./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:14:03,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:14:03,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:14:03,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:14:03,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:14:03,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:14:03,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:14:03,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:14:03,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:14:03,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:14:03,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:14:03,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:14:03,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:14:03,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:14:03,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:14:03,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:14:03,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:14:03,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:14:03,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:14:03,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:14:03,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:14:03,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:14:03,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:14:03,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:14:03,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:14:03,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:14:03,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:14:03,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:14:03,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:14:03,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:14:03,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:14:03,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:14:03,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:14:03,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:14:03,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:14:03,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:14:03,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:14:03,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:14:03,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:14:03,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:14:03,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:14:03,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 15:14:03,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:14:03,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:14:03,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:14:03,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:14:03,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:14:03,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:14:03,267 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:14:03,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:14:03,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:14:03,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:14:03,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:14:03,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:14:03,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:14:03,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:14:03,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:14:03,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:14:03,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:14:03,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:14:03,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:14:03,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:14:03,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:14:03,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:14:03,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:14:03,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:14:03,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:14:03,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:14:03,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:14:03,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:14:03,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:14:03,273 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_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b [2021-11-22 15:14:03,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:14:03,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:14:03,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:14:03,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:14:03,538 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:14:03,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-22 15:14:03,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/data/cfc9d1e9e/04aaf56ecb9042a6bc6fa08a13bed427/FLAG5d61ee724 [2021-11-22 15:14:04,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:14:04,568 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-22 15:14:04,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/data/cfc9d1e9e/04aaf56ecb9042a6bc6fa08a13bed427/FLAG5d61ee724 [2021-11-22 15:14:04,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/data/cfc9d1e9e/04aaf56ecb9042a6bc6fa08a13bed427 [2021-11-22 15:14:04,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:14:04,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:14:04,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:14:04,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:14:04,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:14:04,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:14:04" (1/1) ... [2021-11-22 15:14:04,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3114aeb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:04, skipping insertion in model container [2021-11-22 15:14:04,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:14:04" (1/1) ... [2021-11-22 15:14:04,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:14:05,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:14:05,915 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-11-22 15:14:05,916 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-11-22 15:14:06,496 WARN L230 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_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-11-22 15:14:08,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:14:08,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:14:08,335 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-11-22 15:14:08,335 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-11-22 15:14:08,352 WARN L230 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_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-11-22 15:14:09,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:14:09,260 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:14:09,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09 WrapperNode [2021-11-22 15:14:09,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:14:09,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:14:09,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:14:09,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:14:09,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:09,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:09,975 INFO L137 Inliner]: procedures = 324, calls = 3021, calls flagged for inlining = 638, calls inlined = 1516, statements flattened = 18910 [2021-11-22 15:14:09,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:14:09,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:14:09,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:14:09,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:14:09,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:09,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:10,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:10,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:10,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:10,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:10,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:10,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:14:10,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:14:10,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:14:10,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:14:10,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (1/1) ... [2021-11-22 15:14:11,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:14:11,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:11,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:14:11,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:14:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-22 15:14:11,090 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-22 15:14:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-22 15:14:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 15:14:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 15:14:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure hso_kick_transmit [2021-11-22 15:14:11,091 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_kick_transmit [2021-11-22 15:14:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:14:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-22 15:14:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:14:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-22 15:14:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:14:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 15:14:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 15:14:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure hso_resume [2021-11-22 15:14:11,093 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_resume [2021-11-22 15:14:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 15:14:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:14:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:14:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-22 15:14:11,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-22 15:14:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:14:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_interface [2021-11-22 15:14:11,095 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_interface [2021-11-22 15:14:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:14:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:14:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 15:14:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure hso_disconnect [2021-11-22 15:14:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_disconnect [2021-11-22 15:14:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 15:14:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 15:14:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-22 15:14:11,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-22 15:14:11,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:14:11,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:14:11,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:14:12,464 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:14:12,466 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:14:38,975 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:14:39,011 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:14:39,011 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:14:39,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:14:39 BoogieIcfgContainer [2021-11-22 15:14:39,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:14:39,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:14:39,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:14:39,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:14:39,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:14:04" (1/3) ... [2021-11-22 15:14:39,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4f5f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:14:39, skipping insertion in model container [2021-11-22 15:14:39,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:14:09" (2/3) ... [2021-11-22 15:14:39,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4f5f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:14:39, skipping insertion in model container [2021-11-22 15:14:39,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:14:39" (3/3) ... [2021-11-22 15:14:39,027 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-22 15:14:39,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:14:39,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-22 15:14:39,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:14:39,112 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:14:39,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-22 15:14:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 3525 states, 3442 states have (on average 1.4093550261475887) internal successors, (4851), 3500 states have internal predecessors, (4851), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-22 15:14:39,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 15:14:39,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:39,207 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:39,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1463063272, now seen corresponding path program 1 times [2021-11-22 15:14:39,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:39,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019532909] [2021-11-22 15:14:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:39,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:39,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:39,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019532909] [2021-11-22 15:14:39,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019532909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:39,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:39,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:14:39,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729931139] [2021-11-22 15:14:39,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:39,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:39,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:39,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:39,946 INFO L87 Difference]: Start difference. First operand has 3525 states, 3442 states have (on average 1.4093550261475887) internal successors, (4851), 3500 states have internal predecessors, (4851), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:40,427 INFO L93 Difference]: Finished difference Result 9382 states and 13112 transitions. [2021-11-22 15:14:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-22 15:14:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:40,498 INFO L225 Difference]: With dead ends: 9382 [2021-11-22 15:14:40,498 INFO L226 Difference]: Without dead ends: 5827 [2021-11-22 15:14:40,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:40,525 INFO L933 BasicCegarLoop]: 4708 mSDtfsCounter, 3426 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 9268 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:40,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3426 Valid, 9268 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:14:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2021-11-22 15:14:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5778. [2021-11-22 15:14:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5778 states, 5675 states have (on average 1.3876651982378854) internal successors, (7875), 5734 states have internal predecessors, (7875), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-22 15:14:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 7937 transitions. [2021-11-22 15:14:40,869 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 7937 transitions. Word has length 39 [2021-11-22 15:14:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:40,870 INFO L470 AbstractCegarLoop]: Abstraction has 5778 states and 7937 transitions. [2021-11-22 15:14:40,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 7937 transitions. [2021-11-22 15:14:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 15:14:40,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:40,882 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:40,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:14:40,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:40,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:40,886 INFO L85 PathProgramCache]: Analyzing trace with hash -770455383, now seen corresponding path program 1 times [2021-11-22 15:14:40,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:40,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92028011] [2021-11-22 15:14:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:40,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:41,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:41,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92028011] [2021-11-22 15:14:41,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92028011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:41,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:41,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:14:41,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718415142] [2021-11-22 15:14:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:41,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:41,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:41,259 INFO L87 Difference]: Start difference. First operand 5778 states and 7937 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:41,795 INFO L93 Difference]: Finished difference Result 16650 states and 22970 transitions. [2021-11-22 15:14:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:41,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-22 15:14:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:41,869 INFO L225 Difference]: With dead ends: 16650 [2021-11-22 15:14:41,869 INFO L226 Difference]: Without dead ends: 10969 [2021-11-22 15:14:41,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:41,887 INFO L933 BasicCegarLoop]: 4693 mSDtfsCounter, 4207 mSDsluCounter, 4515 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 9208 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:41,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4207 Valid, 9208 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:14:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10969 states. [2021-11-22 15:14:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10969 to 10871. [2021-11-22 15:14:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10871 states, 10721 states have (on average 1.3939930976588004) internal successors, (14945), 10784 states have internal predecessors, (14945), 62 states have call successors, (62), 32 states have call predecessors, (62), 32 states have return successors, (79), 62 states have call predecessors, (79), 62 states have call successors, (79) [2021-11-22 15:14:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10871 states to 10871 states and 15086 transitions. [2021-11-22 15:14:42,283 INFO L78 Accepts]: Start accepts. Automaton has 10871 states and 15086 transitions. Word has length 50 [2021-11-22 15:14:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:42,283 INFO L470 AbstractCegarLoop]: Abstraction has 10871 states and 15086 transitions. [2021-11-22 15:14:42,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 10871 states and 15086 transitions. [2021-11-22 15:14:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 15:14:42,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:42,289 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:42,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:14:42,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1414507719, now seen corresponding path program 1 times [2021-11-22 15:14:42,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:42,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620205915] [2021-11-22 15:14:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:42,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:42,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:42,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620205915] [2021-11-22 15:14:42,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620205915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:42,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:42,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:14:42,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237811045] [2021-11-22 15:14:42,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:42,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:42,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:42,837 INFO L87 Difference]: Start difference. First operand 10871 states and 15086 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:43,574 INFO L93 Difference]: Finished difference Result 26773 states and 37076 transitions. [2021-11-22 15:14:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:43,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-22 15:14:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:43,689 INFO L225 Difference]: With dead ends: 26773 [2021-11-22 15:14:43,689 INFO L226 Difference]: Without dead ends: 15999 [2021-11-22 15:14:43,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:43,727 INFO L933 BasicCegarLoop]: 6347 mSDtfsCounter, 3632 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 10842 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:43,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 10842 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:14:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15999 states. [2021-11-22 15:14:44,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15999 to 15893. [2021-11-22 15:14:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15893 states, 15697 states have (on average 1.3909027202650188) internal successors, (21833), 15764 states have internal predecessors, (21833), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (117), 92 states have call predecessors, (117), 92 states have call successors, (117) [2021-11-22 15:14:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15893 states to 15893 states and 22042 transitions. [2021-11-22 15:14:44,345 INFO L78 Accepts]: Start accepts. Automaton has 15893 states and 22042 transitions. Word has length 71 [2021-11-22 15:14:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:44,347 INFO L470 AbstractCegarLoop]: Abstraction has 15893 states and 22042 transitions. [2021-11-22 15:14:44,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 15893 states and 22042 transitions. [2021-11-22 15:14:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 15:14:44,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:44,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:44,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:14:44,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1365731098, now seen corresponding path program 1 times [2021-11-22 15:14:44,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716234718] [2021-11-22 15:14:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:44,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:44,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:44,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716234718] [2021-11-22 15:14:44,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716234718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:44,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:44,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:14:44,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832434512] [2021-11-22 15:14:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:44,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:44,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:44,698 INFO L87 Difference]: Start difference. First operand 15893 states and 22042 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:45,329 INFO L93 Difference]: Finished difference Result 31705 states and 43999 transitions. [2021-11-22 15:14:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 15:14:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:45,392 INFO L225 Difference]: With dead ends: 31705 [2021-11-22 15:14:45,392 INFO L226 Difference]: Without dead ends: 15909 [2021-11-22 15:14:45,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:45,430 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 1 mSDsluCounter, 4659 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9321 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:45,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9321 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15909 states. [2021-11-22 15:14:45,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15909 to 15901. [2021-11-22 15:14:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15901 states, 15705 states have (on average 1.3907035975803883) internal successors, (21841), 15772 states have internal predecessors, (21841), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (117), 92 states have call predecessors, (117), 92 states have call successors, (117) [2021-11-22 15:14:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 22050 transitions. [2021-11-22 15:14:46,035 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 22050 transitions. Word has length 75 [2021-11-22 15:14:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:46,037 INFO L470 AbstractCegarLoop]: Abstraction has 15901 states and 22050 transitions. [2021-11-22 15:14:46,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 22050 transitions. [2021-11-22 15:14:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 15:14:46,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:46,041 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:46,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:14:46,042 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash 450133598, now seen corresponding path program 1 times [2021-11-22 15:14:46,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:46,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162930225] [2021-11-22 15:14:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:46,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:46,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:46,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162930225] [2021-11-22 15:14:46,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162930225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888500720] [2021-11-22 15:14:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:46,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:46,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:46,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:14:46,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:14:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:48,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 4245 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:14:48,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:14:48,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:14:48,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888500720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:48,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:14:48,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-22 15:14:48,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074023495] [2021-11-22 15:14:48,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:48,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:48,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:48,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:48,344 INFO L87 Difference]: Start difference. First operand 15901 states and 22050 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:48,872 INFO L93 Difference]: Finished difference Result 31705 states and 43991 transitions. [2021-11-22 15:14:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:48,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 15:14:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:48,931 INFO L225 Difference]: With dead ends: 31705 [2021-11-22 15:14:48,931 INFO L226 Difference]: Without dead ends: 15901 [2021-11-22 15:14:48,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:48,970 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 4614 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:48,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4614 Valid, 4662 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2021-11-22 15:14:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 15901. [2021-11-22 15:14:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15901 states, 15705 states have (on average 1.390194205666985) internal successors, (21833), 15772 states have internal predecessors, (21833), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (117), 92 states have call predecessors, (117), 92 states have call successors, (117) [2021-11-22 15:14:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 22042 transitions. [2021-11-22 15:14:49,476 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 22042 transitions. Word has length 77 [2021-11-22 15:14:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:49,477 INFO L470 AbstractCegarLoop]: Abstraction has 15901 states and 22042 transitions. [2021-11-22 15:14:49,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 22042 transitions. [2021-11-22 15:14:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 15:14:49,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:49,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:49,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:14:49,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:49,705 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:49,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash -59339492, now seen corresponding path program 1 times [2021-11-22 15:14:49,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:49,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808535776] [2021-11-22 15:14:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:49,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:50,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:50,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808535776] [2021-11-22 15:14:50,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808535776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:50,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747003945] [2021-11-22 15:14:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:50,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:50,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:50,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:14:50,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:14:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:51,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 4243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:14:51,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:14:51,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:14:51,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747003945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:51,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:14:51,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 15:14:51,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106017708] [2021-11-22 15:14:51,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:51,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:51,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:51,531 INFO L87 Difference]: Start difference. First operand 15901 states and 22042 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:52,198 INFO L93 Difference]: Finished difference Result 31709 states and 43979 transitions. [2021-11-22 15:14:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 15:14:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:52,257 INFO L225 Difference]: With dead ends: 31709 [2021-11-22 15:14:52,258 INFO L226 Difference]: Without dead ends: 15897 [2021-11-22 15:14:52,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:52,284 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 0 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9321 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:52,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9321 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:14:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15897 states. [2021-11-22 15:14:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15897 to 15747. [2021-11-22 15:14:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 15551 states have (on average 1.3920005144363707) internal successors, (21647), 15618 states have internal predecessors, (21647), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (117), 92 states have call predecessors, (117), 92 states have call successors, (117) [2021-11-22 15:14:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 21856 transitions. [2021-11-22 15:14:52,765 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 21856 transitions. Word has length 77 [2021-11-22 15:14:52,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:52,765 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 21856 transitions. [2021-11-22 15:14:52,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 21856 transitions. [2021-11-22 15:14:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 15:14:52,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:52,771 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:52,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:14:52,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:52,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash 884728396, now seen corresponding path program 1 times [2021-11-22 15:14:52,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:52,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861560731] [2021-11-22 15:14:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:52,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:53,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:53,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861560731] [2021-11-22 15:14:53,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861560731] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:53,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971568714] [2021-11-22 15:14:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:53,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:53,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:53,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:14:53,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:14:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:54,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 4292 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:14:54,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 15:14:55,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:14:55,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971568714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:55,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:14:55,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-22 15:14:55,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338283745] [2021-11-22 15:14:55,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:55,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:55,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:55,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:55,024 INFO L87 Difference]: Start difference. First operand 15747 states and 21856 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:55,683 INFO L93 Difference]: Finished difference Result 16625 states and 23017 transitions. [2021-11-22 15:14:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-22 15:14:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:55,742 INFO L225 Difference]: With dead ends: 16625 [2021-11-22 15:14:55,742 INFO L226 Difference]: Without dead ends: 16533 [2021-11-22 15:14:55,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:55,753 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 3349 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 5777 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:55,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3349 Valid, 5777 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:14:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16533 states. [2021-11-22 15:14:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16533 to 16401. [2021-11-22 15:14:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16401 states, 16242 states have (on average 1.3807412880187169) internal successors, (22426), 16268 states have internal predecessors, (22426), 92 states have call successors, (92), 52 states have call predecessors, (92), 52 states have return successors, (121), 92 states have call predecessors, (121), 92 states have call successors, (121) [2021-11-22 15:14:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16401 states to 16401 states and 22639 transitions. [2021-11-22 15:14:56,349 INFO L78 Accepts]: Start accepts. Automaton has 16401 states and 22639 transitions. Word has length 82 [2021-11-22 15:14:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:56,351 INFO L470 AbstractCegarLoop]: Abstraction has 16401 states and 22639 transitions. [2021-11-22 15:14:56,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 16401 states and 22639 transitions. [2021-11-22 15:14:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 15:14:56,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:56,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:56,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 15:14:56,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:56,584 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:14:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:56,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2070984558, now seen corresponding path program 1 times [2021-11-22 15:14:56,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:56,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298362378] [2021-11-22 15:14:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:56,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:56,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298362378] [2021-11-22 15:14:56,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298362378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149953683] [2021-11-22 15:14:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:56,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:56,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:56,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:14:56,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:14:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:58,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 4317 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:14:58,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:14:58,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:14:58,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149953683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:58,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:14:58,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 15:14:58,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964409969] [2021-11-22 15:14:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:58,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:58,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:58,426 INFO L87 Difference]: Start difference. First operand 16401 states and 22639 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:59,243 INFO L93 Difference]: Finished difference Result 41145 states and 56843 transitions. [2021-11-22 15:14:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:59,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-22 15:14:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:59,327 INFO L225 Difference]: With dead ends: 41145 [2021-11-22 15:14:59,327 INFO L226 Difference]: Without dead ends: 24841 [2021-11-22 15:14:59,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:59,369 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 4147 mSDsluCounter, 3862 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 8427 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:59,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 8427 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:14:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24841 states. [2021-11-22 15:15:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24841 to 24661. [2021-11-22 15:15:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24661 states, 24418 states have (on average 1.3824228028503562) internal successors, (33756), 24452 states have internal predecessors, (33756), 142 states have call successors, (142), 86 states have call predecessors, (142), 86 states have return successors, (186), 142 states have call predecessors, (186), 142 states have call successors, (186) [2021-11-22 15:15:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24661 states to 24661 states and 34084 transitions. [2021-11-22 15:15:00,459 INFO L78 Accepts]: Start accepts. Automaton has 24661 states and 34084 transitions. Word has length 101 [2021-11-22 15:15:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:00,460 INFO L470 AbstractCegarLoop]: Abstraction has 24661 states and 34084 transitions. [2021-11-22 15:15:00,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 24661 states and 34084 transitions. [2021-11-22 15:15:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:15:00,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:00,471 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:00,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:15:00,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:00,685 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash 296454502, now seen corresponding path program 1 times [2021-11-22 15:15:00,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:00,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74143017] [2021-11-22 15:15:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:00,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:00,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:00,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74143017] [2021-11-22 15:15:00,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74143017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:15:00,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579181215] [2021-11-22 15:15:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:00,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:00,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:15:00,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:15:00,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:15:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:02,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 4598 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:15:02,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:15:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:15:02,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:15:02,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579181215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:02,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:15:02,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 15:15:02,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720026231] [2021-11-22 15:15:02,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:02,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:02,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:02,599 INFO L87 Difference]: Start difference. First operand 24661 states and 34084 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:03,429 INFO L93 Difference]: Finished difference Result 60711 states and 84151 transitions. [2021-11-22 15:15:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-22 15:15:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:03,559 INFO L225 Difference]: With dead ends: 60711 [2021-11-22 15:15:03,559 INFO L226 Difference]: Without dead ends: 36147 [2021-11-22 15:15:03,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:03,612 INFO L933 BasicCegarLoop]: 5162 mSDtfsCounter, 4461 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 8534 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:03,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 8534 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:15:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36147 states. [2021-11-22 15:15:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36147 to 36097. [2021-11-22 15:15:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36097 states, 35740 states have (on average 1.3887520984890878) internal successors, (49634), 35786 states have internal predecessors, (49634), 208 states have call successors, (208), 134 states have call predecessors, (208), 134 states have return successors, (269), 208 states have call predecessors, (269), 208 states have call successors, (269) [2021-11-22 15:15:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36097 states to 36097 states and 50111 transitions. [2021-11-22 15:15:05,017 INFO L78 Accepts]: Start accepts. Automaton has 36097 states and 50111 transitions. Word has length 115 [2021-11-22 15:15:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:05,017 INFO L470 AbstractCegarLoop]: Abstraction has 36097 states and 50111 transitions. [2021-11-22 15:15:05,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:05,018 INFO L276 IsEmpty]: Start isEmpty. Operand 36097 states and 50111 transitions. [2021-11-22 15:15:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 15:15:05,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:05,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:05,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:15:05,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:05,249 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1742020041, now seen corresponding path program 1 times [2021-11-22 15:15:05,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:05,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349084914] [2021-11-22 15:15:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:05,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 15:15:05,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:05,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349084914] [2021-11-22 15:15:05,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349084914] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:15:05,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961939927] [2021-11-22 15:15:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:05,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:05,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:15:05,492 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:15:05,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:15:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:07,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 4669 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:15:07,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:15:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 15:15:07,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:15:07,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961939927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:07,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:15:07,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 15:15:07,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871276719] [2021-11-22 15:15:07,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:07,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:07,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:07,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:07,251 INFO L87 Difference]: Start difference. First operand 36097 states and 50111 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:09,004 INFO L93 Difference]: Finished difference Result 83583 states and 116205 transitions. [2021-11-22 15:15:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:09,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-22 15:15:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:09,118 INFO L225 Difference]: With dead ends: 83583 [2021-11-22 15:15:09,119 INFO L226 Difference]: Without dead ends: 47583 [2021-11-22 15:15:09,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:09,173 INFO L933 BasicCegarLoop]: 4758 mSDtfsCounter, 4550 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4550 SdHoareTripleChecker+Valid, 8056 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:09,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4550 Valid, 8056 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:15:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47583 states. [2021-11-22 15:15:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47583 to 47533. [2021-11-22 15:15:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47533 states, 47062 states have (on average 1.392291020356126) internal successors, (65524), 47120 states have internal predecessors, (65524), 274 states have call successors, (274), 182 states have call predecessors, (274), 182 states have return successors, (352), 274 states have call predecessors, (352), 274 states have call successors, (352) [2021-11-22 15:15:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47533 states to 47533 states and 66150 transitions. [2021-11-22 15:15:10,899 INFO L78 Accepts]: Start accepts. Automaton has 47533 states and 66150 transitions. Word has length 125 [2021-11-22 15:15:10,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:10,899 INFO L470 AbstractCegarLoop]: Abstraction has 47533 states and 66150 transitions. [2021-11-22 15:15:10,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:10,899 INFO L276 IsEmpty]: Start isEmpty. Operand 47533 states and 66150 transitions. [2021-11-22 15:15:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-22 15:15:10,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:10,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:10,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:15:11,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 15:15:11,157 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1769406948, now seen corresponding path program 1 times [2021-11-22 15:15:11,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:11,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915028378] [2021-11-22 15:15:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:11,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:15:11,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:11,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915028378] [2021-11-22 15:15:11,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915028378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:15:11,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820968470] [2021-11-22 15:15:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:11,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:15:11,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:15:11,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:15:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:13,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 4519 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:15:13,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:15:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 15:15:13,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:15:13,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820968470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:13,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:15:13,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 15:15:13,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246162791] [2021-11-22 15:15:13,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:13,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:13,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:13,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:13,521 INFO L87 Difference]: Start difference. First operand 47533 states and 66150 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:14,917 INFO L93 Difference]: Finished difference Result 94977 states and 132207 transitions. [2021-11-22 15:15:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:14,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-22 15:15:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:15,215 INFO L225 Difference]: With dead ends: 94977 [2021-11-22 15:15:15,215 INFO L226 Difference]: Without dead ends: 47541 [2021-11-22 15:15:15,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:15,267 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 0 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9153 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:15,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9153 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:15:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47541 states. [2021-11-22 15:15:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47541 to 47541. [2021-11-22 15:15:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47541 states, 47070 states have (on average 1.3922243467176545) internal successors, (65532), 47128 states have internal predecessors, (65532), 274 states have call successors, (274), 182 states have call predecessors, (274), 182 states have return successors, (352), 274 states have call predecessors, (352), 274 states have call successors, (352) [2021-11-22 15:15:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47541 states to 47541 states and 66158 transitions. [2021-11-22 15:15:17,427 INFO L78 Accepts]: Start accepts. Automaton has 47541 states and 66158 transitions. Word has length 133 [2021-11-22 15:15:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:17,428 INFO L470 AbstractCegarLoop]: Abstraction has 47541 states and 66158 transitions. [2021-11-22 15:15:17,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 47541 states and 66158 transitions. [2021-11-22 15:15:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-22 15:15:17,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:17,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:17,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:15:17,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 15:15:17,681 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2081659674, now seen corresponding path program 1 times [2021-11-22 15:15:17,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:17,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947055752] [2021-11-22 15:15:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:17,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:15:18,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947055752] [2021-11-22 15:15:18,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947055752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:15:18,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247925418] [2021-11-22 15:15:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:18,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:18,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:15:18,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:15:18,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:15:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:19,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 4522 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:15:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:15:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:15:19,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:15:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:15:20,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247925418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:15:20,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:15:20,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:15:20,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949406402] [2021-11-22 15:15:20,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:15:20,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:15:20,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:15:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:15:20,153 INFO L87 Difference]: Start difference. First operand 47541 states and 66158 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:21,718 INFO L93 Difference]: Finished difference Result 95033 states and 132279 transitions. [2021-11-22 15:15:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:15:21,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-22 15:15:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:21,819 INFO L225 Difference]: With dead ends: 95033 [2021-11-22 15:15:21,819 INFO L226 Difference]: Without dead ends: 47589 [2021-11-22 15:15:21,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:15:21,871 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 4 mSDsluCounter, 22875 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27453 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:21,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 27453 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47589 states. [2021-11-22 15:15:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47589 to 47589. [2021-11-22 15:15:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47589 states, 47118 states have (on average 1.391824780338724) internal successors, (65580), 47176 states have internal predecessors, (65580), 274 states have call successors, (274), 182 states have call predecessors, (274), 182 states have return successors, (352), 274 states have call predecessors, (352), 274 states have call successors, (352) [2021-11-22 15:15:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47589 states to 47589 states and 66206 transitions. [2021-11-22 15:15:23,578 INFO L78 Accepts]: Start accepts. Automaton has 47589 states and 66206 transitions. Word has length 133 [2021-11-22 15:15:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:23,578 INFO L470 AbstractCegarLoop]: Abstraction has 47589 states and 66206 transitions. [2021-11-22 15:15:23,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 47589 states and 66206 transitions. [2021-11-22 15:15:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-22 15:15:23,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:23,601 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:23,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:15:23,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:23,817 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1458679630, now seen corresponding path program 2 times [2021-11-22 15:15:23,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:23,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279456176] [2021-11-22 15:15:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:23,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-22 15:15:24,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:24,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279456176] [2021-11-22 15:15:24,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279456176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:24,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:24,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:15:24,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932102359] [2021-11-22 15:15:24,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:24,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:24,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:24,064 INFO L87 Difference]: Start difference. First operand 47589 states and 66206 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:25,496 INFO L93 Difference]: Finished difference Result 95097 states and 132319 transitions. [2021-11-22 15:15:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:15:25,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-22 15:15:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:25,618 INFO L225 Difference]: With dead ends: 95097 [2021-11-22 15:15:25,618 INFO L226 Difference]: Without dead ends: 47589 [2021-11-22 15:15:25,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:25,671 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 1 mSDsluCounter, 9151 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13730 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:25,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 13730 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:15:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47589 states. [2021-11-22 15:15:27,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47589 to 47589. [2021-11-22 15:15:27,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47589 states, 47118 states have (on average 1.3916549938452396) internal successors, (65572), 47176 states have internal predecessors, (65572), 274 states have call successors, (274), 182 states have call predecessors, (274), 182 states have return successors, (352), 274 states have call predecessors, (352), 274 states have call successors, (352) [2021-11-22 15:15:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47589 states to 47589 states and 66198 transitions. [2021-11-22 15:15:27,310 INFO L78 Accepts]: Start accepts. Automaton has 47589 states and 66198 transitions. Word has length 139 [2021-11-22 15:15:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:27,310 INFO L470 AbstractCegarLoop]: Abstraction has 47589 states and 66198 transitions. [2021-11-22 15:15:27,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 47589 states and 66198 transitions. [2021-11-22 15:15:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 15:15:27,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:27,332 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:27,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:15:27,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ##fun~$Pointer$~TO~VOIDErr5ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:27,333 INFO L85 PathProgramCache]: Analyzing trace with hash -787348091, now seen corresponding path program 1 times [2021-11-22 15:15:27,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:27,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241006493] [2021-11-22 15:15:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:27,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-22 15:15:27,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241006493] [2021-11-22 15:15:27,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241006493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:27,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:27,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:15:27,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066917241] [2021-11-22 15:15:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:27,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:27,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:27,636 INFO L87 Difference]: Start difference. First operand 47589 states and 66198 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:29,496 INFO L93 Difference]: Finished difference Result 100983 states and 140514 transitions. [2021-11-22 15:15:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:15:29,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-22 15:15:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:29,666 INFO L225 Difference]: With dead ends: 100983 [2021-11-22 15:15:29,667 INFO L226 Difference]: Without dead ends: 53491 [2021-11-22 15:15:29,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:29,746 INFO L933 BasicCegarLoop]: 4904 mSDtfsCounter, 375 mSDsluCounter, 9403 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 14307 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:29,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 14307 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:15:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53491 states. [2021-11-22 15:15:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53491 to 49382. [2021-11-22 15:15:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49382 states, 48900 states have (on average 1.390879345603272) internal successors, (68014), 48969 states have internal predecessors, (68014), 274 states have call successors, (274), 182 states have call predecessors, (274), 193 states have return successors, (363), 274 states have call predecessors, (363), 274 states have call successors, (363) [2021-11-22 15:15:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49382 states to 49382 states and 68651 transitions. [2021-11-22 15:15:31,267 INFO L78 Accepts]: Start accepts. Automaton has 49382 states and 68651 transitions. Word has length 143 [2021-11-22 15:15:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:31,268 INFO L470 AbstractCegarLoop]: Abstraction has 49382 states and 68651 transitions. [2021-11-22 15:15:31,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 49382 states and 68651 transitions. [2021-11-22 15:15:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 15:15:31,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:31,287 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:31,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:15:31,288 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ##fun~$Pointer$~TO~intErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1424472001, now seen corresponding path program 1 times [2021-11-22 15:15:31,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:31,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175325549] [2021-11-22 15:15:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:31,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-22 15:15:31,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:31,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175325549] [2021-11-22 15:15:31,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175325549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:31,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:31,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:15:31,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129264942] [2021-11-22 15:15:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:31,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:31,592 INFO L87 Difference]: Start difference. First operand 49382 states and 68651 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:34,071 INFO L93 Difference]: Finished difference Result 123696 states and 171725 transitions. [2021-11-22 15:15:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:15:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-22 15:15:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:34,273 INFO L225 Difference]: With dead ends: 123696 [2021-11-22 15:15:34,273 INFO L226 Difference]: Without dead ends: 74411 [2021-11-22 15:15:34,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:34,351 INFO L933 BasicCegarLoop]: 8947 mSDtfsCounter, 5726 mSDsluCounter, 12162 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5726 SdHoareTripleChecker+Valid, 21109 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:34,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5726 Valid, 21109 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:15:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74411 states. [2021-11-22 15:15:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74411 to 49394. [2021-11-22 15:15:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49394 states, 48912 states have (on average 1.3907834478246648) internal successors, (68026), 48981 states have internal predecessors, (68026), 274 states have call successors, (274), 182 states have call predecessors, (274), 193 states have return successors, (363), 274 states have call predecessors, (363), 274 states have call successors, (363) [2021-11-22 15:15:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49394 states to 49394 states and 68663 transitions. [2021-11-22 15:15:36,203 INFO L78 Accepts]: Start accepts. Automaton has 49394 states and 68663 transitions. Word has length 144 [2021-11-22 15:15:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:36,204 INFO L470 AbstractCegarLoop]: Abstraction has 49394 states and 68663 transitions. [2021-11-22 15:15:36,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 49394 states and 68663 transitions. [2021-11-22 15:15:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-22 15:15:36,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:36,225 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:36,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:15:36,225 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ##fun~$Pointer$~TO~VOIDErr4ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1140152347, now seen corresponding path program 1 times [2021-11-22 15:15:36,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:36,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226081391] [2021-11-22 15:15:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-22 15:15:36,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:36,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226081391] [2021-11-22 15:15:36,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226081391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:36,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:36,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:36,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555209600] [2021-11-22 15:15:36,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:36,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:36,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:36,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:36,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:36,734 INFO L87 Difference]: Start difference. First operand 49394 states and 68663 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:38,124 INFO L93 Difference]: Finished difference Result 98790 states and 137642 transitions. [2021-11-22 15:15:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:38,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-22 15:15:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:38,262 INFO L225 Difference]: With dead ends: 98790 [2021-11-22 15:15:38,263 INFO L226 Difference]: Without dead ends: 49493 [2021-11-22 15:15:38,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:38,347 INFO L933 BasicCegarLoop]: 4576 mSDtfsCounter, 0 mSDsluCounter, 4558 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9134 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:38,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9134 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49493 states. [2021-11-22 15:15:40,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49493 to 49493. [2021-11-22 15:15:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49493 states, 49011 states have (on average 1.389994082960968) internal successors, (68125), 49080 states have internal predecessors, (68125), 274 states have call successors, (274), 182 states have call predecessors, (274), 193 states have return successors, (363), 274 states have call predecessors, (363), 274 states have call successors, (363) [2021-11-22 15:15:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49493 states to 49493 states and 68762 transitions. [2021-11-22 15:15:40,189 INFO L78 Accepts]: Start accepts. Automaton has 49493 states and 68762 transitions. Word has length 147 [2021-11-22 15:15:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:40,190 INFO L470 AbstractCegarLoop]: Abstraction has 49493 states and 68762 transitions. [2021-11-22 15:15:40,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 49493 states and 68762 transitions. [2021-11-22 15:15:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 15:15:40,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:40,204 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:40,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:15:40,205 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ##fun~$Pointer$~TO~VOIDErr5ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash 643403171, now seen corresponding path program 1 times [2021-11-22 15:15:40,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:40,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442951748] [2021-11-22 15:15:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:40,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-22 15:15:40,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:40,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442951748] [2021-11-22 15:15:40,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442951748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:40,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:40,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:40,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449738548] [2021-11-22 15:15:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:40,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:40,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:40,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:40,516 INFO L87 Difference]: Start difference. First operand 49493 states and 68762 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:42,735 INFO L93 Difference]: Finished difference Result 103081 states and 143478 transitions. [2021-11-22 15:15:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:42,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-22 15:15:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:43,109 INFO L225 Difference]: With dead ends: 103081 [2021-11-22 15:15:43,109 INFO L226 Difference]: Without dead ends: 53685 [2021-11-22 15:15:43,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:43,166 INFO L933 BasicCegarLoop]: 4811 mSDtfsCounter, 407 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 9205 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:43,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 9205 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:15:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53685 states. [2021-11-22 15:15:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53685 to 49922. [2021-11-22 15:15:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49922 states, 49440 states have (on average 1.3872775080906148) internal successors, (68587), 49509 states have internal predecessors, (68587), 274 states have call successors, (274), 182 states have call predecessors, (274), 193 states have return successors, (363), 274 states have call predecessors, (363), 274 states have call successors, (363) [2021-11-22 15:15:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49922 states to 49922 states and 69224 transitions. [2021-11-22 15:15:44,710 INFO L78 Accepts]: Start accepts. Automaton has 49922 states and 69224 transitions. Word has length 149 [2021-11-22 15:15:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:44,711 INFO L470 AbstractCegarLoop]: Abstraction has 49922 states and 69224 transitions. [2021-11-22 15:15:44,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 49922 states and 69224 transitions. [2021-11-22 15:15:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 15:15:44,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:44,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:44,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:15:44,722 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ##fun~$Pointer$~TO~VOIDErr4ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:15:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash 732721398, now seen corresponding path program 1 times [2021-11-22 15:15:44,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:44,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651346882] [2021-11-22 15:15:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:44,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:45,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:45,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651346882] [2021-11-22 15:15:45,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651346882] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:15:45,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555376805] [2021-11-22 15:15:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:45,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:15:45,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:15:45,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:15:45,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a40ca17-0a8a-4fb7-a111-c3606a0b2b41/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:15:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:46,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 4856 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:15:46,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:15:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:46,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:15:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:47,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555376805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:15:47,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:15:47,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-22 15:15:47,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185633596] [2021-11-22 15:15:47,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:15:47,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:15:47,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:47,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:15:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:15:47,333 INFO L87 Difference]: Start difference. First operand 49922 states and 69224 transitions. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)