printer took 21.48 ms. Allocated memory is still 90.2 MB. Free memory was 43.9 MB in the beginning and 43.4 MB in the end (delta: 590.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:04,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory is still 36.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 966.63 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 32.4 MB in the beginning and 46.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.21 ms. Allocated memory is still 71.3 MB. Free memory was 46.0 MB in the beginning and 42.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 939.21 ms. Allocated memory is still 71.3 MB. Free memory was 42.8 MB in the beginning and 49.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12622.30 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 48.7 MB in the beginning and 43.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * Witness Printer took 21.48 ms. Allocated memory is still 90.2 MB. Free memory was 43.9 MB in the beginning and 43.4 MB in the end (delta: 590.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={1:0}, i=0, p={1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, i=0, p={1:0}, y=0] [L555] p->n = 0 VAL [a={1:0}, i=0, p={1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={1:0}, i=0, p={1:0}, y=0] [L559] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={1:0}, i=0, p={1:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 12.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 406 SDtfs, 1052 SDslu, 1045 SDs, 0 SdLazy, 1679 SolverSat, 191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 289 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 202 ConstructedInterpolants, 1 QuantifiedInterpolants, 1010 SizeOfPredicates, 31 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:35:04,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cca31ba-3209-4c31-8ccf-ad1e587c75c0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...